Department of Molecular Compound Physics

Head of department prof., habil. dr. Vidmantas Gulbinas
phone +370 5 261 9656
The investigations carried out in the Department of Molecular Compounds Physics are focused on photoinduced electronic processes and their characteristics in various organic, inorganic, hybrid and also biological systems. The examples are organic and perovskite solar cells and other devices, photosynthetic protein complexes, fluorescent sensors. Our goals are to understand both sequence of the photoinduced processes and the effect the structure of the systems has on these processes. Additionally, we strive to control processes in new organic optoelectronic devices and biological sensors and to create new methods of characterization for organic systems.

We employ a number of different ultrafast spectroscopy methods and combine them with time-resolved electric methods for achieving our goals. Together, these techniques allow us to determine the spectroscopic and electric properties of molecules and materials, which then aid us in creating new molecular devices or by improving existing devices for use in new areas. Unique ultrafast optical techniques are used, results of which are combined with transient absorption, time-resolved fluorescence and time-of-flight methods for studying photogeneration of charge carriers and quickly-evolving rates of carrier drift and diffusion.

Besides optoelectronic devices, another research direction that is being pursued in the Department is the investigation of processes occurring in natural biological systems. The mechanism of initial steps in photosynthesis is investigated by ultrafast spectroscopy techniques such as two-dimensional electronic spectroscopy and time-resolved fluorescence. New theoretical models are being developed for describing excitation and carrier dynamics and the effect protein environment has on them. Structural properties of biological and other molecular objects are being determined using CARS, multiphoton fluorescence and single-molecule fluorescence microscopies. Viscosity and temperature on the microscale are being determined by fluorescent sensors.


UV-VIS spectrophotometer JASCO V-670
This spectrometer is equipped with dual-grating, dual-detector design to fully cover the range to 2700 nm.
The V-670 double-beam spectrophotometer utilizes a unique, single monochromator design covering a wavelength range from 190 to 2700 nm (3200 nm option). The monochromator features dual gratings (automatically exchanged): 1200 grooves/mm for the UV/VIS region; 300 grooves/mm for the NIR region. A PMT detector is provided for the UV/VIS region and a Peltier-cooled PbS detector is employed for the NIR region. Both gratings and detector are automatically exchanged within the user selectable 800 to 900 nm range


Fluorescence lifetime spectrometer Edinburgh Instruments FL920
The FLS920-t is a modular, computer controlled fluorescence lifetime spectrometer. Based on an L – geometry hardware configuration, the FLS920-t utilizes the technique of Time Correlated Single Photon Counting (TCSPC) to measure time resolved luminescence spectra and luminescence lifetimes spanning the range from 100 picoseconds to 10 microseconds, with the accuracy and the resolution that only the technique of TCSPC can offer.


Streak camera
Streak camera is a device used to measure ultra-fast fluorescence. Several of the many advantages against other fluorescence measuring systems is that streak camera can register the entire dataset in a very short time and it has very high time resolution – up to 2 ps. The principle of operation of the camera is similar to analog oscilloscope. The main concept of the camera is to bend the trajectory of the electrons with a varying electric field, which increases over time. Thus, the last electrons which arrive at the camera get bent the most. Since only one coordinate of the camera is used for time resolution (electron trajectory deviation), the other coordinate can be used to get spectral information. This allows gathering all the spectra with extremely good time resolution in one sweep. Streak camera is extremely useful if the sample is degrading fast or if we need to measure only the start of fluorescence decay (50-200 ps).
Our system uses 3W 1030nm "Pharos" as the main oscilator and "Hiro" harmonics genereator to produce laser pulses of ~80ps and 1030nm, 515nm, 343nm or 257nm. Frequency of the main oscilator (76MHz) can be reduced to 10kHz using Pockels cell.


2D spectrometer
The set-up is currently under construction. More info soon.


