The new uridine-containing derivative of p-tert-butylcalix [4] arene-5,11,17,23-tet-tert-butyl-25,26,27-trihydroxyl-28-oxyuridinecalix [4]arene (CU)-was synthesized and characterized by 1H NMR. 13C NMR, IR EI-MS. and ESI-MS spectra. By the ald of UV-vis spectra, the molecular recognition of CU was stuthed. The hyphromlc ef-fect in UV-vis spectra showed the obvious molecular recognition of CU to ATP. This recoenition is actually the hydro-gen bond interaction between the uracil group of CU and the base radical of ATP. The assocation constant between CU and adenine was determined b3 UV itration at low concentrations.

This paper reports metallization of PZT (lead zirconate titanate) piezoelectric ceramic surfaces accomplished by an electroless plating process with proper after-treat-ment. With this method, nickel electrodes can be formed on PZT piezoelectric ceramic components used in piezo-electric ceramic wave filters. The main mechanical and electric properties of the piezoelectric ceramic conlpo-nents with this type of plated Ni electrode are as good as, or even better than, those with "fired-on" Ag electrodes. This paper introduces the detailed process of pretreat-ment, electroless plating and after-treatment, and dis-cusses the principles, results and various effective factors in each process, and indicates preferred operating condi-tions and control methods feasible in practical production.

The selective dinitro-substituted derivative of thiacalix [4] arene was synthesized by a three-step route and characterized. Its acid-base properties in a water solution were studied by UV-vis spectroscopy. Its four pKa values were determined by Target Testing Factor Analysis (TTFA).

通过萃取的方法，详细研究了硫杂杯[4]芳烃在不同pH、不同的摩尔配比的萃取剂及不同浓度铅离子等不同条件下的萃取作用，确定了萃取的最佳条件。为硫杂杯[4]芳烃应用于富集或排除铅离子提供了理论依据。

The liquid membrane transport of Na+ ions by p-tert-butylcalix [6] arene and that of K+ ions by p-tert-butylcalix [8] arene were investigated by means of a bubbling pseudo-emulsion liquid membrane system. This system represents a proton-coupled transport with a flow of protons in the opposite direction. The driving force for the transport is the pH gradient between the source and receiving phases. When the pH difference between the two phases is sufficient, the carriers calix [6] arene(or calix [8] arene) can successfully transport Na+ (or K+) ions from the source phase with a lower Na+ (or K+) oncentration into the receiving phase with a higher Na+ (or K+) concentration, like a Na+ (or K+) ion pump.