Mandal, Debabrata ; Pal, Samir Kumar ; Sukul, Dipankar ; Bhattacharyya, Kankan (1999) Photophysical processes of merocyanine 540 in solutions and in organized media Journal of Physical Chemistry A, 103 (49). pp. 8156-8159. ISSN 1089-5639
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp991506a?prev...
Related URL: http://dx.doi.org/10.1021/jp991506a
Abstract
Photophysical processes of merocyanine 540 (MC540) are studied using picosecond time-resolved emission spectroscopy. The nonradiative rate of MC540 increases from 0.32 × 109 s-1 in dioxane to 8.73 × 109 s-1 in water, i.e., nearly 27 times. This is attributed to the decrease in the barrier of photoisomerization with increase in polarity and the consequent increase in the rate of photoisomerization for MC540. The polarity-dependent isomerization is also shown to be the cause for the observed increase in emission intensity and lifetime of MC540 in aerosol-OT microemulsions and aqueous bovine serum albumin solutions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 5360 |
| Deposited On: | 18 Oct 2010 08:58 |
| Last Modified: | 11 May 2012 10:23 |
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