A Light-Gated Molecular Brake with Antilock and Fluorescence Turn-On Alarm Functions: Application of Singlet-State Adiabatic Cis 鈫?Trans Photoisomerization
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- 作者：Wei-Ting Sun ; Guan-Jhih Huang ; Shou-Ling Huang ; Ying-Chih Lin ; Jye-Shane Yang
- 刊名：Journal of Organic Chemistry
- 出版年：2014
- 出版时间：July 3, 2014
- 年：2014
- 卷：79
- 期：13
- 页码：6321-6325
- 全文大小：291K
- ISSN：1520-6904
文摘
A light-gated molecular brake that displays both high braking power (107) and high switching power (74%) is reported. The lower rate for brake-on than for brake-off switching of the pentiptycene rotor mimics the function of an antilock braking system (ABS) for vehicles on a loose surface. The brake is also armed with a fluorescence turn-on alarm for accidental deactivation of the ABS function by acids. All of these features are associated with the highly efficient singlet-state adiabatic cis 鈫?trans photoisomerization of the phenylstilbene chromophore.