High throughput single molecule spectral imaging of photoactivated luminescent silver clusters on silver island films
Resource
Journal of Physical Chemistry C, 113(15), 5991-5997
Journal
The Journal of Physical Chemistry C
Pages
5991-5997
Date Issued
2009
Date
2009
Author(s)
Xiao, L.
He, Y.
Yeung, E. S.
Abstract
Real-time fluorescence spectra from photoactivated individual silver clusters on silver island film were obtained via inserting a transmission grating in the emission light path of an inverted microscope. The high throughput data collection ability allowed us to monitor photochemical dynamics of multiple silver clusters in two dimensions simultaneously and capture intermediates and rare events that can not be observed using traditional spectrometers. Neutral silver clusters were found to be the species that fluoresce on the film, and three major types of sliver clusters with emission maximums at 516, 530, and 550 nm were identified under the excitation of a 488 nm argon ion laser. In addition, randomly occurring events including reversible spectral shifts and abnormal fluorescence bursts from a few individual silver clusters were captured.
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Type
journal article
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