Acta Phys. -Chim. Sin. ›› 1997, Vol. 13 ›› Issue (10): 868-872.doi: 10.3866/PKU.WHXB19971002

• Communication • Previous Articles     Next Articles

Influence of End Alkyl Chain Length on the Structure of Self-assembled Monolayer of Azobenzene on Gold

Zhang Jin,Zhao Jiang,Zhang Hao-Li,Liu Zhong-Fan,Li Hu-Lin   

  1. Department of Chemistry,Lanzhou University,Lanzhou 730000;Centre for Intelligent Materials Research(CIMR),College of Chemistry and Molecular Engineering,Peking University,Beijing 100871
  • Received:1997-05-27 Revised:1997-08-14 Published:1997-10-15
  • Contact: Li Hu-Lin

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Abstract:

The end-group dominated molecular orientation in the azobenzene self-assembled monolayers (SAMs), CnAzoC2SH (n=1-4), on gold was evaluated for the first time by grazing incidence reflection absorption FTIR spectroscopy (RA-FTIR). All these azobenzene SAMs have highly-organized and closely-parked structures, with the molecule tilting away gradually from surface normal direction with the increase of end group alkyl length.

Key words: Azobenzene derivatives, Self-assembed monolayers, Reflection absorption FTIR spectroscopy, Molecular orientation