期刊
CHEMISTRY OF MATERIALS
卷 20, 期 23, 页码 7312-7318出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm801427s
关键词
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资金
- National Science Foundation of China [50820145304, 20573040, 50733002]
- Ministry of Science and Technology of China [2002CB6134003]
- PCSIRT
The supramolecular interactions are of importance for inducing the molecular orientation and constructing functional materials with high performance. In this manuscript we report uniaxially oriented molecular crystal of a cyano substituted oligo(p-phenylene vinylene) 1,4-bis(alpha-eyano-4-diphenylaminostyryl)-2,5-diphenylbenzene (CNDPASDB) with high luminescence under the driving force of the three-dimensional supramolecular interaction networks. Amplified spontaneous emission (ASE) with a low threshold value of 30.5 kW/cm(2) was observed from a high-quality slab-like CNDPASDB crystal and verified by the variable pump stripe method. The net gain coefficient with 55 cm(-1) is also measured. The tip of CNDPASDB crystal exhibits polarized self-waveguided emission due to the propagation of polarized light emitted from the uniaxially oriented CNDPASDB molecules along crystal surface.
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