Generation of the displacement current by the transformation of J-aggregates in spreading monolayers of squarylium dye

✍ Scribed by Mitsumasa Iwamoto; Yutaka Majima; Fuminori Hirayama; Makoto Furuki; Lyong Sun Pu

• Book ID: 103032230
• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 443 KB
• Volume: 195
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(92)85908-s

✦ Synopsis

Maxwell displacement currents generated from monolayers of squarylium dye with propyl groups (SQ) and from mixed monolayers with arachidic acid were investigated during the course of monolayer compression in connection with the formation of Jaggregates in the monolayers. Abrupt changes in the generation of displacement current were observed for monolayers of SQ due to the transformation between two types of J-aggregates with different absorption spectra. In contrast, for mixed monolayers with arachidic acid which show no transition of J-aggregates, abrupt changes in the displacement current were not observed. It was concluded that displacement current measurement is effective in the detection of the transformation of the molecular arrangement in aggregates.