Surface Photografting of Novel Sulfobetaine Copolymers on Silica

Abhishek Kumar, Nazia Tarannum, Meenakshi Singh

Department of Chemistry, MMV Banaras Hindu University, Varanasi-221005, INDIA.

DOI: 10.4236/msa.2012.37066                

Abstract

A couple of novel sulfobetaine copolymer is developed via Michael-type addition reaction. The comonomers, diamines and maleimide react via Michael reaction through UV irradiation using AIBN as photoinitiator producing polyamine chain. Further, sulfobetaine copolymers were obtained on treatment of the polyamine with sulfopropylating agent, 1,3-propane sultone. These novel sulfobetaine polymers were grafted on silica surface to produce responsive biocompatible surface. This easy straightforward, catalyst free facile protocol for synthesis of polymer grafted surface is useful for developing biomedical devices. Additionally, both the copolymers show fluorescence characteristics.

Keywords

Copolymer, Sulfobetaine; Zwitterionic; Grafted Copolymer; Photopolymerization; Maleimide; Michael-Type Reaction; Surface Initiated Polymerization (SIP); Density Functional Theory (DFT); Fluorescence

Conflicts of Interest

The authors declare no conflicts of interest.

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