Phase-dependent photoluminescence of non-symmetric 2,1,3-benzothiadiazole liquid crystals
作者:Thaiane O. Benevides、Elias Regis、Celso R. Nicoleti、Ivan H. Bechtold、André A. Vieira
DOI:10.1016/j.dyepig.2018.12.012
日期:2019.4
understand the effect of disubstitution on calamitic liquidcrystals, a series of non-symmetric 2,1,3-benzothiadiazole compounds were synthesized and characterized. These specific molecular architectures without the C2 axis were prepared to investigate their mesomorphism and physicalproperties and to compare them with symmetric molecules. Their liquid crystalline behavior was studied by differential scanning
Strongly luminescent and liquid-crystalline π-conjugated 2-methyl[1,2,3]benzotriazoles with a linear donor-acceptor-donor structure
作者:Elias Regis da Silva、Abad Roger Castillo Hinojosa、Juliana Eccher、Michele Duarte Tonet、Daniela Brondani、Eduardo Zapp、Sergio Fernando Curcio、Bruna Bueno Postacchini、Thiago Cazati、André Alexandre Vieira
DOI:10.1016/j.molliq.2020.113616
日期:2020.9
with near-unity quantum yields in solution. The peripheral groups significantly influence the excited-statelifetime. Fluorescence quenching is observed in the presence of C60, testifying of charge transfer to the fullerene acceptor. The varying sterical demand of the different substituents considerably influences the efficiency of the charge transfer induced fluorescence quenching. HOMO, LUMO and band
Click for Light: Synthesis of bent (Benzothiadiazolyl)triazole luminescent liquid crystals via click Chemistry
作者:Rebeca de Oliveira Costa、Tiago Vinicius Alves、Murillo Halo Queiroz de Oliveira、Feik Amil de Campos Junior、Ivan H. Bechtold、Eduard Westphal、André Alexandre Vieira
DOI:10.1016/j.molliq.2024.125425
日期:2024.9
different peripheral units connected to the BTT core via triple bonds. The click reaction was used as a tool to construct the central unit (benzothiadiazolyl)triazole. The molecules exhibited calamitic mesomorphism when long alkoxy groups terminally substituted them. These compounds combined smectic liquid-crystalline self-assembly with strong fluorescence not only in solution but also in the condensed