| abstract |
A method for coating the surface of a solid material with fine particles of a metal or a metal compound is provided. The method comprises the step of bringing a solid material into close contact with fine particles of a metal or a metal compound to which a compound having at least two mercapto groups is bonded, under light-shielding conditions or under the irradiation with light rays other than laser light rays. The method does not require the use of any specially designed device. It permits the immobilization of fine particles on the surface of a solid within an appropriate period of time, the immobilization thereof even in the environment in which any light cannot be used, the production of a desired fine particle-coated solid material at a low cost and the uniform coating of even a solid material having a wide area with fine particles. Accordingly, the method can be applied to the immobilization of metal fine particles on various solid substrates, for instance, the surface-modification of a support for chromatography, a sensor, an inner wall of glass capillaries, a microchip device, a microarray or a DNA chip. |