Spectral inhomogeneities and spatially resolved dynamics in porphyrin J-aggregate studied in the near-field

Tetsuhiko Nagahara, Kohei Imura, Hiromi Okamoto

研究成果: Article査読

33 被引用数 (Scopus)

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.

本文言語English
ページ(範囲)368-375
ページ数8
ジャーナルChemical Physics Letters
381
3-4
DOI
出版ステータスPublished - 2003 11 14
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

フィンガープリント 「Spectral inhomogeneities and spatially resolved dynamics in porphyrin J-aggregate studied in the near-field」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル