TY - JOUR T1 - A colourimetric calix[4]pyrrole-4-nitrophenolate based anion sensor JO - CHEM COMMUN PY - 1999/09/21 AU - Gale PA AU - Twyman LJ AU - Handlin CI AU - Sessler JL ED - IS - 18 SP - 1851 EP - 1852 Y2 - 2024/12/26 ER -