Near-IR Luminescence of Monolayer-Protected Metal Clusters. Wang, G., Huang, T., Murray, R. W., Menard, L., & Nuzzo, R. G. Journal of the American Chemical Society, 127(3):812--813, January, 2005.
Near-IR Luminescence of Monolayer-Protected Metal Clusters [link]Paper  doi  abstract   bibtex   
Visible?near-IR luminescence spectra of gold MPCs that are similar, irrespective of the number of core atoms (all \textless2 nm diameter) and different monolayers, are reported. The luminescence can be quantitatively invoked by introducing polar ligands into nonpolar MPC monolayers and by galvanic exchange of metal atoms on the MPC core surface with different metals. The observed emissions are believed to result from surface-localized states that depend on both the core metal of the nanoparticle and the ligands attached to the metal surface.
@article{wang_near-ir_2005,
	title = {Near-{IR} {Luminescence} of {Monolayer}-{Protected} {Metal} {Clusters}},
	volume = {127},
	issn = {0002-7863},
	url = {http://dx.doi.org/10.1021/ja0452471},
	doi = {10.1021/ja0452471},
	abstract = {Visible?near-IR luminescence spectra of gold MPCs that are similar, irrespective of the number of core atoms (all {\textless}2 nm diameter) and different monolayers, are reported. The luminescence can be quantitatively invoked by introducing polar ligands into nonpolar MPC monolayers and by galvanic exchange of metal atoms on the MPC core surface with different metals. The observed emissions are believed to result from surface-localized states that depend on both the core metal of the nanoparticle and the ligands attached to the metal surface.},
	number = {3},
	urldate = {2013-07-27TZ},
	journal = {Journal of the American Chemical Society},
	author = {Wang, Gangli and Huang, Tao and Murray, Royce W. and Menard, Laurent and Nuzzo, Ralph G.},
	month = jan,
	year = {2005},
	pages = {812--813}
}

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