Pump-probe technique is probably the most widely used variation of ultrafast spectroscopy technique. Its concept is very simple and uses two short laser pulses: an intense pulse, ‘the pump’, which induces a photoreaction in the studied system and a weaker pulse, ‘the probe’, which monitors the corresponding change in the absorption spectrum of the sample. The delay of the probe pulse can be varied with respect to that of the pump and thus, the corresponding absorption change in the samples can be recorded at different time instances after the arrival of the pump pulse. Absorption change dynamics shows various processes that happen during the relaxation of photoexcited molecules.
The spectrometer is based on an amplified femtosecond laser Pharos 10-600-PP (Light Conversion Ltd.) generating 290 fs duration pulses at 1028 nm at a 200 kHz repetition rate. Optical parametric generator Orpheus PO15F2L (Light Conversion Ltd.) is used for tuning the wavelength of the pump pulse. We use a 2 mm thick sapphire or calcium fluoride plate in order to generate a white light continuum for probing differential absorption.


CARS microscope
CARS microscopy is label free technique which contrast mechanism based on intrinsic molecule vibrations enabling chemical selective imaging. CARS is orders of magnitude more sensitive than spontaneous Raman. Nonlinear nature of CARS signal provides 3D imaging possibility without using confocal microscopy configuration. The Anti-stokes signal is blue-shifted and therefore is free from one-photon fluorescence background.
Our home-made CARS microscope setup includes a dual wavelength laser source and a scanning microscope. The laser consists of a picosecond frequency doubled Nd:YVO4 pump laser with the pulse repetition rate of 1 MHz equipped with a traveling wave optical parametric generator (OPG) which enables probing the 700 – 4500 cm-1 range of vibration frequencies. In our scheme for CARS implementation a signal radiation from the OPG (6 ps) is coupled with fundamental wavelength (1064 nm) and used as Pump and Stokes excitation beams, respectively.


Single molecule microscope with spectrometer
Our single-molecule fluorescence microscope - spectrometer allows us to acquire signals (intensity over time or fluorescence emission spectrum) of individual fluorescent molecules either immobilised on the surface or freely diffusing in solution. The setup can be operated in two excitation-detection configurations:
By exciting a wide sample field in total internal reflection (TIR) mode and detecting fluorescence signal from a number of individual molecules in parallel. Fluorescence image is split into two spectral components. The temporal resolution is limited, however, to approximately a video rate. The main advantage of this detection mode – the possibility of observation of a large number of molecules in parallel. It also allows us to monitor single-molecule FRET signals [1].
By exciting individual molecules in confocal mode and monitoring fluorescence from separate molecules one at a time. In this mode, it is possible to acquire full fluorescence spectra and achieve better temporal resolution. Temporal resolution for spectral acquisition is a few milliseconds, whereas if opting for the detection of only two spectral components, temporal resolution is up to a few tens of nanoseconds.
Moreover, in the confocal mode, it is possible to collect fluorescence bursts from molecules diffusing freely in solution. This way vast data statistics are collected relatively fast. By analysing such data with correlation analysis, it is possible to determine, for example, the efficiency of the excitation energy transfer inside the molecule of interest.
Recently our setup was upgraded with an alternated laser excitation (ALEX) [2] and a beam rotation in the back focal plane of the objective, which allows us to achieve more even wide field illumination.

1. D. Rutkauskas, M. Petkelytė, P. Naujalis, G. Sasnauskas, G. Tamulaitis, M. Zaremba, V. Šikšnys. Restriction enzyme Ecl18kI-induced DNA looping dynamics by single-molecule FRET.  Journal of Physical Chemistry B 118, (2014), 8575-8582.
2. Kapanidis AN, Lee NK, Laurence T, Doose S, Margeat E, Weiss S. Fluorescence-aided molecule sorting: analysis of structure and interactions by alternating-laser excitation of single molecules. Proc Natl Acad Sci. 2004;101: 8936-41.


