A pentiptycene-derived light-driven molecular brake

JS Yang, YT Huang, JH Ho, WT Sun, HH Huang…

Index: Yang, Jye-Shane; Huang, Yao-Ting; Ho, Jinn-Hsuan; Sun, Wei-Ting; Huang, Hsin-Hau; Lin, Ying-Chih; Huang, Shing-Jong; Huang, Shou-Ling; Lu, Hsiu-Feng; Chao, Ito Organic Letters, 2008 , vol. 10, # 11 p. 2279 - 2282

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Citation Number: 60

Abstract

A room-temperature light-driven molecular brake (1), consisting of a pentiptycene rotator, a 3, 5-dinitrophenyl brake, and a photoisomerizable ethenyl spacer, is reported. The rotation rates of the rotator differ by about 9 orders of magnitude between the brake-on (cis-1) and brake-off (trans-1) states.