期刊
CHEMPHYSCHEM
卷 13, 期 4, 页码 946-951出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201100788
关键词
dewetting; nanoparticles; photoluminescence; photothermal microscopy; surface chemistry
资金
- ERC
- Netherlands Organization for Scientific Research (NWO)
Organic nanoparticles made of a pushpull triarylamine dye with an average diameter of 60 nm, were prepared by reprecipitation. We study their photophysical properties by a combination of photothermal and fluorescence microscopy. Photothermal contrast provides a quantitative measure of the number of absorbers. The size of nanoparticles estimated from the absorption measurements was compared with sizes measured by AFM. Fluorescence and absorption microscopy provide quantum yield on the single-particle level as a function of excitation intensity. The quantum yield strongly decreases at high intensities because of singletsinglet or singlettriplet annihilation. We also report the formation of molecular thin layers and of labyrinth-shaped structures on glass substrates, presumably induced by dewetting.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据