Abstract
There is a strong demand for developing a simple, scalable, and transferable method to prepare homogeneous and highly photoluminescent composite for diverse applications. Herein, homogeneous composites were successfully synthesized by thermal annealing blends of polyvinyl alcohol, citric acid, and ethylenediamine. The composites exhibited intensive photoluminescence under excitation around 350 nm. Infrared, nuclear resonance, and optical characterizations suggest that diverse structures involving 5-oxo-1,2,3,5-tetrahydroimidazo-[1,2-α]-pyridine-7-carboxylic acid (IPCA) accounts for the high photoluminescence of the composites.
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