### 不含亲水基团的偶氮苯衍生物L-B膜的制备和性质研究

1. 山东大学胶体与界面化学研究所;中国科学院感光化学研究所
• 出版日期:1992-08-15 发布日期:1992-08-15

### Studies on the preparation and properties of L-B films formed from azobenzene derivative without hydrophilic groups

FENG XUSHENG;YIN BENHUA;WANG LEI;YANG KONGZHANG;ZHANG BAOWEN;WU SHIKANG;CAO YI

• Online:1992-08-15 Published:1992-08-15

The synthesis of 4-(N-hexadecylamino)azobenzene is described. This compound was characterized by elemental anal. and 1H NMR. Mixed monolayers with arachidic acid were prepared and deposited on hydrophobic optical glass or quartz slides. The UV-visible spectra of solns. and LB (Langmuir-Blodgett) films exhibit absorption max. at 396 and 388.5 nm, resp. The small blue shift indicates H-aggregate formation in the LB film. Absorbance increases as the no. of layers increases, but the peak position is unchanged, confirming the absence of mol. aggregates between adjacent layers and the good vertical uniformity of successive monolayers. The orientation of the azobenzene chromophores in the LB films was examined by using polarized light absorbance measurements. The diffraction patterns were determine and the Bragg peaks assigned (lattice spacing 5.49 nm). The LB films are built up into ordered multilayer films with periodic structure.