期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 138, 期 42, 页码 13960-13966出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b07434
关键词
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资金
- National Science Foundation (MRSEC program) [DMR 1121053]
- California NanoSystems Institute (CNSI) Challenge Grant Program
- National Science Foundation
A class of tunable visible and near-infrared donor acceptor Stenhouse adduct (DASA) photoswitches were efficiently synthesized in two to four steps from commercially available starting materials with minimal purification. Using either Meldrum's or barbituric acid acceptors in combination with aniline-based donors, an absorption range spanning from 450 to 750 nm is obtained. Additionally, photoisomerization results in complete decoloration for all adducts, yielding fully transparent, colorless solutions and films. Detailed investigations using density functional theory, nuclear magnetic resonance, and visible absorption spectroscopies provide valuable insight into the unique structure property relationships for this novel class of photoswitches. As a final demonstration, selective photochromism is accomplished in a variety of solvents and polymer matrices, a significant advantage for applications of this new generation of DASAs.
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