High luminescent fluorophore synthesized at atmospheric pressure from citric acid and ethylenediamine

摘要

In this paper, we show a low temperature normal pressure synthesis of a blue emissive organic fluorophore. Theorganic fluorophore molecule - 1, 2, 3, 5-tetrahydro-5-oxo-imidazo [1, 2-a] pyridine-7-carboxylic acid (IPCA) - consistsof derivatives of imidazole and benzoic rings with a carboxylic group. The molecule has a strong emission maximum ataround 450 nm when excitation of 350 nm us used and is correlated with PL spectra of carbon nanoparticles. Thequantum yield was found to be relatively high: around 55%. IPCA luminescent properties are similar to the reported forsome carbon nanostructures, obtained via hydrothermal synthesis from citric acid and ethylenediamine.