An Antilock Molecular Braking System

作者:Sun Wei Ting; Huang Shou Ling; Yao Hsuan Hsiao; Chen I Chia*; Lin Ying Chih; Yang Jye Shane
来源:Organic Letters, 2012, 14(16): 4154-4157.
DOI:10.1021/ol3018193

摘要

A light-driven molecular brake displaying an antilock function is constructed by introducing a nonradiative photoinduced electron transfer (PET) decay channel to compete with the trans (brake-off) -> cis (brake-on) photoisomerization. A fast release of the brake can be achieved by deactivating the PET process through addition of protons. The cycle of irradiation-protonation-irradiation-deprotonation conducts the brake function and mimics the antilock braking system (ABS) of vehicles.