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[Structural characterization of copper-phthalocyanine thin solid films by FTIR spectroscopy]
1Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|April 1, 1997
Summary
The structure of copper phthalocyanine (CuPc) thin films was analyzed using spectroscopy. LB films show ordered hydrocarbon chains, while sublimed films exhibit molecular disorder.
Area of Science:
- Materials Science
- Spectroscopy
- Thin Film Analysis
Context:
- Characterization of tris-(2,4-di-t-amylphenoxy)-(8-quinolinoxy) copper phthalocyanine (CuPc) thin solid films.
- Utilizing Fourier transform infrared (FTIR) transmission, polarized transmission, and reflection absorption (RA) spectroscopy.
Purpose:
- To elucidate the structural arrangements within Langmuir-Blodgett (LB) and sublimed CuPc thin films.
- To investigate the molecular orientation and packing in different film deposition methods.
Summary:
- In LB films, CuPc hydrocarbon chains exhibit hexagonal or pseudohexagonal subcell packing.
- The CH2 asymmetric vibrational vector is oriented relative to the substrate surface.
- RA spectroscopy differentiates the two CH2 stretching modes of the benzene cycle in LB films.
- Sublimed CuPc films demonstrate a disordered molecular arrangement.
Impact:
- Provides insights into structure-property relationships in copper phthalocyanine thin films.
- Highlights the influence of deposition technique on molecular ordering.
- Demonstrates the utility of spectroscopic methods for thin film characterization.