期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 137, 期 35, 页码 11282-11284出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b06218
关键词
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资金
- Air Force Office of Scientific Research [FP048956]
- National Science Foundation [DMR 1342940]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1342940] Funding Source: National Science Foundation
A metastable-state photoacid that can reversibly release a proton in PBS buffer (pH = 7.4) under visible light is reported. The design is based on the dual acid-base property and tautomerization of indazole. The quantum yield was as high as 0.73, and moderate light intensity (10(2) mu mol center dot m(2)center dot s(-1)) is sufficient for the photoreaction. Reversible pH change of 1.7 units was demonstrated using a 0.1 mM aqueous solution. This type of photoacid is promising for control of proton-transfer processes in physiological conditions and may find applications in biomedical areas.
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