Evolution of large stokes shift and non-radiative energy transfer phenomenon in sustainable blue-fluorescent CQDs upon subnanomolar detection of Acebrophylline. - Perumal SDM; Thangaian DT; Nandhakumar M; Devaraj N; Kalagatur NK (Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 2025)