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The importance of hydrogen bonded clusters in the stabilization of the intramolecular charge transfer state of 4,4'-diaminophenyl sulphone in alcohols and alcohol:acetonitrile mixtures

✍ Scribed by Shyh-Gang Su; John D. Simon

Book ID: 103027789
Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 626 KB
Volume: 132
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)80623-6

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✦ Synopsis

The formation of the twisted intramolecular charge transfer (TICT) state of 4,4'-diaminophenyl sulphone (APS) has been examined in hexanohacetonitrile mixtures. The TICT emission reveals wavelength dependent rise times which are sensitive to the alcohol concentration. Discernible wavelength-dependent rise times are observed for hexanol:acetonitrile mixtures above 1:2. Examination of the infrared O-H stretch for these solutions shows that above this ratio, hydrogen-bonded aggregates are formed. In addition, the emission dynamics of APS in neat hexanol are compared with those observed for 4,4'-dimethylaminophenyl sulphone (DMAPS) and 3,3'diaminophenylsulphone (3,3'-APS).

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