The book gives brief explanation of fluorescence and thermal property of polymeric materials by taking different heterocycles in its backbone. The reaction scheme shows ether linkage, ester group and heterocycles in the main chain.The heterocyclic molecule coumarin and s-triazine are used in high performance material. It shows the complete methodology and theory to explain color, solubility in polar and non polar solvents, viscosity and characterization of polymeric material. Different methods to measure the thermal properties of the polymers are discussed. The fluorescence gives absorption band and different coloration probe in emission spectra. The aim is to explain and show complete description regarding fluorescent probe and good thermal stability of polymeric material for futuristic approach with enormous industrial applications.