Photoinduced charge separation in a fluorophore-gold nanoassembly

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

Full text not available from this repository.

Official URL:

Related URL:


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

Repository Staff Only: item control page