Singh, Anil K. ; Hota, Prasanta K. (2007) Ethenyl indoles as neutral hydrophobic fluorescence probes Journal of Physical Organic Chemistry, 20 (8). pp. 624-629. ISSN 0894-3230
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/poc.122...
Related URL: http://dx.doi.org/10.1002/poc.1222
Abstract
3-(4-Nitrophenylethenyl-E)-NH-indole (1), 3-(4-nitrophenyl ethenyl-E)-N-acetylindole (2), and 3-(4-nitrophenylethenyl-E)-N-benzenesulfonylindole (3) are relatively less fluorescent in organic solvents, with fluorescence quantum yield (φf) in the range of 0.002 to 0.066 depending on the solvent polarity. However, in bovine serum albumin (BSA)-phosphate buffer, the fluorescence of these compounds gets drastically enhanced with φf in the range of 0.21 to 0.67, depending on the substituent on the indolic nitrogen atom. Additionally, linear increase in the fluorescence intensity of 2 and 3 occurs on increasing the BSA concentration. These fluorescence properties together with the neutral, hydrophobic nature of these compounds make these fluorophores good fluorescence probe for studying the micropolarity of proteins like BSA and in general the ligand-protein interactions.
Item Type: | Article |
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Source: | Copyright of this article belongs to John Wiley and Sons. |
Keywords: | Serum Albumin; Ethenyl Indoles; Fluorescence; Binding Constant; Fluorescence Quenching |
ID Code: | 54103 |
Deposited On: | 11 Aug 2011 11:48 |
Last Modified: | 11 Aug 2011 11:48 |
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