Donor - Acceptor thiolated polyenic chromophores exhibiting large optical nonlinearity and excellent photostability

Yen-Ju Cheng, Jingdong Luo, Su Huang, Xinghua Zhou, Zhengwei Shi, Tae Dong Kim, Denise H. Bale, Satsuki Takahashi, Andrew Yick, Brent M. Polishak, Sei Hum Jang, Larry R. Dalton, Philip J. Reid, William H. Steier, Alex K.Y. Jen

研究成果: Article同行評審

162 引文 斯高帕斯(Scopus)

摘要

We have successfully utilized epoxyisophorone ring-opening chemistry to efficiently incorporate the butylthio group to the phenyltetraene bridge of highly efficient nonlinear optical chromophores in high overall yield. By following the guidance of Dewar's rules, the sulfur atom functions as a moderate π-accepting group at a starred position of the conjugated bridge. Several of very critical material parameters of the phenyltetraenic chromophores for device applications have been intrinsically and simultaneously improved through such a simple and straightforward engineering of molecular structures. Compared with the nonsubstituted analogue 2, thiolated chromophore 1 achieves higher molecular hyperpolarizability (34%), enhanced E-O coefficient (38%), significantly improved photochemical stability against 1O2 (by an order of magnitude), and better optical transparency (17 nm blue-shifted λmax absorption spectrum).

原文English
頁(從 - 到)5047-5054
頁數8
期刊Chemistry of Materials
20
發行號15
DOIs
出版狀態Published - 12 8月 2008

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