Photo-Chemistry On Surface In Dark-Area And Related Applied Technique

The reaction of benzophenone's excitation and active hydrogen-abstraction is a typical photo-reduction reaction; it has been widely applied to surface photo-grafting and photo-polymerization. But on the other hand, it is widely accepted that the photo-reduction reaction can be realized only on the area directly irradiated by UV-light. This feature limits the application of the above photo-reduction reaction on photo-grafting when the substrates are unstable under UV-irradiation or the substrates have complicated structures which make some surfaces of the substrates impossible to be irradiated by UV directly; similarly, UV-irradiation can't be used in those systems bearing unstable monomers and other components when exposed to UV-light. Therefore, if the photo-reduction of BP can be separated into two parts which can take place in different areas (one in irradiation-area and the other in non-irradiation-area), the above problems can be solved successfully. In this paper, a self-made apparatus is used to achieve the aim that separating the photo-reduction reaction into two parts and making them be carried out in two places. This method is called "Photo-induced reduction reaction in...