Photosciences and Photonics Section, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) and Network of Institutes for Solar Energy, CSIR , Trivandrum 695019, India.
Centre for Nano and Soft Matter Sciences , Jalahalli, Bangalore 560013, India.
J Phys Chem B. 2017 Mar 2;121(8):1922-1929. doi: 10.1021/acs.jpcb.6b09820. Epub 2017 Feb 21.
Herein, we report the synthesis, self-assembly, and electroluminescence characteristics of a new green-emitting, pseudodiscoid chiral molecule, OXDC, containing an electron-donating stilbene core and an electron-accepting oxadiazole substituent. The helical organization and specific interaction of the chiral pseudodiscoid molecule resulted in the formation of self-assembled nanofibers with a columnar superstructure. Macroscopic chirality was observed in both the liquid-crystalline phases and the self-assembled nanofibers of OXDC, a feature which was absent in the analogous achiral oxadiazole derivative reported earlier [ Sivadas , A. P. ; Supergelation via Purely Aromatic π-π Driven Self-Assembly of Pseudodiscotic Oxadiazole Mesogens . J. Am. Chem. Soc. 2014 , 136 , 5416 - 5423 ]. A high-performance organic light-emitting device was demonstrated using OXDC as the emitting material, with a luminous intensity of 10 115 cd m at 5 V and chromaticity coordinates of (0.32, 0.51).
在此，我们报告了一种新型绿色发光的拟盘状手性分子 OXDC 的合成、自组装和电致发光特性，该分子含有给电子的二苯乙烯核心和受电子的恶二唑取代基。手性拟盘状分子的螺旋组织和特定相互作用导致自组装纳米纤维形成柱状超结构。在 OXDC 的液晶相和自组装纳米纤维中都观察到了宏观手性，而在之前报道的类似非手性恶二唑衍生物中则没有这种特性[ Sivadas ，A.P.；通过纯芳香π-π 驱动的拟盘状恶二唑介晶的超凝胶化。美国化学学会杂志。2014 年，136 ，5416-5423]。使用 OXDC 作为发光材料，展示了一种高性能有机发光器件，在 5 V 时的亮度为 10115 cd m，色度坐标为（0.32，0.51）。
