抄録
Mesoscopic properties of water-insoluble tetrakis(4-methoxyphenyl) porphyrin J-aggregate in thin film have been investigated by time-resolved scanning near-field optical microscopy. The film was found to be composed of planar microcrystallines with lengths of a few micrometers, widths of ∼100 nm, and ∼20 nm heights. The transmittance spectra are site-specific. This observation might reflect inhomogeneity of the sample, and is related to the broad J-bands compared to those of tetrakis(4-sulfonatophenyl)porphyrin. Excited-state lifetimes, obtained from pump-probe measurements in small domains, were ranging from 10 to 50 ps that are of the same order with the far-field results.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 368-375 |
| ページ数 | 8 |
| ジャーナル | Chemical Physics Letters |
| 巻 | 381 |
| 発行部数 | 3-4 |
| DOI | |
| 出版物ステータス | Published - 2003 11 14 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Spectroscopy
- Atomic and Molecular Physics, and Optics
これを引用
Spectral inhomogeneities and spatially resolved dynamics in porphyrin J-aggregate studied in the near-field. / Nagahara, Tetsuhiko; Imura, Kohei; Okamoto, Hiromi.
：: Chemical Physics Letters, 巻 381, 番号 3-4, 14.11.2003, p. 368-375.研究成果: Article
}
TY - JOUR
T1 - Spectral inhomogeneities and spatially resolved dynamics in porphyrin J-aggregate studied in the near-field
AU - Nagahara, Tetsuhiko
AU - Imura, Kohei
AU - Okamoto, Hiromi
PY - 2003/11/14
Y1 - 2003/11/14
N2 - Mesoscopic properties of water-insoluble tetrakis(4-methoxyphenyl) porphyrin J-aggregate in thin film have been investigated by time-resolved scanning near-field optical microscopy. The film was found to be composed of planar microcrystallines with lengths of a few micrometers, widths of ∼100 nm, and ∼20 nm heights. The transmittance spectra are site-specific. This observation might reflect inhomogeneity of the sample, and is related to the broad J-bands compared to those of tetrakis(4-sulfonatophenyl)porphyrin. Excited-state lifetimes, obtained from pump-probe measurements in small domains, were ranging from 10 to 50 ps that are of the same order with the far-field results.
AB - Mesoscopic properties of water-insoluble tetrakis(4-methoxyphenyl) porphyrin J-aggregate in thin film have been investigated by time-resolved scanning near-field optical microscopy. The film was found to be composed of planar microcrystallines with lengths of a few micrometers, widths of ∼100 nm, and ∼20 nm heights. The transmittance spectra are site-specific. This observation might reflect inhomogeneity of the sample, and is related to the broad J-bands compared to those of tetrakis(4-sulfonatophenyl)porphyrin. Excited-state lifetimes, obtained from pump-probe measurements in small domains, were ranging from 10 to 50 ps that are of the same order with the far-field results.
UR - http://www.scopus.com/inward/record.url?scp=0242426446&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0242426446&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2003.09.051
DO - 10.1016/j.cplett.2003.09.051
M3 - Article
AN - SCOPUS:0242426446
VL - 381
SP - 368
EP - 375
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 3-4
ER -