Glove Box

This glovebox (Plas-Labs basic glove box) is engineered to fit general laboratory isolation applications. It can be easily modified for specific uses. Unit is very handy for isolating sensitive research studies from a hostile exterior environment. This unit is compact, portable, lightweight and self-contained. Main features:

  • Clear one piece acrylic top,
  • Double layered, closed cellular neoprene gaskets for airtight seal between top and base,
  • Adjustable SS clamps compensate for wear
  • 8 in. O.D. ports with ambidextrous Hypalon® glove with SS O-rings
  • Transparent transfer chamber (12 L × 11 in. I.D.) with adjustable vacuum gauge
  • Four purge valves, two on transfer chamber, two on main chamber

Multiple electrical outlet strip, CE UL and CSA approved


TEA_MT - Intensity versus time trace of fluorescent spots extraction and analysis software
Author: Marijonas Tutkus

General info

  • The analysis package is written in “Igor Pro” language.
  • This software can only be distributed upon direct request to the author!

  • The software was written so that all of the daily single-molecule data analysis tasks are accessible at one place:
    • fluorescent spot detection,
    • co-localization of the fluorescent spots from 2 channels,
    • intensity versus time traces extraction for selected type of fluorescent spots,
    • filtering of traces
    • normalization of traces to an excitation field
    • intensity change point detection in the traces,
    • characterization of detected states,
    • manual selection of extracted traces,
    • 2D histogram plotting of the analysis results.
  • It can handle most of the single-molecule data formats.
  • The software has internal memory for entered parameters, the size of windows and their positions.
  • Each part of the program gives output as tables of igor binary format. There is an additional function in the main panel to convert them into delimited text format.
  • Software development was under MacOS, therefore, it may happen that Windows users find some small problems.
  • I am making updates of software constantly, therefore, feedback is highly appreciated:
  • "Stability of perovskite solar cells: identification and control of degradation processes" (Nr. 09.3.3-LMT-K-712-01-0031). 2018-2021Principal investigator - Marius Franckevičius, main implementers: Vidmantas Gulbinas, Renata Karpič, Andrius Devižis, Andrej Dementjev, Egidijus Kamarauskas.
  • “Next generation fluorescent viscosity sensors" (Nr. P-MIP-19-211). 2017-2019. Principal investigator - Aurimas Vyšniauskas.

Completed projects:

