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Proceedings Paper

Synthesis and structure property relationship of several dicyanomethylene malononitrile derivatives
Author(s): Juan Du; Yu Wang; Yuxia Zhao; Feipeng Wu
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Paper Abstract

Based on the intramolecular charge-transfer (ICT) molecule 2-[bis-(4'-diethylamino-biphenyl-4-yl)-methylene]- malononitrile (D7), two novel malononitrile derivatives (C1 and C2) with 2,7- and 3,6-substituted fluorene as conjugated backbones, respectively, were synthesized, which had the same electro-donor and acceptor groups as D7. The effects of the conjugated backbone and substitution site on optical properties of these compounds were investigated. 3,6-substituted fluorene is a better conjugated unit for ICT compared to 2,7 substitution site, whereas it is still weaker than diphenylmethyl unit in D7. However, due to the rigidity of fluorene, C2 possesses much higher fluorescence quantum yield. The results are supported by TD-DFT calculation. This study develops theoretical basis for designing effective optical or electronic materials.

Paper Details

Date Published: 25 October 2016
PDF: 8 pages
Proc. SPIE 9686, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices, 96860Q (25 October 2016); doi: 10.1117/12.2241720
Show Author Affiliations
Juan Du, Technical Institute of Physics and Chemistry (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Yu Wang, Technical Institute of Physics and Chemistry (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Yuxia Zhao, Technical Institute of Physics and Chemistry (China)
Feipeng Wu, Technical Institute of Physics and Chemistry (China)


Published in SPIE Proceedings Vol. 9686:
8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices
Yadong Jiang; Bernard Kippelen; Junsheng Yu, Editor(s)

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