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    Colorimetric transition process of polydiacetylene/mannoside derivative Langmuir-Schaefer film by binding Escherichia jm109

    Year: 2002

    Journal: Thin Solid Films 419 (2002) 194-198, 20111221

    Authors: L.G. Zhang, Y. Fan, B.L. Ma, X.Y. Xu, X.G. Kong, D.Z. Shen, Y.J. Li

    Organizations: aLaboratory of Excited State Processes, Changchun Institute of Optics Fine Mechanics and Physics, Changchun 130021, China bSchool of Basic Medicine, Norman Bethune University of Medical Sciences, Changchun 130021, China

    Colorimetric transition of α-Image-mannoside-hexadecyl (MC16)ypolymeric 10,12-pentacosadiynoic acid (PDA) Langmuir-Schaefer (LS) film caused by binding Escherichia coli jm109 to α-Image-mannoside-hexadecyl was investigated via UV-visible absorption spectra.The interfacial behaviors of MC16 and PDA mixture at the airywater interface exhibited a good miscibility.We demonstrated the dependence of the colorimetric response of MC16/polymeric PDA LS film on the incubation time in E. coli solution.Based on dynamical analysis of colorimetric transition caused by binding the bacterium to MC16, it was estimated that one E. coli could only bind two MC16 molecules.