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Jaebeom Lee, Alexander O. Govorov and Nicholas A. Kotov Nanoparticle Assemblies with Molecular Springs: A Nanoscale Thermometer Angewandte Chemie International Edition 44

Version of Record online: 18 OCT 2005 | DOI: 10.1002/anie.200501264

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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.

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