On the Langmuir-Blodgett transfer of copper tetra-tert-butyl phthalocyanine monolayers in the presence of arachidic acid

Ching Wen Sheu, Kuen Mo Lin, I. Hsun Ku, Chien Hsiang Chang, Yuh Lang Lee, Yu Min Yang, Jer Ru Maa

研究成果: Article

11 引文 斯高帕斯(Scopus)

摘要

This study investigated the influence of arachidic acid as a transfer promoter on the deposition of multilayer copper tetra-tert-butyl phthalocyanine (CuTTBPc) Langmuir-Blodgett (L-B) films on both hydrophilic glass and hydrophobic silanized-glass substrates. With the addition of arachidic acid in a CuTTBPc monolayer at the air/water interface, two transitions corresponding to monolayer collapse were observed in the surface pressure-area isotherm. However, the added arachidic acid had no effect on area relaxation of a CuTTBPc monolayer at 20 mN m-1. The up-stroke L-B transfer of a CuTTBPc monolayer at 20 mN m-1 onto a glass substrate was perfect with a transfer ratio of 1.0, but most of the deposited film respread onto the interface during the following down-stroke deposition. It appears that the addition of arachidic acid with a molar fraction of 0.5 caused insignificant influence on the continuous L-B deposition of CuTTBPc films on glass substrates. On a silanized-glass substrate, imperfect Y-type multilayer CuTTBPc L-B films could be fabricated with transfer ratios around 0.5. The presence of arachidic acid in a CuTTBPc monolayer may considerably improve the down-stroke first layer deposition with a transfer ratio close to one. Moreover, the following up-stroke deposition quality of the L-B films was strongly affected by the molar fraction of arachidic acid.

原文English
頁(從 - 到)81-88
頁數8
期刊Colloids and Surfaces A: Physicochemical and Engineering Aspects
207
發行號1-3
DOIs
出版狀態Published - 2002 七月 30

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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