supported by the Chinese Academy of Sciences(No.KZCX2-YW-410);the National Natural Science Foundation of China(No.40776058);the National 863 High Technology Project of the Ministry of Science and Technology of China(No.2007AA09Z103);the Outstanding Youth Natural Science Foundation of Shandong Province(No.JQ200814)
Four 20-membered N_2S_4-monoazathiacrown ethers have been synthesized and explored as neutral ionophores for Ag^+-selective electrodes.Potentiometric responses reveal that the flexibility of the ligands has great effe...