A series of new symmetrical and asymmetrical aliphatic tertiary amines and nicotinic acid derivatives synthesized as hydrogen ion carriers have been used for preparing solvent polymeric membrane (SPM) pH electrodes. T...A series of new symmetrical and asymmetrical aliphatic tertiary amines and nicotinic acid derivatives synthesized as hydrogen ion carriers have been used for preparing solvent polymeric membrane (SPM) pH electrodes. The electrodes prepared have wide linear mV-pH response range, and can be used for determination of pH of human blood serum, preparation of gas-sensing probes and end-point indication of acid-base titrations.The relationships between the structure of ionophores and electrode potential response characteristics were studied using quantum chemistry calculations.Super-Nernstian response was explained by establishment of a general membrane potential equation.展开更多
基金Project supported by the National Natural Science Foundation of China and partially by Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Academia Sinica.
文摘A series of new symmetrical and asymmetrical aliphatic tertiary amines and nicotinic acid derivatives synthesized as hydrogen ion carriers have been used for preparing solvent polymeric membrane (SPM) pH electrodes. The electrodes prepared have wide linear mV-pH response range, and can be used for determination of pH of human blood serum, preparation of gas-sensing probes and end-point indication of acid-base titrations.The relationships between the structure of ionophores and electrode potential response characteristics were studied using quantum chemistry calculations.Super-Nernstian response was explained by establishment of a general membrane potential equation.
