| A long-lived photoacid based upon a photochromic reaction. | |
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MedLine Citation:
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PMID: 21823603 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A visible-light activatable photoacid has been studied, which upon irradiation, changes from a weak acid, with a pKa of 7.8, to a strong acid, which achieves nearly complete proton dissociation. This process is reversible and the lifetime of the proton-dissociation state is ~70s. The long lifetime of the proton-dissociation state is due to a sequential intramolecular photochromic reaction. Using this photoacid, a pH change of 2.2 units has been achieved. In addition, we demonstrated that the photo-induced proton concentration can catalyze an esterification reaction, and greatly alter the volume of a pH-sensitive polymer. This work shows that acid-catalyzed and pH-sensitive processes can be photochemically controlled by using this type of photoacid. |
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Authors:
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Zheng Shi; Ping Peng; Daniel Strohecker; Yi Liao |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-8 |
Journal Detail:
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Title: Journal of the American Chemical Society Volume: - ISSN: 1520-5126 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503056 Medline TA: J Am Chem Soc Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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