Infrared spectroscopic study on the dye containing LB films

Yoshiaki Hirano, Shin Ichi Morita, Yasuhiro F. Miura, Michio Sugi

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


We have studied the structures of the blue-shifted H- and the red-shifted J-bands formed in the mixed Langmuir-Blodgett (LB) films of the merocyanine dye (MS)-arachidic acid (C20)-n-octadecane (AL18) with the molar mixing ratio [MS]:[C20]:[AL18]=1:2:x (0≦x≦5). The mobility of the alkyl chain of MS has been investigated as a function of the molar mixing ratio x by means of infrared spectroscopy. The results have indicated that the J-aggregate is accompanied by the thermal motion of the alkyl chain of MS, while the H-aggregate is accompanied by the highly packed state of the alkyl chains of MS and deuterated AL18 (AL 18-d).

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalThin Solid Films
Publication statusPublished - 2003 Aug 22
EventThe 5th International Conference on Nano-Molecular Electronics - Kobe, Japan
Duration: 2002 Dec 102002 Dec 12


  • H-aggregate
  • Infrared spectroscopy
  • LB films
  • Merocyanine dye
  • Ternary system
  • Thermal mobility


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