Characterization and structure of side-on azo copolymers in Langmuir-Blodgett films

Jian Jin, Lin Song Li, Yan Jie Zhang, Yan Qing Tian, Shimei Jiang, Yingying Zhao, Yubai Bai, Tie Jin Li

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Three different azobenzene derivatives, namely, 2-(6-methacryloxyhexyloxy)-4-hexyloxy-4′-hexyloxyazobenzene (A1) and poly{6-[5-hexyloxy-2-(4-hexyloxypheny)azophenyloxy]hexyl methacrylate}x-co-{2-hydroxyethyl methacrylate}y, (A2, x = 0.8, y = 0.2), and (A3, x = 0.2. y = 0.8), have been synthesized to study the characterization of Langmuir monolayers at the air-water interface and the aggregation and orientation of Langmuir-Blodgett (LB) films on a solid substrate. The surface pressure-area isotherms showed that they could form well-defined condensed-type monolayers, with A1 and A2 undergoing conformational transition. The monolayers of A1 and A3 could be deposited onto substrate at 20 mN/m at 20 °C with a near unity transfer ratio. The polarized Fourier transform infrared and polarized UV-vis spectra revealed that LB films of A1 and A3 on substrates had in-plane orientation with the long axis of azobenzene moiety exhibiting a large tilt angle (42° and 35°, respectively) with respect to the substrate normal. The UV-vis spectra of A1 and A3 gave us information that A1 and A3 formed J-aggregate both in solution and in LB films.

Original languageEnglish (US)
Pages (from-to)5231-5236
Number of pages6
JournalLangmuir
Volume14
Issue number18
StatePublished - Sep 1 1998
Externally publishedYes

Fingerprint

Langmuir Blodgett films
Langmuir-Blodgett films
copolymers
Copolymers
Monolayers
Azobenzene
Substrates
monomolecular films
Isotherms
unity
Fourier transforms
isotherms
Agglomeration
Infrared radiation
Derivatives
Water
air
Air
water
azobenzene

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Jin, J., Li, L. S., Zhang, Y. J., Tian, Y. Q., Jiang, S., Zhao, Y., ... Li, T. J. (1998). Characterization and structure of side-on azo copolymers in Langmuir-Blodgett films. Langmuir, 14(18), 5231-5236.

Characterization and structure of side-on azo copolymers in Langmuir-Blodgett films. / Jin, Jian; Li, Lin Song; Zhang, Yan Jie; Tian, Yan Qing; Jiang, Shimei; Zhao, Yingying; Bai, Yubai; Li, Tie Jin.

In: Langmuir, Vol. 14, No. 18, 01.09.1998, p. 5231-5236.

Research output: Contribution to journalArticle

Jin, J, Li, LS, Zhang, YJ, Tian, YQ, Jiang, S, Zhao, Y, Bai, Y & Li, TJ 1998, 'Characterization and structure of side-on azo copolymers in Langmuir-Blodgett films', Langmuir, vol. 14, no. 18, pp. 5231-5236.
Jin J, Li LS, Zhang YJ, Tian YQ, Jiang S, Zhao Y et al. Characterization and structure of side-on azo copolymers in Langmuir-Blodgett films. Langmuir. 1998 Sep 1;14(18):5231-5236.
Jin, Jian ; Li, Lin Song ; Zhang, Yan Jie ; Tian, Yan Qing ; Jiang, Shimei ; Zhao, Yingying ; Bai, Yubai ; Li, Tie Jin. / Characterization and structure of side-on azo copolymers in Langmuir-Blodgett films. In: Langmuir. 1998 ; Vol. 14, No. 18. pp. 5231-5236.
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