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Controlling the Isomerization Rate of an Azo-BF2 Switch Using Aggregation

Author:
Qian, Hai, Wang, Yu-Ying, Guo, Dong-Sheng, Aprahamian, Ivan
Source:
Journal of the American Chemical Society 2017 v.139 no.3 pp. 1037-1040
ISSN:
1520-5126
Subject:
azo compounds, half life, isomerization, photochemistry, reaction mechanisms, synthesis
Abstract:
A novel visible-light activated azo-BF₂ switch possessing a phenanthridinyl π-system has been synthesized, and its switching properties have been characterized as a function of concentration. The switch self-aggregates through π–π interactions, and the degree of aggregation modulates the Z → E thermal isomerization rate. This property allows for the active tuning of the thermal relaxation half-life of the same switch from seconds to days.