Evidence and use of metal-chromophore interactions: luminescence dichroism of terthiophene-coated gold nanoparticles in polyethylene oriented films

被引:27
作者
Pucci, A
Tirelli, N
Willneff, EA
Schroeder, SLM
Galembeck, F
Ruggeri, G
机构
[1] Univ Manchester, Sch Pharm, Manchester M13 9PL, Lancs, England
[2] Univ Pisa, Dept Chem & Ind Chem, I-56126 Pisa, Italy
[3] INSTM, Pisa Res Unit, I-56126 Pisa, Italy
[4] Univ Manchester, Inst Sci & Technol, Dept Chem Engn, Manchester M60 1QD, Lancs, England
[5] Univ Manchester, Inst Sci & Technol, Mol Mat Ctr, Manchester M60 1QD, Lancs, England
[6] Univ Estadual Campinas, Inst Chem, BR-13084862 Campinas, SP, Brazil
关键词
D O I
10.1039/b409107h
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
Nanocomposites with unusual and anisotropic optical properties have been obtained through the dispersion of gold nanoparticles and gold-binding chromophores in a stretched polymer matrix (Ultra High Molecular Weight PolyEthylene, UHMWPE). Strongly dichroic terthiophene-based chromophores, previously used in anisotropic UHMWPE dispersions, were modified with a thiol group and used for the preparation of gold nanoparticles. We demonstrate that the electronic systems of the chromophores are coupled with the gold nanoparticles. For the first time, evidence is reported that the polarization of the absorbed radiation can be preserved during energy transfer between a chromophore and a metal particle.
引用
收藏
页码:3495 / 3502
页数:8
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