THERMODYNAMIC STUDY OF LANGMUIR ANTIBODY FILMS FOR APPLICATION TO IMMUNOSENSORS

被引:37
作者
AHLUWALIA, A [1 ]
DEROSSI, D [1 ]
MONICI, M [1 ]
SCHIRONE, A [1 ]
机构
[1] ENTE NAZL ENERGIA ATOM,CTR RIC ENERGIA AMBIENTE,I-19100 LA SPEZIA,ITALY
关键词
LANGMUIR-BLODGETT FILMS; IMMUNOGLOBULIN-G; TOTAL INTERNAL REFLECTION FLUORESCENCE; IMMUNOSENSOR;
D O I
10.1016/0956-5663(91)87037-C
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
The thermodynamic functions, compressibility, entropy and free energy of desorption have been derived from a set of pi-A isotherms of human immunoglobulin G films at an air-water interface. Criteria for optimum filmlift conditions have been obtained from an analysis of these functions. By the application of a basic model, a picture of the desorption behaviour of segments of the antibodies has also been constructed. The results of this study have been used to estimate the theoretical sensing limit of a TIRF based immunosensor.
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页码:133 / 141
页数:9
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