Title of article
Excited-state proton transfer from pyranine to acetate in methanol
Author/Authors
Bhattacharyya، Kankan نويسنده , , KUMAR MONDAL,، SUDIP نويسنده , , GHOSH، SUBHADIP نويسنده , , SAHU، KALYANASIS نويسنده , , SEN، PRATIK نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
6
From page
71
To page
76
Abstract
Excited-state proton transfer (ESPT) of pyranine (8-hydroxypyrene-1,3,6-trisulphonate, HPTS) to acetate in methanol has been studied by steady-state and time-resolved fluorescence spectroscopy. The rate constant of direct proton transfer from pyranine to acetate (k1) is calculated to be ~1 × 10^ 9 M^ –1 s^ –1 . This is slower by about two orders of magnitude than that in bulk water (8 × 10 ^10 M ^–1 s ^–1 ) at 4 M acetate.
Keywords
pyranine , Fluorescence spectroscopy , direct proton transfer , Excited-state proton transfer
Journal title
Journal of Chemical Sciences
Serial Year
2007
Journal title
Journal of Chemical Sciences
Record number
121812
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