  • “Influence of acceptor materials on charge carrier generation and motion in organic solar cells”, Research Council of Lithuania. 2015-2017. Head V. Gulbinas
  • The best performing current state-of- the- art organic solar cells use fullerene-based electron acceptor mate rials. Attempts to use other, cheaper acceptor mate rials are less successful, and still remains not clear why. Recent investigations including our works revealed a relatively high electron mobility in fullerene materials, which is believed to be of the major importance for carrier generation and ,extract ion. Generally, charge carrier mobility and diffusion coefficient are among the most important parameters of electronic materials . In organic materials these parameters are typically much lower than in inorganic semiconductor.s., however strongly time-dependent; initially may be several orders of magnitude higher . In this project we will foe-us on the carrier generation and mobility dynamics in solar cells with acceptor materials based on polymers and small molecules with high electron affinity or semiconductor nanoparticles. The project aims at the development of the conceptional picture how the carrier generation and extract ion is related to the properties of electron accepting materials. We will apply photoelectrical and optical methods with ultrahigh time resolution, as well as advanced theoretical techniques to address the carrier generation mechanism and dynamics. The final task of the project is to formulate the requirements for the electron accepting materials enabling efficient operation of organic solar cells.
  • ,,Metal organic perovskite photodetectors“, National research programme "Towards future technologies". Research Council of Lithuania. 2016-2018. Head R. Augulis
    High efficiency of metoloorganic perovskite solar cells achieved to date suggests that these materials may be successfully applied for light detectors as well. Owing to exceptional properties of perovskites and their fabrication technologies these detectors are expected to reach parameters comparable with those based on inorganic semiconductors and to have some unique properties, such as low price, large area, flexibility, compatibility with state of the art organic electronics circuits. Operation principles of solar cells and detectors are similar by many aspects, but there are several essential differences, which require different materials and device structures. There are several possible different architectures of perovskite-based photo detectors which may enable optimization of different parameters important for various applications .. The aim of this project is to investigate the applicability of CH3NH3PbX3 perovskites for light detectors, evaluation of viability of different device architectures and eventually, creation of a photodetector, which by some parameters could be be comparable or superior to commercially available conventional semiconductor detectors. During this project , we will gain expertise in new technologies of fabrication of metaloorganic perovskites and fabrication of their films, develop new charge transport materials, develop and adapt spectroscopic methods for investigation of perovskites and their devices. Consequently, the project will enable the gain of competence in a very modern and innovative area of new generation optical electronics and creation of infrastructure necessary for its further development.
  • “Analysis of Photophysical Processes of Novel Light-emitting Aromatic Polymers Based on Fast Time-resolved Spectroscopy”, Lithuanian-Japan  science project. Research Council of Lithuania. 2017-2019.
