Layer-by-layer Self-assembly Based On Diazonium Containing Polymers, Composite Spheres And Hollow Capsules

In this dissertation, ultra thin films, composite particles and hollow spheres based on the diazonium (or diazo-sulfonate) containing polymers have been fabricated through layer-by-layer self-assembly. The films or the shells of the composite particles can be crosslinked with irradiation of UV light or heating. As a result the stability of the films or the shells towards polar solvents was improved dramatically.Besides, the crosslinkable ultra-thin films and hollow spheres were fabricated from CdTe nanoparticles capped with mercapto-propanoic acid and poly (allyl amine hydrochloride). In the presence of 1-Ethyl-3-(3-dimethyl-aminopropyl) carbodiimide hydrochloride (EDC), the crosslinked films and hollow spheres which possessed photo-luminescent property, were prepared.At last the hollow Ag spheres were synthesized with electroless Ag deposition technique using hollow sphere made from polyelectrolytes as the micro-reactor. The morphology and the structure of the Ag hollow spheres can be adjusted through the charge of the polyelectrolyte shell.The main results of this dissertation can be listed as follows:1. Self-assembly(SA) ultra thin films based on diazoresin (DR) and compounds containing hydroxy phenol groups, including phenol-formaldehyde resin, hydroxy calixarene and tetra-hydroxyphenyl porphyrin have been fabricated via H-bond interaction. Under UV irradiation, the H-bond will convert to covalent bond followed with the decomposition of the diazonium groups. The covalent attached films can stand the etching against polar solvents.2. Poly(4-diazonium-styrene) and Poly(4-diazonium styrene-co-4-vinyl pyridine), as well as their diazo-sulfonate derivates have been synthesized and were used as crosslinking agent to obtain the covalent attached ultra-thin films. A series of self-assembly films via different driven forces were built up successfully and investigated carefully.3. Many covalent-attached functional ultra thin films have been fabricated and were used in the photoelectron conversion studies. The functional molecules contain...