Dalius Gudeika

Kaunas University of Technology

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Juozas V. Gražulevičius

Kaunas University of Technology

Dmytro Volyniuk

Kaunas University of Technology

Oleksandr Bezvikonnyi

Kaunas University of Technology

Ju̅ratė Simokaitienė

Kaunas University of Technology

Ramūnas Lygaitis

Kaunas University of Technology

Audrius Bučinskas

Kaunas University of Technology

Rita Butkutė

Kaunas University of Technology

Vygintas Jankauskas

Vilnius University

Mārtiņš Rutkis

University of Latvia

Saulius Juršėnas

Vilnius University

Cooperative Institutions

Kaunas University of Technology

Vilnius University

Lviv Polytechnic National University

National Taiwan University

Lviv University

Centre National de la Recherche Scientifique

Taras Shevchenko National University of Kyiv

Durham University

Belarusian State University

Institute of Nanotechnology

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CCDC 2004089: Experimental Crystal Structure Determination

The Cambridge Structural Database (2020)

Ronit Sebastine Bernard Galyna Sych Sohrab Nasiri Oleksandr Bezvikonnyi Dmytro Volyniuk

10.5517/ccdc.csd.cc258f1y

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CCDC 1042467: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Audrius Bučinskas Gintautas Bagdžiūnas Aušra Tomkevičienė Dmytro Volynyuk Nataliya Kostiv

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Crystal (programming language)

10.5517/cc13zrzt

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Preparation and investigation of phenanthroimidazole-based derivative

Molecular Crystals and Liquid Crystals (2021)

Eigirdas Skuodis Tomas Janeliunas Rokas Zubrevicius Tadas Zutautas Dalius Gudeika

The synthesis and properties of N-(4-(tert-butyl)phenyl)-2′-(1-(4-(tert-butyl)phenyl)-1H-phenanthro[9,10-d]imidazol-2-yl)-N-(2-ethylhexyl)-[1,1′-biphenyl]-2-carboxamide were described. The practical characteristics of derivative were investigated by thermal, electrochemical and photophysical measurements and the data were compared with the theoretical values calculated by density functional theory. Compound exhibited high thermal stability with 5% weight loss temperature of 370 °C. Ionization potential value of compound estimated by cyclic voltammetry was found to be 5.48 eV. The high triplet energy (2.82 eV) and high electron affinity values (3.14 eV) of derivative were also observed.

Derivative (finance)

Biphenyl

Thermal Stability

10.1080/15421406.2020.1862467

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Citations (1)

Effect of Substituents with the Different Electron-Donating Abilities on Optoelectronic Properties of Bipolar Thioxanthone Derivatives

ACS Applied Electronic Materials (2023)

Simas Macionis Dalius Gudeika Dmytro Volyniuk Malek Mahmoudi Jūratė Simokaitienė

The synthesis and optoelectronic properties of four simple-structure thioxanthone derivatives employing thioxanthone as an acceptor unit, coupled with moieties having very different electron-donating abilities such as phenoxazine, 3,6-di-tert-butylcarbazole, 3,7-di-tert-butylphenothiazine, or 2,7-di-tert-butyl-9,9-dimethylacridane, are reported. The compounds form molecular glasses with glass transition temperatures reaching 116 °C. Ionization potentials of the compounds estimated by photoelectron emission method range from 5.42 to 5.74 eV. Thioxanthone derivatives containing 3,6-tert-butylcarbazole or 2,7-di-tert-butyl-9,9-dimethylacridane moieties with weak electron-donating strengths were characterized by bipolar charge transport with relatively close hole and electron mobility values of 6.8 × 10–5/2.4 × 10–5 and 3.1 × 10–5/4.6 × 10–6 cm2/(V s) recorded at 3.6 × 105 V/cm. The other compounds demonstrated hole-transporting properties. The films of thioxanthones containing phenoxazine or 2,7-di-tert-butyl-9,9-dimethylacridane moieties showed efficient thermally activated delayed fluorescence with a photoluminescence quantum yield of up to 50% due to the solid-state luminescence enhancement. Organic-light-emitting diodes containing the synthesized compounds as emitters showed very different external quantum efficiencies (0.9–10.3%) and blue, sky blue, green, or yellow electroluminescence colors, thus reflecting the effects of donor substituents.

Thioxanthone

10.1021/acsaelm.3c00092

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Citations (4)

Differently substituted benzothiadiazoles as charge-transporting emitters for fluorescent organic light-emitting diodes

Dyes and Pigments (2019)

Dalius Gudeika Arūnas Miasojedovas Oleksandr Bezvikonnyi Dmytro Volyniuk Alytis Gruodis

Carbazole

Acceptor

Quantum Efficiency

Electron donor

10.1016/j.dyepig.2019.03.017

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Citations (20)

Facile structure-modification of xanthenone based OLED emitters exhibiting both aggregation induced emission enhancement and thermally activated delayed fluorescence

Journal of Luminescence (2019)

Sohrab Nasiri Simas Macionis Dalius Gudeika Dmytro Volyniuk Juozas V. Gražulevičius

Acceptor

Heteroatom

Electron donor

Electron acceptor

Dihedral angle

10.1016/j.jlumin.2019.116955

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Citations (13)

Review of: "Synthesis of 1, 2-Disubstituted Benzimidazoles at Ambient Temperature Catalyzed by 1-Methylimidazolium Tetraflouroborate ([Hmim] BF_4) and Investigating Their Anti-ovarian Cancer Properties Through Molecular Docking Studies and Calculations"

Dalius Gudeika

Docking (animal)

10.32388/k4g60n

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Structure–property relationship of isomeric diphenylethenyl-disubstituted dimethoxycarbazoles

RSC Advances (2015)

Audrius Bučinskas Gintautas Bagdžiūnas Aušra Tomkevičienė Dmytro Volynyuk Nataliya Kostiv

Isomeric 3,6-dimethoxy- and 2,7-dimethoxycarbazoles containing diphenylethenyl moieties were synthesized by condensation of the appropriate dimethoxycarbazoles with diphenylacetaldehyde.

10.1039/c5ra09161f

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Citations (17)

Is a small singlet–triplet energy gap a guarantee of TADF performance in MR-TADF compounds? Impact of the triplet manifold energy splitting

Journal of Materials Chemistry C (2024)

Rasa Keruckienė Aliaksei A. Vaitusionak Maksim I. Hulnik Ivan A. Berezianko Dalius Gudeika

A design strategy for efficient MR-TADF emitters needs (i) avoiding aggregation by inducing steric hindrance at peripheral strategic positions, and (ii) combining lateral groups of higher donor character as compared to the central core.

Singlet fission

10.1039/d3tc04397e

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Citations (14)

Synthesis and antibacterial activity evaluation of carbazole-based compounds

Kęstutis Dabravolskas Ilona Jonuškienė Simona Sutkuvienė Dalius Gudeika

Carbazole

Source

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