    Head V. Gulbinas
    The project aims at development of photonic materials based on phthalimide compounds and polyimides.. Polyimides, due to their rigid structures and strong intermolecular interactions, are thermally and chemically stable materials with interesting thermal, mechanical, and optical properties. Moreover, their properties may be significantly varied by changing their chemical structures . It makes polyimides very interesting for creation of photonic materials for photovoltaic devices, organic light emitting diodes, functional liquid crystal alignment films, and solar spectrum converter. Luminescence properties of polyimides (quantum yield. spectrum ) may be varied by creating conditions for the excited sate internal proton transfer , aggregation, and interconversion transitions to triplet states. These processes take place simultaneously, interact and complete. Spectroscopic methods , particularly time resolved, are the major tool to get information about the electronic properties about materials and light induced processes necessary for development of advanced materials. We will investigate novel polyimides with different chemical structures with attached I, Br, and F atoms, which increase the internal conversion rate and influence the internal proton transfer. Ultrafast luminescence and transient absorption techniques :1i0 0 - e information about the rates of competing processes . Their dependences on the chemical structure, material morphology, temperature, a reveal their influence on the luminescence yields and spectra and possibilities to control them.
Most important publications
  1. Parvin, Maliha; Petrulevičienė, Milda; Savickaja, Irena; Šebeka, Benjaminas; Karpič, Renata; Grigucevičienė, Asta; Ramanauskas, Rimantas; Juodkazytė, Jurga. Influence of morphology on photoanodic behaviour of WO3 films in chloride and sulphate electrolytes. Electrochimica acta. ISSN 0013-4686. 2022, vol. 403, art. no. 139710, p. 1-12.
  2. Kasparavicius, Ernestas; Franckevičius, Marius; Malinauskiene, Vida; Genevičius, Kristijonas; Getautis, Vytautas; Malinauskas, Tadas. Oxidized spiro-OMeTAD: investigation of stability in contact with various perovskite compositions. ACS applied energy materials. ISSN 2574-0962. 2021, vol. 4, iss. 12, p. 13696-13705.
  3. Maleckaitė, Karolina; Narkevičius, Domantas; Žilėnaitė, Rugilė; Dodonova-Vaitkūnienė, Jelena; Toliautas, Stepas; Tumkevičius, Sigitas; Vyšniauskas, Aurimas. Give or take: effects of electron-accepting/-withdrawing groups in red-fluorescent BODIPY molecular rotors. Molecules. eISSN 1420-3049. 2022, vol. 27, iss. 1, art. no. 23, p. 1-14.
  4. Golubewa, Lena; Kulahava, Tatsiana; Klimovich, Aliona; Rutkauskas, Danielis; Matulaitienė, Ieva; Karpič, Renata; Belko, Nikita; Mogilevtsev, Dmitri; Kavalenka, Alena; Fetisova, Marina; Karvinen, Petri; Svirko, Yuri; Kuzhir, Polina. Visualizing hypochlorous acid production by human neutrophils with fluorescent graphene quantum dots. Nanotechnology. ISSN 0957-4484. 2022, vol. 33, no. 9, art. no. 095101, p. 1-15.
  5. Bychanok, D.; Padrez, Yaraslau; Liubetski, N.; Arlouski, A.; Kushniarou, U.; Korobov, I.; Halimski, I.; Kulahava, T.; Demidenko, M.; Urbanovič, Andžej; Macutkevič, Jan; Kuzhir, P.. Window tinting films for microwave absorption and terahertz applications. Journal of applied physics. ISSN 0021-8979. 2022, vol. 131, iss. 2, art. no. 025110, p. 1-7.
  6. Golubewa, Lena; Kulahava, Tatsiana; Timoshchenko, Igor; Shuba, Mikhail; Svirko, Yuri; Kuzhir, Polina. Rapid and delayed effects of single-walled carbon nanotubes in glioma cells. Nanotechnology. ISSN 0957-4484. 2021, vol. 32, iss. 50, art. no. 505103, p. 1-11.
