Abstract

Experimental values of fluorescence quantum yield, phosphorescence quantum yield, and phosphorescence lifetime were acquired at temperatures from 23° to –180°C for the protonated form of benzo(<i>f</i>)quinoline adsorbed on filter paper. From the experimental values, triplet formation efficiencies, rate constants for phosphorescence, and rate constants for the radiationless transition from the triplet state were calculated. The results showed the various interrelationships of the solid-surface radiative and nonradiative processes. In addition, the results indicated that the modulus of the solid matrix is an important factor in enhancing phosphorescence quantum yield.

Room temperature phosphorescence from Si-doped-CD-based composite materials with long lifetimes and high stability

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Lifetime-tunable green room temperature phosphorescence of carbon dots by the multi-step modification

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