Mondal, Sudip Kumar ; Ghosh, Subhadip ; Sahu, Kalyanasis ; Sen, Pratik ; Bhattacharyya, Kankan (2007) Excited-state proton transfer from pyranine to acetate in methanol Journal of Chemical Sciences, 119 (2). pp. 71-76. ISSN 0253-4134
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Official URL: http://www.ias.ac.in/chemsci/Pdf-Mar2007/71-76.pdf
Related URL: http://dx.doi.org/10.1007/s12039-007-0012-x
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 × 109 M-1 s-1. This is slower by about two orders of magnitude than that in bulk water (8 × 1010 M-1 s-1) at 4 M acetate.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Excited-state Proton Transfer; Pyranine; Fluorescence Spectroscopy; Direct Proton Transfer |
| ID Code: | 77133 |
| Deposited On: | 10 Jan 2012 05:54 |
| Last Modified: | 18 May 2016 20:32 |
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