  7. Xia, Rui; Xu, Yibo; Chen, Bingbing; Kanda, Hiroyuki; Franckevičius, Marius; Gegevičius, Rokas; Wang, Shubo; Chen, Yifeng; Chen, Daming; Ding, Jianning; Yuan, Ningyi; Zhao, Ying; Roldán-Carmona, Cristina; Zhang, Xiaodan; Dyson, Paul J.; Nazeeruddin, Mohammad Khaja. Interfacial passivation of wide-bandgap perovskite solar cells and tandem solar cells. Journal of materials chemistry A. ISSN 2050-7488. 2021, vol. 9, no. 38, p. 21939-21947.
  8. Schmidt-Mende, Lukas; Dyakonov, Vladimir; Olthof, Selina; Ünlü, Feray; Moritz Trong Lê, Khan; Mathu, Sanjay; Karabanov, Andrei D.; Lupascu, Doru C.; Herz, Laura M.; Hinderhofer, Alexander; Schreiber, Frank; Chernikov, Alexey; Egger, David A.; Shargaieva, Oleksandra; Cocchi, Caterina; Unger, Eva; Saliba, Michael; Malekshahi Byranvand, Mahdi; Kroll, Martin; Nehm, Frederik; Leo, Karl; Redinger, Alex; Höcker, Julian; Kirchartz, Thomas; Warby, Jonathan; Gutierrez-Partida, Emilio; Neher, Dieter; Stolterfoht, Martin; Würfel, Uli; Unmüssig, Moritz; Herterich, Jan; Baretzky, Clemens; Mohanraj, John; Thelakkat, Mukundan; Maheu, Clément; Jaegermann, Wolfram; Mayer, Thomas; Rieger, Janek; Fauster, Thomas; Niesner, Daniel; Yang, Fengjiu Yang; Albrecht, Steve; Riedl, Thomas; Fakharuddin, Azhar; Vasilopoulou, Maria; Vaynzof, Yana; Moia, Davide; Maier, Joachim; Franckevičius, Marius; Gulbinas, Vidmantas; Kerner, Ross A.; Zhao, Lianfeng; Rand, Barry P.; Glück, Nadja; Bein, Thomas; Matteocci, Fabio; Castriotta, Luigi Angelo; Di Carlo, Aldo; Scheffler, Matthias; Draxl, Claudia. Roadmap on organic–inorganic hybrid perovskite semiconductors and devices. APL Materials. ISSN 2166-532X. 2021, vol. 9, iss. 10, art. no. 109202, p. 1-82.
  9. Devižis, Andrius; Gelžinis, Andrius; Chmeliov, Jevgenij; Diethelm, Matthias; Endriukaitis, Laurynas; Padula, Daniele; Hany, Roland. Carrier tunneling from charge transfer states in organic photovoltaic cells. Advanced functional materials. ISSN 1616-301X. 2021, vol. 31, iss. 29, art. no. 2102000, p. 1-8.
  10. Liu, Cheng; Yang, Yi; Rakstys, Kasparas; Mahata, Arup; Franckevičius, Marius; Mosconi, Edoardo; Skackauskaite, Raminta; Ding, Bin; Brooks, Keith G.; Usiobo, Onovbaramwen Jennifer; Audinot, Jean-Nicolas; Kanda, Hiroyuki; Driukas, Simonas; Kavaliauskaitė, Gabrielė; Gulbinas, Vidmantas; Dessimoz, Marc; Getautis, Vytautas; De Angelis, Filippo; Ding, Yong; Dai, Songyuan; Dyson, Paul J.; Nazeeruddin, Mohammad Khaja. Tuning structural isomers of phenylenediammonium to afford efficient and stable perovskite solar cells and modules. Nature communications. ISSN 2041-1723. 2021, vol. 12, art. no. 6394, p. 1-9.
  11. Braver, Jakov; Valkūnas, Leonas; Gelžinis, Andrius. Quantum–classical approach for calculations of absorption and fluorescence: principles and applications. Journal of chemical theory and computation. ISSN 1549-9618. 2021, vol. 17, iss. 11, p. 7157-7168.
  12. Sherin, Peter S.; Vyšniauskas, Aurimas; López-Duarte, Ismael; Ogilby, Peter R.; Kuimova, Marina K. Visualising UV-A light-induced damage to plasma membranes of eye lens. Journal of photochemistry and photobiology B: biology. ISSN 1011-1344. 2021, vol. 225, art. no.112346, p. 1-10.
  13. Maleckaitė, Karolina; Dodonova, Jelena; Toliautas, Stepas; Žilėnaitė, Rugilė; Jurgutis, Džiugas; Karabanovas, Vitalijus; Tumkevičius, Sigitas; Vyšniauskas, Aurimas. Designing a red-emitting viscosity-sensitive BODIPY fluorophore for intracellular viscosity imaging. Chemistry – a European journal. ISSN 0947-6539.2021, vol. 27, iss. 67, p. 16768-16775.
