Selective Optical Chemical Sensing of Ferrous (Fe2+) and Cupric (Cu2+) Ions by Pyridine Based Sulfonamide. - Batool, Madeeha; Khan, Iqra Saleem; Farooq, Muhammad Umar; Jalees, Muhammad Irfan; Solangi, Amber Rehana; Qadir, Muhammad Abdul; Alizadeh, Javad; Taher, Mohammad Ali (Topics in Catalysis, 2025)