Ghosh, Sampa ; Ranjini, Arumugam Sri ; Pandey, Ravindra ; Das, Puspendu Kumar (2009) First hyperpolarizability of bacteriorhodopsin, retinal and related molecules revisited Chemical Physics Letters, 474 (4-6). pp. 307-310. ISSN 0009-2614
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.cplett.2009.04.067
Abstract
The previously reported β values of BR and retinal based chromophores were very high but subsequent measurements found them to be much less. We have found that the β values of these compounds do not vary so much with experimental conditions as with the method of analysis. Hyper-Rayleigh scattering measurements at 1543 and 1907 nm produce more realistic β values close to the intrinsic (static) hyperpolarizability, β0 which for BR is still very high (275 × 10-30 esu). The optical nonlinearity of BR arises entirely due to the protonated retinal Schiff Base (PRSB) which in its isolated form has the same intrinsic hyperpolarizability as that of the protein.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 86349 |
| Deposited On: | 10 Mar 2012 07:00 |
| Last Modified: | 10 Mar 2012 07:00 |
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