  14. Chmeliov, Jevgenij; Elkhouly, Karim; Gegevičius, Rokas; Jonušis, Lukas; Devižis, Andrius; Gelžinis, Andrius; Franckevičius, Marius; Goldberg, Iakov; Hofkens, Johan; Heremans, Paul; Qiu, Weiming; Gulbinas, Vidmantas. Ion motion determines multiphase performance dynamics of perovskite LEDs. Advanced optical materials. ISSN 2195-1071. 2021, vol. 9, iss. 24, art. no. 2101560, p. 1-12.
  15. Braver, Jakov; Valkūnas, Leonas; Gelžinis, Andrius. Stark absorption and Stark fluorescence spectroscopies: Theory and simulations. Journal of chemical physics. ISSN 0021-9606. 2021, vol. 155, iss. 24, art. no. 244101, p. 1-16.
  16. Vyšniauskas, Aurimas; Cornell, Bethan; Sherin, Peter S.; Maleckaitė, Karolina; Kubánková, Markéta; Izquierdo, Maria Angeles; Vu, Thanh Truc; Volkova, Yulia A.; Budynina, Ekaterina M.; Molteni, Carla; Kuimova, Marina K. Cyclopropyl substituents transform the viscosity-sensitive BODIPY molecular rotor into a temperature sensor. ACS sensors. ISSN 2379-3694. 2021, vol. 6, iss. 6, p. 2158-2167.
  17. Kručaitė, Gintarė; Beresnevičiūtė, Raminta; Tavgenienė, Daiva; Grigalevičius, Saulius; Zhang, Baohua; Gruodis, Alytis; Charniakova, Katsiaryna; Karpič, Renata. Hole-transporting materials based on diarylfluorene compounds containing different substituents: DFT simulation, spectroscopic characterization and applications in organic light emitting diodes. Optical materials. ISSN 0925-3467.  2021, vol. 119, art. no. 111345, p. 1-8.
  18. Kavaliauskaitė, Gabrielė; Kuksėnaitė, Gintarė; Gegevičius, Rokas; Pakštas, Vidas; Selskis, Algirdas; Strazdienė, Viktorija; Padarauskas, Audrius; Orentas, Edvinas; Gulbinas, Vidmantas; Franckevičius, Marius. S-methylthiouronium improves the photostability of methylammonium lead iodide perovskites. ACS applied energy materials. ISSN 2574-0962. 2021, vol. 4, iss. 7, p. 6466-6473.
  19. Golovinas, Edvardas; Rutkauskas, Danielis; Manakova, Elena; Jankunec, Marija; Šilanskas, Arūnas; Sasnauskas, Giedrius; Zaremba, Mindaugas. Prokaryotic Argonaute from Archaeoglobus fulgidus interacts with DNA as a homodimer. Scientific reports. ISSN 2045-2322. 2021, vol. 11, art. no. 4518, p. 1-14
  20. Dovbeshko, Galyna; Gnatyuk, Olena; Dementjev, Andrej; Rutkauskas, Danielis; Kovalska, Evgeniya; Baldycheva, Anna; Ilchenko, Oleksii; Krasnenkov, Dmytro; Kaplas, Tommi. Coherent anti-stokes Raman scattering spectroscopy (CARS) and imaging of DNA on graphene layers and glass covers. FlatChem. ISSN 2452-2627. 2021, vol. 27, art. no. 100243, p. 1-8.
  21. Gegevičius, Rokas; Franckevičius, Marius; Gulbinas, Vidmantas. The role of grain boundaries in charge carrier dynamics in polycrystalline metal halide perovskites. European journal of inorganic chemistry. ISSN 1434-1948.  2021, vol. 2021, no 35, p. 3519-3527.
  22. Páez-Pérez, Miguel; López-Duarte, Ismael; Vyšniauskas, Aurimas; Brooks, Nicholas J.; Kuimova, Marina K. Imaging non-classical mechanical responses of lipid membranes using molecular rotors. Chemical science. ISSN 2041-6520. 2021, vol. 12, iss. 7, p. 2604-2613.
  23. Karpič, Renata; Ostapenko, Nina; Ostapenko, Yura; Polupan, Yaroslava; Lazarev, Igor; Galunov, Nikolai; Mačernis, Mindaugas; Abramavičius, Darius; Valkūnas, Leonas. Unusual temperature dependence of the fluorescence decay in heterostructured stilbene. Physical chemistry chemical physics. ISSN 1463-9076. 2021, vol. 23, iss. 5, p. 3447-3454.
  24. Gelžinis, Andrius; Augulis, Ramūnas; Büchel, Claudia; Robert, Bruno; Valkūnas, Leonas. Confronting FCP structure with ultrafast spectroscopy data: evidence for structural variations. Physical chemistry chemical physics. ISSN 1463-9076. 2021, vol. 23, iss. 2, p. 806-821.
