Nonplasmonic Metal Particles as Excitation Energy Transfer Acceptors: an Unexpected Efficiency Revealed by Quantum Mechanics

被引：21

作者：

Munoz-Losa, Aurora ^{[1
]}

Vukovic, Sinisa ^{[1
,3
]}

Corni, Stefano ^{[2
]}

Mennucci, Benedetta ^{[1
]}

机构：

[1] Univ Pisa, Dept Chem & Ind Chem, I-56126 Pisa, Italy

[2] INFM CNR Natl Res Ctr NanoStruct & BioSyst Surfac, I-41100 Modena, Italy

[3] Lawrence Berkeley Natl Lab, Div Chem Sci, Gilman, CA 94720 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 37期

关键词：

EFFECTIVE CORE POTENTIALS; ENHANCED RAMAN-SCATTERING; NONRADIATIVE DECAY-RATES; GOLD NANOPARTICLES; MOLECULAR CALCULATIONS; IONIC-SOLUTIONS; FLUORESCENCE; ABSORPTION; LIFETIME; SPECTRA;

D O I：

10.1021/jp904366f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present a time-dependent density functional theory investigation of the excitation energy transfer (EET) between a typical chromophore (perylene diimide) and a small metal cluster (Au-20). Two different physical descriptions are tested for the metal: the real (nonplasmonic) cluster and a hypothetical nanoparticle characterized by a bulk gold dielectric response (which thus sustains surface plasmons). By comparing the results obtained for the same EET process with the two types of metal particles, we show that, surprisingly, nonplasmonic small metal clusters can be as intrinsically effective as plasmonic particles in EET, a finding that is also relevant for applications in several field ranging from analytical chemistry to nanoscience.

引用

页码：16364 / 16370

页数：7