DIRECT MEASUREMENT OF SURFACE FORCES BETWEEN MONOLAYERS OF ANCHORED POLY(L-GLUTAMIC ACID)

被引：27
作者：
ABE, T
KURIHARA, K
HIGASHI, N
NIWA, M
机构：
[1] NAGOYA UNIV, SCH ENGN, DEPT APPL PHYS, CHIKUSA KU, NAGOYA, AICHI 46401, JAPAN
[2] DOSHISHA UNIV, FAC ENGN, DEPT MOLEC SCI & TECHNOL, KYOTO 61003, JAPAN
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 07期
关键词：
D O I：
10.1021/j100007a003
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Interactions between apposed poly(L-glutamic acid) monolayers in water were investigated by direct surface force measurements. The average degree of polymerization was 21. Surface force profiles consisted of a long-range electrostatic repulsion and a short-range steric repulsion. Secondary structures of the polypeptide were found to determine the short-range steric repulsion. The elastic compressibility moduli of the polypeptide monolayers were obtained to be 5.6 +/- 2.2 MPa for the beta(2)-structure-rich layer and 0.2 +/- 0.1 MPa for the layer of ionized extended chains.
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页码：1820 / 1823
页数：4
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