Structural and Thermal Studies of Fluorescein and Rhodamin6G Grafted Diblock Copolymers

Abstract

The ring-opening polymerization (ROP) of tetrahydrofuran (THF) and ε-caprolactone (CL) was performed at 160 o C for 2 hr under N 2 ambiance by using two different dyes such as uorescein (Flur) and rhodamine6G (R6G) as novel initiators. The structure of the dye centered diblock copolymers was concluded by analyzing the NMR spectra. The melt transition temperature and thermal stability of the polymers were concluded by DSC and TGA. The FT-IR spectra concluded the structure of the dye grafted homopolymer and diblock copolymers. The increase in molecular weight (M w ) of the dye-centered diblock copolymer was concluded by the GPC measurement. The conjugation of dye with the polymer backbone was carried out by a single-step method.

Pyrroloquinoline Based Styryl Dyes Doped PMMA, PS, and PS/TiO2 Polymer for Fluorescent Applications

“…The multilayer films of biopolymer for controlled release of drug molecules are extensively studied in recent years [ 10 – 12 ]. The addition of small amounts of fluorescent dye in the polymer can make the polymer fluorescent [ 13 ]. The temperature responsive copolymer-coated silica nanoparticles for long-term release of fluorescent favipiravir was recently studied [ 14 ].…”