Multiple Emissions from 1,3‐Diphenyl‐5‐pyrenyl‐2‐pyrazoline Nanoparticles: Evolution from Molecular to Nanoscale to Bulk Materials

Tunable, multiple emission is exhibited by nanoparticles of 1,3‐diphenyl‐5‐pyrenyl‐2‐pyrazoline (DPP; see picture), which ranges from near‐UV to green. Tuning could be effected by alteration of either the excitation wavelength or the nanoparticle size. In contrast, DPP in dilute solution only showed...

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Published inAngewandte Chemie International Edition Vol. 41; no. 6; pp. 962 - 965
Main Authors Fu, Hongbing, Loo, B. H., Xiao, Debao, Xie, Ruiming, Ji, Xuehai, Yao, Jiannian, Zhang, Baowen, Zhang, Lianqi
Format Journal Article
LanguageEnglish
Published Weinheim WILEY‐VCH Verlag GmbH 15.03.2002
Subjects
charge transfer
fluorescence
nanostructures
photochemistry
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Summary:Tunable, multiple emission is exhibited by nanoparticles of 1,3‐diphenyl‐5‐pyrenyl‐2‐pyrazoline (DPP; see picture), which ranges from near‐UV to green. Tuning could be effected by alteration of either the excitation wavelength or the nanoparticle size. In contrast, DPP in dilute solution only showed the emission characteristics of the pyrene chromophore. In bulk crystals, only the emission characteristics of the pyrazoline chromophore were exhibited.
Bibliography:This research was supported in part by the National Natural Foundation of China, the National Research Fund for Fundamental Key Projects No. 973 (G19990330) and the Chinese Academy of Sciences.
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ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20020315)41:6<962::AID-ANIE962>3.0.CO;2-9