异构化
加合物
氢键
化学
接受者
光化学
热稳定性
烯醇
热的
分子
催化作用
有机化学
热力学
凝聚态物理
物理
作者
Neil Mallo,Arnaud Tron,Joakim Andréasson,Jason B. Harper,Lorrie Jacob,Nathan D. McClenaghan,Gediminas Jonušauskas,Jonathon E. Beves
出处
期刊:ChemPhotoChem
[Wiley]
日期:2020-01-29
卷期号:4 (6): 407-412
被引量:26
标识
DOI:10.1002/cptc.201900295
摘要
Abstract The binding of donor‐acceptor Stenhouse adducts (DASAs) bearing hydrogen‐bond recognition groups by Hamilton‐type receptors significantly influenced their photoswitching properties by altering thermal barriers to isomerization. The thermal barrier between the most stable linear isomer and the photogenerated isomer is lowered on binding to a receptor, and this barrier is crucial for switching properties. The thermal isomerization was shown to proceed via a stepwise linear‐ enol ‐ keto mechanism in DMSO where the tautomerisation barrier is within 2 kJ ⋅ mol −1 of that of the rate‐determining step, which may be important for analyzing switching properties.
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