Thursday, November 12, 2015: 1:15 PM
251C (Salt Palace Convention Center)
In this work we present the thermogravimetric analysis (TGA) of poly(vinylidene) fluoride (PVDF) films doped with zinc-nitrate for potential sensor applications. PVDF can exist in at least four different conformational crystalline phases. The most readily attained phases are Î± (nonpolar), Î² (ferroelectric), and Î³ (polar). Adding Zn(NO3)2 to a solution of PVDF before spin casting will increase the amount of Î² phase present in the thin films and induce retention of solvent molecules in the PVDF.
A three-layer system of substrate, polymer, and dye leads to a fluorescence enhancement. We also report the interfacial interactions and PVDF phase on the fluorescence enhancement by comparing the properties of PVDF coated with the fluorescent dye rhodamine 6G (PVDF/Rh6G)Â and PVDF-Zn2+/Rh6G films as a function of Zn2+ composition and PVDF phase.