Novel four-hydrogen-bond assembled oligoamide dimer with pyrazoline moieties and its photoluminescent properties

In this paper, the synthesis and characterization of a triarylpyrazoline modified four-H-bonded molecular duplex are described. Its molecular structure has been confirmed by ^1H NMR and ESI-MS. The duplex emits strong pure blue light peaking at 448 and 452 nm under UV photoexcitation in solution and...

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Bibliographic Details
Published in:Chinese chemical letters 2009-12, Vol.20 (12), p.1419-1422
Main Authors: Lei, Guang Dong, Li, Ming, Qiu, De Min, Liu, Hui, Huang, Yan, Lu, Zhi Yun
Format: Article
Language:English
Subjects:
H-bond
Organogel
Photoluminescence
Pyrazoline
Self-assembly
二甲基亚砜
二聚体
光致发光特性
分子结构
发光量子效率
吡唑啉
氢键组装
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Summary:In this paper, the synthesis and characterization of a triarylpyrazoline modified four-H-bonded molecular duplex are described. Its molecular structure has been confirmed by ^1H NMR and ESI-MS. The duplex emits strong pure blue light peaking at 448 and 452 nm under UV photoexcitation in solution and solid state, respectively, and its relative photoluminescence quantum efficiency in solution is determined as 0.778 using quinine sulfate as reference. In concentration of 〉40 mmol/L, the duplex can gelate DMSO, and the organogel formed shows good pure blue photoluminescence too. This novel duplex, for its well-defined structure and efficient photoluminescence property, is a prospective candidate for pure blue electroluminescent emitter.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2009.06.034