  25. Žalnėravičius, Rokas; Klimas, Vaclovas; Paškevičius, Algimantas; Grincienė, Giedrė; Karpicz, Renata; Jagminas, Arūnas; Ramanavičius, Arūnas. Highly efficient antimicrobial agents based on sulfur-enriched, hydrophilic molybdenum disulfide nano/microparticles and coatings functionalized with palladium nanoparticles. Journal of colloid and interface science. ISSN 0021-9797. 2021, vol. 591, p. 115-128.
  26. Paek, Sanghyun; Khan, Sher Bahadar; Franckevičius, Marius; Gegevičius, Rokas; Syzgantseva, Olga A.; Syzgantseva, Maria A.; Kinche, Sachin; Asiri, Abdullah M.; Roldán-Carmona, Cristina; Nazeeruddin, Mohammed Khaja. Cation optimization for burn-in loss-free perovskite solar devices. Journal of materials chemistry A. ISSN 2050-7488. 2021, vol. 9, iss. 9, p. 5374-5380.
  27. Fujiwara, Eisuke; Orita, Ryoji; Vyšniauskas, Aurimas; Franckevičius, Marius; Ishige, Ryohei; Gulbinas, Vidmantas; Ando, Shinji. Ultrafast spectroscopic analysis of pressure-induced variations of excited-state energy and intramolecular proton transfer in semi-aliphatic polyimide films. The journal of physical chemistry B. ISSN 1520-6106. 2021, vol. 125, iss. 9, p. 2425-2434.
  28. Kopūstas, Aurimas; Ivanovaitė, Šarūnė; Rakickas, Tomas; Pocevičiūtė, Ernesta; Paksaitė, Justė; Karvelis, Tautvydas; Zaremba, Mindaugas; Manakova, Elena; Tutkus, Marijonas. Oriented soft DNA curtains for single-molecule imaging. Langmuir. ISSN 0743-7463. 2021, vol. 37, iss. 11, p. 3428-3437.
  29. Tutkus, Marijonas; Chmeliov, Jevgenij; Trinkūnas, Gediminas; Akhtar, Parveen; Lambrev, Petar H.; Valkūnas, Leonas. Aggregation-related quenching of LHCII fluorescence in liposomes revealed by single-molecule spectroscopy. Journal of photochemistry and photobiology B: Biology. ISSN 1011-1344. 2021, vol. 218, art. no. 112174, p. 1-7.
  30. Fakharuddin, Azhar; Franckevičius, Marius; Devižis, Andrius; Gelžinis, Andrius; Chmeliov, Jevgenij; Heremans, Paul; Gulbinas, Vidmantas. Double charge transfer dominates in carrier localization in low bandgap sites of heterogeneous lead halide perovskites. Advanced functional materials. ISSN 1616-301X. 2021, vol. 31, iss. 15, art. no. 2010076, p. 1-9.
  31. Jasiūnas, Rokas; Zhang, Huotian; Yuan, Jun; Zhou, Xuehong; Qian, Deping; Zou, Yingping; Devižis, Andrius; Šulskus, Juozas; Gao, Feng; Gulbinas, Vidmantas. From generation to extraction: a time-resolved investigation of photophysical processes in non-fullerene organic solar cells. Journal of physical chemistry C. ISSN 1932-7447. 2020, vol. 124, no. 39, p. 21283-21292.
  32. Golubewa, Lena; Timoshchenko, I.; Romanov, O.; Karpič, Renata; Kulahava, T.; Rutkauskas, Danielis; Shuba, M.; Dementjev, Andrej; Svirko, Yu.; Kuzhir, P. Single‑walled carbon nanotubes as a photo‑thermo‑acoustic cancer theranostic agent: theory and proof of the concept experiment. Scientific reports. ISSN 2045-2322. 2020, vol. 10, art. no. 22174, p. 1-9.
  33. Vagner, Milita; Plaušinaitienė, Valentina; Lukose, Rasuole; Keršulis, Skirmantas; Talaikis, Martynas; Knašienė, Birutė; Stanionytė, Sandra; Kubilius, Virgaudas; Motiejuitis, Karolis; Šaltytė, Zita; Niaura, Gediminas; Naujalis, Evaldas; Žurauskienė, Nerija. PI-MOCVD technology of (La, Sr)(Mn, Co)O3: From epitaxial to nanostructured films. Surface and coatings technology. ISSN 0257-8972. 2020, vol. 385, art. no. 125287, p. 1-8.
  34. Ramanavičius, Simonas; Tereshchenko, Alla; Karpič, Renata; Ratautaitė, Vilma; Samukaitė-Bubnienė, Urtė; Maneikis, Andrius; Jagminas, Arūnas; Ramanavičius, Arūnas. TiO2-x/TiO2-structure based ‘self-heated’ sensor for the determination of some reducing gases. Sensors. ISSN 1424-8220. 2020, vol. 20, iss. 1, art. no. 74, p. 1-17.
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