当前位置: X-MOL 学术ACS Omega › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Room-Temperature, Deep-Red/NIR-Emissive, C3-Symmetric (n,π-conjugated) Columnar Liquid Crystals: C3h-Tris(keto-hydrazone)s
ACS Omega ( IF 3.7 ) Pub Date : 2021-01-22 , DOI: 10.1021/acsomega.0c05779
Rashmi Ashwathama Nayak 1 , Bhyranalyar Nagarajappa Veerabhadraswamy 1 , Doddamane S. Shankar Rao 1 , Achalkumar Ammathnadu Sudhakar 2 , Channabasaveshwar V. Yelamaggad 1
Affiliation  

The first examples of deep-red/near-infrared (NIR) photoluminescent, (n,π-conjugated) discotics, namely, C3h-tris(keto-hydrazone)s, which are the tautomers of tris(azo-enol)s, have been synthesized via a facile one-step triple azo-coupling and characterized. The n,π-resonance-assisted intramolecular H-bonding, rendering planarity and shape persistence to the central core, facilitates their self-assembly into either a hexagonal columnar (Colh) phase (p6mm lattice) or a columnar rectangular (Colr) phase (p2mm lattice), over an extended thermal range including room temperature, fluorescing in the deep-red/NIR-I region. The low band gap with deep-red/NIR emission makes them ideal candidates for NIR-organic light-emitting diodes (OLEDs) and bioimaging.

中文翻译:

室温,深红色/近红外发射,C 3-对称(n,π共轭)柱状液晶:C 3 h -Tris(酮-)s

深红色/近红外(NIR)光致发光,(n,π-共轭)圆盘片的第一个例子,即C 3 h -tris(酮-),它是tris(偶氮-烯醇)的互变异构体通过简单的一步三重偶氮偶合已经合成了S 1,并对其进行了表征。n,π共振辅助的分子内H键使中心核具有平面性和形状持久性,有助于它们自组装成六方柱状(Col h)相(p 6 mm晶格)或柱状矩形(Col r)相(p 2 mm晶格),在包括室温在内的扩展热范围内,在深红色/ NIR-1区域发出荧光。具有深红色/ NIR发射的低带隙使其成为NIR有机发光二极管(OLED)和生物成像的理想候选者。
更新日期:2021-02-02
down
wechat
bug