Separation of photoactive conformers based on hindered diarylethenes: efficient modulation in photocyclization quantum yields

Wenlong Li; Changhong Jiao; Xin Li; Yongshu Xie; Keitaro Nakatani; He Tian; Weihong Zhu

doi:10.1002/anie.201310438

Separation of photoactive conformers based on hindered diarylethenes: efficient modulation in photocyclization quantum yields

Angew Chem Int Ed Engl. 2014 Apr 25;53(18):4603-7. doi: 10.1002/anie.201310438. Epub 2014 Mar 25.

Authors

Wenlong Li¹, Changhong Jiao, Xin Li, Yongshu Xie, Keitaro Nakatani, He Tian, Weihong Zhu

Affiliation

¹ Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science & Technology, Shanghai 200237 (China).

PMID: 24668917
DOI: 10.1002/anie.201310438

Abstract

Endowing both solvent independency and excellent thermal bistability, the benzobis(thiadiazole)-bridged diarylethene system provides an efficient approach to realize extremely high photocyclization quantum yields (Φo-c , up to 90.6 %) by both separating completely pure anti-parallel conformer and suppressing intramolecular charge transfer (ICT).

Keywords: fluorescence; intramolecular charge transfer; photochromism; quantum yield; steric hindrance.