2024-03-29T09:29:10Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00002504
2022-12-15T03:35:43Z
423:424:425
453:454
Time-resolved study of luminescence in highly luminescent disubstituted polyacetylene and its blend with poorly luminescent monosubstituted polyacetylene
Hidayat, Rahmat
Tatsuhara, Satoshi
Kim, Dong Wook
Ozaki, Masanori
Yoshino, Katsumi
Teraguchi, Masahiro
Masuda, Toshio
A highly luminescent disubstituted polyacetylene, poly(1-phenyl-2-p-n-butylphenylacetylene) (PDPA-nBu), and its blend with a poorly luminescent monosubstituted polyacetylene, poly(1-o-trimethylsilylphenylacetylen)(PPA-oSiMe3), are studied by time-resolved photoluminescence (PL) spectroscopy. In pure PDPA-nBu, PL intensity at short wavelength decays faster than that at long wavelength, whereas PL spectra exhibit a dynamic Stokes shift to longer wavelengths with time. In blends of PDPA-nBu/PPA-oSiMe3, only PL originating from PDPA-nBu is observed, without contribution from PPA-oSiMe3. The PL lifetime drastically decreases upon mixing a small amount of PPA-oSiMe3 in PDPA-nBu. The PL characteristics of pure PDPA-nBu and its blend with PPA-oSiMe3 are discussed in terms of lattice/vibrational relaxation of the excitonic state and exciton migration.
American Physical Society
2000-04
eng
journal article
VoR
http://hdl.handle.net/10191/24102
https://niigata-u.repo.nii.ac.jp/records/2504
http://doi.org/10.1103/physrevb.61.10167
AA11187113
1098-0121
Physical review. Third series. B, Condensed matter and materials physics
61
15
10167
10173
https://niigata-u.repo.nii.ac.jp/record/2504/files/61_15_10167-10173.pdf
application/pdf
105.8 kB
2019-07-29