This work was supported in part by an NSF-CAREER award (N.A.K.), NSF-Biophotonics (N.A.K.), AFOSR (N.A.K.), the University of Michigan (N.A.K.), and Ohio University (A.O.G.).
Nanoparticle Assemblies with Molecular Springs: A Nanoscale Thermometer†
Article first published online: 18 OCT 2005
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 44, Issue 45, pages 7439–7442, November 18, 2005
How to Cite
Lee, J., Govorov, A. O. and Kotov, N. A. (2005), Nanoparticle Assemblies with Molecular Springs: A Nanoscale Thermometer. Angew. Chem. Int. Ed., 44: 7439–7442. doi: 10.1002/anie.200501264
- Issue published online: 16 NOV 2005
- Article first published online: 18 OCT 2005
- Manuscript Revised: 22 JUL 2005
- Manuscript Received: 11 APR 2005
- excited states;
- poly(ethylene glycol);
- thermal expansion
A temperature-dependent emission is observed for CdTe nanoparticles connected to Au nanoparticles by a flexible poly(ethyleneglycol) (PEG) link acting as a molecular spring (see picture). The extension of the PEG springs varies depending on the temperature, which causes variations in CdTe emission caused by plasmon–exciton interactions. A theoretical model of plasmon–exciton coupling explains the optical and thermal effects.