Homogeneous and highly photoluminescent composites based on in-situ formed fluorophores in PVA blends

One-step thermal treatment homogeneous blends of PVA, citric acid, and ethylenediamine results in composites that emit intensively under UV bumping. The origin of absorption, excitation and emission properties of composites was investigated by combining optical and chemical characterizations. It has been demonstrated that IPCA, being involved in diverse structures accounts for the optical properties of composites.