Fabrication of fluorescent nanoparticles of dendronized perylenediimide by laser ablation in water
Fabrication of fluorescent nanoparticles of dendronized perylenediimide by laser ablation in water
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DOI：
10.1007/s00339-008-4661-5
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发表时间：
2008-06
期刊：
影响因子：
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通讯作者：
R. Yasukuni;T. Asahi;T. Sugiyama;Hiroshi Masuhara;Hiroshi Masuhara;Michel Sliwa;Johan Hofkens;F. Schryver;M. Auweraer;A. Herrmann;K. Müllen
中科院分区：
文献类型：
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作者：
R. Yasukuni;T. Asahi;T. Sugiyama;Hiroshi Masuhara;Hiroshi Masuhara;Michel Sliwa;Johan Hofkens;F. Schryver;M. Auweraer;A. Herrmann;K. Müllen
通过纳秒激光烧蚀分散在水中的微米级树枝状聚酰亚胺粉末，制备了粒径约为300 nm的高荧光有机纳米粒子。纳米胶体溶液的荧光量子产率为0.58。吸收光谱和发射光谱研究表明，聚二亚胺发色团侧边的大体积树枝状基团有效地抑制了纳米颗粒中发色分子间的相互作用。对几个单纳米粒子的荧光测量表明，所制备的纳米粒子足够明亮和光稳定，是一种非常有用的单粒子荧光研究探针。
Highly fluorescent organic nanoparticles with size of about 300 nm were prepared by nanosecond laser ablation of micrometer-sized powder of dendronized perylenediimide dispersed in water. The nanoparticle colloidal solution provided a fluorescence quantum yield of 0.58. The absorption and emission spectral studies demonstrated that the bulky dendron groups at the side bays of perylenediimide chromophore efficiently suppress the interchromophoric interactions in the nanoparticles. Fluorescence measurement on several single nanoparticles underlines that the prepared nanoparticles are bright and photo-stable enough to be a useful probe for single particle fluorescence investigation.