Tetrapyrazinoindoloporphyrazine Langmuir-Blodgett films
- Authors
- Kim, Jongmin; Jaung, Jae Yun; Ahn, Heejoon
- Issue Date
- Jun-2008
- Publisher
- POLYMER SOC KOREA
- Keywords
- arachidic acid; Langmuir-Blodgett; tetrapyrazinoindoloporphyrazine; transfer promoter
- Citation
- MACROMOLECULAR RESEARCH, v.16, no.4, pp.367 - 372
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- MACROMOLECULAR RESEARCH
- Volume
- 16
- Number
- 4
- Start Page
- 367
- End Page
- 372
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/178528
- DOI
- 10.1007/BF03218530
- ISSN
- 1598-5032
- Abstract
- We fabricated tetra(5-n-nonyl-8-tert-butyl-2,3-pyrazino[2,3-b]indolo)porphyrazinato copper(II) (Cu-Pc-C-8) Langmuir-Blodgett (LB) films. We further investigated the influence of arachidic acid (AA) as a transfer promoter, as well as the effect of dipping speed, on the deposition of the films on hydrophilic and hydrophobic substrates. In the case of pure Cu-Pc-C-8 LB deposition on a hydrophilic substrate, the transfer ratio was close to one for up-stroke depositions, but the previously deposited film was peeled off and re-spread onto water at down-stroke depositions. Whereas the stability of the Cu-Pc-C-8 LB films was not improved by AA addition on hydrophilic substrates, the deposition of Cu-Pc-C-8 was significantly improved by the presence of AA on a hydrophobic substrate. The AA-assisted deposition had transfer ratio of close to 1 and was essentially stable up to 10-layer depositions. Comparison of the UV-visible spectrum of a Cu-Pc-C-8/AA LB film with that of Cu-Pc-C-8/AA solution in dichloroethane revealed that the Soret and Q bands for the Cu-Pc-C-8/AA LB film were broadened and red-shifted due to the aggregation of phthalocyanines upon assembly in the LB film.
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