Surface studies of polyimide thin films via surface-enhanced Raman scattering and second harmonic generation

Jason J. Ge, Gi Xue, Fuming Li, Kevin W. McCreight, Shy Yeu Wang, Frank W. Harris, Stephen Z D Cheng, Xiaowei Zhuang, Seok Cheol Hong, Y. R. Shen

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Two polyimides having the same backbone chemical structure and different pendant side groups at the 2- and 2′-positions of the diamine, the six methylene units capped with 4-cyanobiphenyl end groups and trifluoromethyl, were synthesized (6FDA-6CBO and 6FDA-PFMB). Surface-enhanced Raman scattering and surface optical second harmonic generation measurements show that after rubbing the major change in 6FDA-PFMB surface appears in the orientation of the dianhydride, which was originally planar, but becomes tilted with respect to the surface plane. In the case of 6FDA-6CBO, rubbing also causes the originally planar 4-cyanobiphenyls to tilt away from the surface and assume an azimuthally anisotropic distribution.

Original languageEnglish
Pages (from-to)619-623
Number of pages5
JournalMacromolecular Rapid Communications
Volume19
Issue number12
Publication statusPublished - 1998 Dec 1
Externally publishedYes

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Harmonic generation
Polyimides
Raman scattering
Thin films
Diamines

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

Ge, J. J., Xue, G., Li, F., McCreight, K. W., Wang, S. Y., Harris, F. W., ... Shen, Y. R. (1998). Surface studies of polyimide thin films via surface-enhanced Raman scattering and second harmonic generation. Macromolecular Rapid Communications, 19(12), 619-623.

Surface studies of polyimide thin films via surface-enhanced Raman scattering and second harmonic generation. / Ge, Jason J.; Xue, Gi; Li, Fuming; McCreight, Kevin W.; Wang, Shy Yeu; Harris, Frank W.; Cheng, Stephen Z D; Zhuang, Xiaowei; Hong, Seok Cheol; Shen, Y. R.

In: Macromolecular Rapid Communications, Vol. 19, No. 12, 01.12.1998, p. 619-623.

Research output: Contribution to journalArticle

Ge, JJ, Xue, G, Li, F, McCreight, KW, Wang, SY, Harris, FW, Cheng, SZD, Zhuang, X, Hong, SC & Shen, YR 1998, 'Surface studies of polyimide thin films via surface-enhanced Raman scattering and second harmonic generation', Macromolecular Rapid Communications, vol. 19, no. 12, pp. 619-623.
Ge, Jason J. ; Xue, Gi ; Li, Fuming ; McCreight, Kevin W. ; Wang, Shy Yeu ; Harris, Frank W. ; Cheng, Stephen Z D ; Zhuang, Xiaowei ; Hong, Seok Cheol ; Shen, Y. R. / Surface studies of polyimide thin films via surface-enhanced Raman scattering and second harmonic generation. In: Macromolecular Rapid Communications. 1998 ; Vol. 19, No. 12. pp. 619-623.
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AU - Harris, Frank W.

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