A coumarin based Schiff Base: an effective colorimetric sensor for selective detection of F– ion in real samples and DFT studies - Ahmed, Nadeem; Zareen, Wajeeha; Shafiq, Zahid; Morais, Sara Figueirêdo de Alcântara; Khalid, Muhammad; Braga, Ataualpa Albert Carmo; Munawar, Khurram Shahzad; Yong, Ye (Spectrochimica Acta Part A, 2023)