ION SELECTIVE ELECTRODE USING LIGHT RESPONSIVE CALIX ARENE DERIVATIVE

PURPOSE:To perform a plurality of ion analyses with a single electrode by using a filmlike matter obtained by dispersing calix [4] arene derivative in polymer containing plasticizer as neutral carrier as an operating electrode. CONSTITUTION:Calix [4] arene derivative is one type of twoanthracene group- containing compound in which 25-position and 27-position or 26-position and 28-position of a molecule are substituted with 9-anthryloxy-ethyl group, and represented by a formula A. In the formula, X is particularly preferably CH2CH2 CH3, Y1, Y2 are generally the same, and preferably -H, -C(CH3)3. When the compound of the formula A is applied to the operating electrode by forming to a film state with plasticizer-containing polymer, selectivity to Nak is enhanced if it is irradiated with visible light (350nm or more), and Na exhibits different ion selectivity when it is irradiated with an ultraviolet light (280nm or less0. For example, in order to obtain Li selectivity, plasticizer of phosphoric acid series such as TOP is used. As the polymer, PVC is particularly preferable.