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 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Femtosecond fluorescence dynamics of zinc biphenylporphine in nanocrystalline TiO2 films : Evidence for interfacial electron transfer through space. / Luo, Liyang; Chang, Chih Wei; Lin, Ching Yao; Diau, Eric Wei Guang.
In: Chemical Physics Letters, Vol. 432, No. 4-6, 11.12.2006, p. 452-456.Research output: Contribution to journal › Article
TY - JOUR
T1 - Femtosecond fluorescence dynamics of zinc biphenylporphine in nanocrystalline TiO2 films
T2 - Evidence for interfacial electron transfer through space
AU - Luo, Liyang
AU - Chang, Chih Wei
AU - Lin, Ching Yao
AU - Diau, Eric Wei Guang
PY - 2006/12/11
Y1 - 2006/12/11
N2 - 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.
AB - 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.
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U2 - 10.1016/j.cplett.2006.10.120
DO - 10.1016/j.cplett.2006.10.120
M3 - Article
AN - SCOPUS:33845525423
VL - 432
SP - 452
EP - 456
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -