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Highly luminescent crystals of a novel linear π‐conjugated thiophene–phenylene co‐oligomer with a benzothiadiazole fragment
Author(s) -
Postnikov Valery A.,
Sorokitaliya I.,
Kulishov Artem A.,
Lyasnikova Maria S.,
Grebenev Vadim V.,
Voloshin Alexey E.,
Borshchev Oleg V.,
Skorotetcky Maxim S.,
Surin Nikolay M.,
Svidchenko Evgeniya A.,
Ponomarenko Sergei A.
Publication year - 2019
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s2052520619012484
Subject(s) - oligomer , phenylene , thiophene , conjugated system , fragment (logic) , luminescence , polymer chemistry , materials science , photochemistry , chemistry , polymer , organic chemistry , optoelectronics , computer science , programming language
The synthesis, growth from solutions and structure of crystals of a new linear thiophene–phenylene co‐oligomer with a central benzothiadiazole fragment with a conjugated core, (TMS‐2T‐Ph) 2 ‐BTD, are presented. Single‐crystal samples in the form of needles with a length of up to 7 mm were grown and their crystal structure was determined at 85 K and 293 K using single‐crystal X‐ray diffraction. The conformational differences between the crystal structures are insignificant. The parameters of melting and liquid crystalline phase transitions of (TMS‐2T‐Ph) 2 ‐BTD were established using differential scanning calorimetry and the thermal stability of the crystals was investigated using thermogravimetric analysis. The optical absorption and photoluminescence spectra of the solutions and crystals of (TMS‐2T‐Ph) 2 ‐BTD were obtained, and the kinetics of their photodegradation under the action of UV radiation were studied.