Self-condensed nanoparticles of oligofluorenes with water-soluble side chains
Self-condensed nanoparticles of oligofluorenes with water-soluble side chains
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DOI：
10.1021/ja063056n
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发表时间：
2006-07-19
影响因子：
15
通讯作者：
Tagawa, Seiichi
中科院分区：
文献类型：
--
作者：
Koizumi, Yoshiko;Seki, Shu;Tagawa, Seiichi
两亲性芴三聚体在溶剂混合物中发生自缩合，得到具有20 - 100 nm的受控半径的纯“绿色”荧光纳米颗粒。绿色荧光的起源归因于通过激发纳米颗粒中聚集的二聚体结构而不是酮缺陷的受激准分子发射。本研究还表明，从低聚芴聚集体的排放光谱调谐的可能性。
Self-condensation of the amphiphilic fluorene trimer occurs in the solvent mixture, giving pure “green” fluorescent nanoparticles with controlled radii of 20−100 nm. The origin of the green fluorescence is attributed to the excimer emission via excitation of aggregated dimer structures in the nanoparticles rather than the keto-defects. The present study also suggests the possibility of spectral tuning of emissions from oligofluorene aggregates.