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Determination method of mercaptan self-assembling dynamics

A measurement method and kinetic technology, applied in the direction of electrochemical variables of materials, etc., can solve the problems of complex and diverse characterization methods

Inactive Publication Date: 2015-02-18
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0005] Due to the microscopic nature of the molecular self-assembly process, the characterization methods are complex and diverse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Electrode pretreatment

[0017] First polish with sandpaper, then rinse with distilled water several times, and finally perform 5min low-power ultrasonic cleaning.

[0018] (2) Electrochemical treatment

[0019] The treated gold electrode was chemically cleaned to a stable cyclic voltammetry by cyclic voltammetry. Electrolyte: 0.5mol / L sulfuric acid solution. Change the electrolyte every 15 minutes.

[0020] (3) Select the stable potential interval of the redox diagram of the gold electrode, and scan in a 0.5 mol / L sulfuric acid solution to obtain the charge-discharge current diagram of the bare gold electrode.

[0021] (4) Rinse the electrode with distilled water and ethanol, and then immerse the electrode in the ethanol solution of mercaptan for 2 hours. The electrode was taken out, rinsed with ethanol and high-purity water respectively, transferred to the electrolytic cell for electrochemical test, and then calculated and plotted according to the data to obta...

Embodiment 2

[0022] Embodiment 2: change step (4) soaking time to be 3h, other steps are the same as embodiment 1.

Embodiment 3

[0023] Embodiment 3: change step (2) electrolyte concentration to 0.2mol / L.

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Abstract

The invention relates to a determination method of mercaptan self-assembling dynamics. According to the determination method, mercaptan self-assembling influence factors on a gold surface are mainly inspected; and the determination method comprises the following aspects of surface pretreatment, potential control, metal ion under-potential deposition, an assembling way and the like. The determination method has guidance meanings on discussing rapid control and reconstitution of a mercaptan single layer through the summary of the mercaptan self-assembling influence factors on the gold surface.

Description

technical field [0001] The invention relates to a method for measuring kinetics of mercaptan self-assembly, in particular to measuring kinetic parameters through the principle and preparation method of a self-assembled film by using an electrochemical research method. Background technique [0002] Molecular self-assembled films are highly stable and orderly, and are typical systems for studying surface and interface phenomena at the molecular level. Self-assembled membrane molecules are arranged in an orderly manner, with few defects, and are easy to study with modern physical and chemical characterization techniques. The controllability of the self-assembled film provides a very large degree of freedom in the design of the two-dimensional ordered molecular assembly system for investigating the special interactions in the interface system and exploring the molecular structure. Research on the structure and function of self-assembled membranes is also the basis for investiga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
Inventor 曲玉宁方升于育才
Owner TIANJIN POLYTECHNIC UNIV
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