J-type aggregation of a simple merocyanine skeleton: Spectral features and structure of 4-amino-6-oxopyrimidine

Kenta Goto, Rieko Omae, Minoru Yamaji, Teruo Shinmyozu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The absorption and fluorescence spectral properties of 4-amino-6-oxopyrimidine (1), which has a simple streptopolymethine merocyanine skeleton, clearly showed that the molecule 1 formed the aggregate 1n, and showed an exciton band, appearing at an absorption of 350 nm due to the red-shifted HOMO-LUMO transition. Upon light irradiation of the exciton band, a fluorescence band at 398 nm (ΦFL = 0.10) was observed, and its decay lifetimes were determined. Based on these spectral features, the aggregated 1n was found to be formed by J-type aggregation. The molecular orientation 1 in the crystal was revealed as being both parallel π-π stacking and hydrogen bonding chains.

Original languageEnglish
Pages (from-to)92-96
Number of pages5
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume194
Issue number1
DOIs
Publication statusPublished - Feb 5 2008

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musculoskeletal system
Excitons
Agglomeration
Fluorescence
Molecular orientation
Electron transitions
excitons
fluorescence
Hydrogen bonds
Irradiation
Crystals
Molecules
life (durability)
irradiation
decay
hydrogen
crystals
LDS 751
merocyanine
molecules

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

Cite this

J-type aggregation of a simple merocyanine skeleton : Spectral features and structure of 4-amino-6-oxopyrimidine. / Goto, Kenta; Omae, Rieko; Yamaji, Minoru; Shinmyozu, Teruo.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 194, No. 1, 05.02.2008, p. 92-96.

Research output: Contribution to journalArticle

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