Optimal deposition condition of chlorophyll a Langmuir-Blodgett film

被引：8
|
作者：
Nam, YS [1 ]
Kim, JM [1 ]
Choi, JW [1 ]
Lee, WH [1 ]
机构：
[1] Sogang Univ, Dept Chem & Biomol Engn, Seoul 121742, South Korea
来源：
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2004年 / 24卷 / 1-2期
关键词：
chlorophyll a; Langmuir-Blodgett (LB); pi-a isotherm; STM;
D O I：
10.1016/j.msec.2003.09.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The optimal deposition condition of chlorophyll a (Chl a) Langmuir-Blodgett (LB) film were investigated based on pi-a isotherms, absorption spectrum and scanning tunneling microscopy (STM) observation. The pi-a isotherms of Chl a LB film at various air temperatures and subphase pHs were obtained. Optimum temperature and pH for dense packing of Chl a LB layers are 25 degreesC and 7.0, respectively. The formation of J- and H-aggregations of the ordered chlorophyll a molecules was confirmed by absorption spectrum measurements. The well-ordered structure of Chl a LB layer was observed by STM. Thus, the densely packed Chl a LB layer could be fabricated by the proposed optimal deposition condition. (C) 2003 Elsevier B.V. All rights reserved.
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页码：35 / 38
页数：4
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