Abstract
The femtosecond fluorescence dynamics of zinc biphenylporphine (ZnBPP) were investigated in solution and in two solid-state environments - ZnBPP/glass and ZnBPP/TiO2 - with S2 excitation (λex = 410 nm and λem = 630 nm). Our results indicate that the transient in solution involves a persistent component that becomes completely quenched in thin-film samples; for solid films at least three decay coefficients are required to fit the transients. For ZnBPP/TiO2 films, the fluorescence was quenched significantly through J-type aggregation and interfacial electron transfer (IET) through space. Photocurrent measurements were also performed to confirm the existence of IET through space between ZnBPP molecules and TiO2 nanoparticles.
| Original language | English |
|---|---|
| Pages (from-to) | 452-456 |
| Number of pages | 5 |
| Journal | Chemical Physics Letters |
| Volume | 432 |
| Issue number | 4-6 |
| DOIs | |
| Publication status | Published - 2006 Dec 11 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Luo, L., Chang, C. W., Lin, C. Y., & Diau, E. W. G. (2006). Femtosecond fluorescence dynamics of zinc biphenylporphine in nanocrystalline TiO2 films: Evidence for interfacial electron transfer through space. Chemical Physics Letters, 432(4-6), 452-456. https://doi.org/10.1016/j.cplett.2006.10.120