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- W1978504098 abstract "The interactions of the silver nanoparticles with 2-(4′-N,N-dimethylaminophenyl)benzimidazole and its nitrogen substituted analogues, 2-(4′-N,N-dimethylaminophenyl)pyridoimidazoles are investigated by absorption, steady-state and time resolved fluorescence, field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM) techniques. The surface plasmon resonance band, the FESEM and the TEM images of the particles suggest that the fluorophores can stabilize the nanoparticles even in the absence of any other stabilizing agent. On the other hand, in the absence of fluorophores the nanoparticles are unstable and coagulate. In contrary to the earlier literature reports that interactions of nanoparticles with intramolecular charge transfer (ICT) or twisted intramolecular charge transfer (TICT) species quenches their fluorescence, to the best of our knowledge, the first ever formation of TICT state by interactions of nanoparticles with the fluorophores is observed. The formation of TICT state in 2-(4′-N,N-dimethylaminophenyl)pyridoimidazoles results in dual emission. The TICT emissions from the nanoparticle-fluorophore complexes are weak. But the emissions become prominent upon complexation with β-cyclodextrin." @default.
- W1978504098 created "2016-06-24" @default.
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- W1978504098 date "2015-04-01" @default.
- W1978504098 modified "2023-09-24" @default.
- W1978504098 title "Dual emission from 2-(4′-N,N-dimethylaminophenyl)pyridoimidazole–nanoparticle composite: Effect of β-cyclodextrin" @default.
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- W1978504098 doi "https://doi.org/10.1016/j.jcis.2014.11.049" @default.
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