Single molecule study of Rhodamine/ATO nanoparticle junctions

Wan-Hee Goh; Jianchang Guo; Rui Yuan; Tianquan Lian

doi:10.1117/12.618690

18 August 2005 Single molecule study of Rhodamine/ATO nanoparticle junctions

Wan-Hee Goh, Jianchang Guo, Rui Yuan, Tianquan Lian

Proceedings Volume 5929, Physical Chemistry of Interfaces and Nanomaterials IV; 592906 (2005) https://doi.org/10.1117/12.618690
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Single rhodamine B (RhB) molecule-Sb:SnO₂(ATO) nanoparticle junctions were studied using two-photon excitation single molecule fluorescence spectroscopy. For each molecule-nanoparticle junction, fluorescence decay of RhB was found to be single exponential, indicating a static heterogeneous distribution of junction properties. The measured fluorescence lifetime is shorter than RhB on inert substrates but longer than that expected on ATO based on ensemble averaged electron transfer rates. Possible origins for the shorten single molecule lifetimes and distribution are discussed.

Citation Download Citation

Wan-Hee Goh, Jianchang Guo, Rui Yuan, and Tianquan Lian "Single molecule study of Rhodamine/ATO nanoparticle junctions", Proc. SPIE 5929, Physical Chemistry of Interfaces and Nanomaterials IV, 592906 (18 August 2005); https://doi.org/10.1117/12.618690

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