Ipe, Binil Itty ; George Thomas, K. ; Barazzouk, Said ; Hotchandani, Surat ; Kamat, Prashant V. (2002) Photoinduced charge separation in a fluorophore-gold nanoassembly The Journal of Physical Chemistry B, 106 (1). pp. 18-21. ISSN 1089-5647
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp0134695
Related URL: http://dx.doi.org/10.1021/jp0134695
Abstract
We report the first spectroscopic demonstration of direct electron transfer between a gold nanoparticle and a surface-bound fluorophore induced by pulsed laser irradiation. Binding of pyrene thiol directly to the gold nanoparticle results in quenching of its singlet excited state. The suppression of S1-T1 intersystem crossing process as well as the formation of pyrene radical cation confirm the excited-state interaction between the metal nanoparticle and the surface-bound fluorophore. The charge separation is sustained for several microseconds before undergoing recombination.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 51410 |
| Deposited On: | 28 Jul 2011 11:44 |
| Last Modified: | 28 Jul 2011 11:44 |
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