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Bulky Counterions: Enhancing the Two-Photon Excited Fluorescence of Gold Nanoclusters.
- Source :
-
Chemphyschem : a European journal of chemical physics and physical chemistry [Chemphyschem] 2018 Jan 19; Vol. 19 (2), pp. 165-168. Date of Electronic Publication: 2017 Dec 20. - Publication Year :
- 2018
-
Abstract
- Increasing fluorescence quantum yields of ligand-protected gold nanoclusters has attracted wide research interest. The strategy consisting in using bulky counterions has been found to dramatically enhance the fluorescence. In this Communication, we push forward this concept to the nonlinear optical regime. We show that by an appropriate choice of bulky counterions and of solvent, a 30-fold increase in two-photon excited fluorescence (TPEF) signal at ≈600 nm for gold nanoclusters can be obtained. This would correspond to a TPEF cross-section in the range of 0.1 to 1 GM.<br /> (© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Details
- Language :
- English
- ISSN :
- 1439-7641
- Volume :
- 19
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Chemphyschem : a European journal of chemical physics and physical chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 29105296
- Full Text :
- https://doi.org/10.1002/cphc.201701186