R. Jerald Vijay

Growth and Characterization of Mixed Crystals of N, N‐Dimethylamino‐N′‐Methylstilbazolium p‐Toluenesulphonate and p‐Napthalenesulfonate

We have investigated the growth of mixed crystal of N, N‐dimethylamino‐N′‐methylstilbazolium p‐toluenesulphonate (DAST) and N, N‐dimethylamino‐N′‐methylstilbazolium p‐napthalenesulfonate (DSNS) using slow solvent evaporation method. The grown crystal was characterized by CHN analysis. The Fourier transform infrared (FTIR) spectral analysis have been carried out to identify the vibrational modes of the different functional groups present in the crystal.

Investigation on Growth and Surface Analysis of DAST Single Crystals

We have explored the growth of bulk size N, N‐dimethylamino‐N′‐methylstilbazolium p‐toluenesulphonate (DAST) using slope nucleation method. The grown crystal was characterized by single crystal X‐ray diffraction (XRD), and CHN analyses. The surface morphology of the crystal was analyzed using Scanning electron microscopy (SEM).

Synthesis Of CdSe@ZnS Quantum Dots Via Non‐TOPO Hydrothermal Techniques

We describe the synthesis of CdSe@ZnS semiconductor QDs by simple hydrothermal technique without TOPO solvent. Transmission electron microscopy (TEM) consistent with nanocrystals contains a core of nearly monodispersive CdSe@ZnS of 4–7 nm diameters. Optical absorption and photoluminescence (PL) measurement as well as EDX demonstrated good quality of obtained nanocrystallites, and the QDs exhibit strong luminescence at room temperature.

Growth, Spectral and Thermal Studies of Organic NLO Crystals of DSAS by SNM Technique

4‐N, N‐dimethylamino‐4′‐N′‐ methyl‐ stilbazolium p‐aminobenzenesulfonate (DSAS) single crystals were grown adopting slope nucleation method. Crystals of length 3 mm and diameter 0.5 mm were obtained successfully in 7 days. The elemental composition of DSAS was carried out by CHN analysis. The results are discussed in detail.