Functional Modification of Photoluminescent Behaviour of 6-O-Triphenylmethylchitosan Embedded Zinc Sulphide based Nanocomposites: Synthesis and Characterization

The 6-O-triphenylmethylchitosan (TPMC)-modified zinc sulfide (ZnS) nanoparticles were successfully prepared by sol-gel method. The optical and structural properties of the composites were ascribed to the formation of ZnS nanoparticles. The TPMC-modified ZnS nanoparticles have been fabrication during the polymerization process. The produced nanoparticles were examined by FTIR, UV-Vis and photoluminescence (PL) spectra, TEM, XRD and AFM techniques. The XRD diffraction patterns of crystallite size of TPMC-modified ZnS was 30 nm and formed with a sphalerite cubic structure. Similarly, TEM images of the prepared TPMC-modified ZnS nanoparticles were revealed the spherical and porous surfaces of the composites. AFM results has showed that the particles nearly spherical and uniformly distributed. The PL emission was found to be 450 nm when excited at 350 nm. Based on the experimental results, the fabricated TPMC-modified ZnS nanoparticles are ideal candidates in the field of bio-imaging applications.