Synthesis Of DHPMS/DHP-Porphrin Noncvalent Functionalized Graphene Oxide Sheet And Their Characters Study

Owing to its unique structure of graphene, it has many excellentproperties such as excellent optical, electrical, thermal, etc., and graphene hasattracted much attention this years, but the absence of a functional group onthe surface limits its application. Graphene oxide is a kind of modifiedgraphenes, whose surface has a plurality of group-containing group such as–COOH、-OH、-C-0-C-,which make graphene oxide have a ability to form astable aqueous dispersions in water. Taking advantage of these special groupson the graphene oxide,Some special materials can be assembled on thegraphene oxide by non-covalent bond or a covalent bond,to prepare a kind ofcomposite material with special properties. Thanks to its large π-conjugatedplane structure,porphyrin can modify graphene oxide by a non-covalentinteraction, thereby preparing a porphyrin modified material which havespecial optical properties.This paper will carry out the work from the following aspects:1、Designed and synthesized8kinds of dihydrogenpyrimidine-ketone-porphyrin(DHPMS-TPP),synthesizing this series compounds taked too muchtime,so we should improve the reaction conditions.2, Synthesized8kinds of1,4-dihydropyridinea-porphrin (DHP-TPP).3, Prepared two seris of newhybrid materials of DHPMS-TPP and DHP-TPP with graphene oxide (GO) vianon-covalent interactions.The porphyrin compounds stacking on the GOsurface due to π-π interactions, being revealed by some measurements such asAFM. IR,UV-vis absorption, Fluorescence intensity,and testing thecompounds’fluorescence quantum efficiency. the non-covalentfunctionalization of the GO was by confirmed Fluorescence spectra.Wediscover that porphyrin-GO compounds can form a stable dispersion in water,and the Soret peak of porphyrin revealed the red-shift, and the change of itsfluorescence properties vatified from the carbon atom number.