期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 23, 期 59, 页码 14718-14722出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201703364
关键词
blue light; columnar hexagonal materials; heptazine; discotic behavior; smectic
资金
- CSIR [02(0311)/17/EMR-II]
- CSIR-NET [09/947(0061)/2015-EMR-1]
- DST-SERB [ECR/2016/001469]
- DST-Nano Mission [SR/NM/NT-06/2016]
- DST (India) SERB fellowship [PDF/2016/002227]
Herein, room-temperature discotic liquid crystals based on heptazine, an electron deficient central core, are reported for the first time. Mesomorphic behaviors of the materials are also investigated. Supramolecular assembly of the mesophase derivatives were confirmed by X-ray scattering experiments. Heptazine-based solid thin films are strong blue light emitters, whereas in the solution state, they are weakly emissive or non-emissive. The band gap energy is found to be low in this class of compounds. Formation of room-temperature mesophases, low band-gap behavior, and strong blue-light emission in the solid state are promising attributes for optoelectronic applications of the materials.
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