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

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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Veröffentlicht in:Angewandte Chemie International Edition 2002-03, Vol.41 (6), p.962-965
Hauptverfasser: Fu, Hongbing, Loo, B. H., Xiao, Debao, Xie, Ruiming, Ji, Xuehai, Yao, Jiannian, Zhang, Baowen, Zhang, Lianqi
Format: Artikel
Sprache:eng
Schlagworte:
charge transfer
fluorescence
nanostructures
photochemistry
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Zusammenfassung: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.
ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20020315)41:6<962::AID-ANIE962>3.0.CO;2-9