Copolymerization of styrene (St) with N-phenylmaleimide (NPMI) was studied with rare earth coordination catalyst Nd(naph)3-AlEt3 in toluene. Characterization of the copolymers showed that the copolymers possess an al...Copolymerization of styrene (St) with N-phenylmaleimide (NPMI) was studied with rare earth coordination catalyst Nd(naph)3-AlEt3 in toluene. Characterization of the copolymers showed that the copolymers possess an alternating structure.展开更多
A new polyamide containing bithiazole moieties （PTA） was synthesized by the polycondensation of 2, 2＇-diamino-4, 4＇-bithiazole （DABT） and oxalyl chloride. The polymer complex was prepared from PTA and NdC13 in D...A new polyamide containing bithiazole moieties （PTA） was synthesized by the polycondensation of 2, 2＇-diamino-4, 4＇-bithiazole （DABT） and oxalyl chloride. The polymer complex was prepared from PTA and NdC13 in DMSO. They were characterized through IR and elemental analysis. The preliminary magnetic properties of the complex PTA-Nd^3＋ was investigated, it was found that the material is a ferromagnet at low temperature.展开更多
Ring opening polymerization of (chloromethyl) thiirane (CMT) usingrare earth coordination catalysts has been investigated for the first time: Ithas been found that binary rare earth coordination catalyst composed of r...Ring opening polymerization of (chloromethyl) thiirane (CMT) usingrare earth coordination catalysts has been investigated for the first time: Ithas been found that binary rare earth coordination catalyst composed of rareof phosphonate and trialkyl aluminum are effective catalysts for the polymerization of (chloromethyl)thiirane with high yield. Kinetic studies showed that the polymerization rate is of first order with respect to both monomer concentration and catalyst concentration. The antivation energy of the polyimerization reaction is 28.4kJ/mol.展开更多
Carbon nanotubes used for constructing biosensor was described for the first time. Single-wall carbon nanotubes (SWNTs) functionalized with carboxylic acid groups were used to immobilize glucose oxidase forming a glu...Carbon nanotubes used for constructing biosensor was described for the first time. Single-wall carbon nanotubes (SWNTs) functionalized with carboxylic acid groups were used to immobilize glucose oxidase forming a glucose biosensor. The biosensor response can be determined by amperometric method at a low applied potential (0.40 V).展开更多
Interpenetrating polymer network （IPN） composed of silk sericin （SS） and poly（N-isopropylacrylamide） （PNIPAAm） was prepared. The morphology of the IPNs, in which the SS phase was stained with ammonium cuprate,...Interpenetrating polymer network （IPN） composed of silk sericin （SS） and poly（N-isopropylacrylamide） （PNIPAAm） was prepared. The morphology of the IPNs, in which the SS phase was stained with ammonium cuprate, was examined with TEM and a relative homogeneous distribution of the two polymers was exhibited. The swelling behavior of the IPN hydrogels showed both temperature and pH dependences.展开更多
基金This project was supported by the National Natural Science Foundation of China. (No.29974024,20254001)
文摘Copolymerization of styrene (St) with N-phenylmaleimide (NPMI) was studied with rare earth coordination catalyst Nd(naph)3-AlEt3 in toluene. Characterization of the copolymers showed that the copolymers possess an alternating structure.
基金The authors are indebted to the financial support of the National Natural Science Foundation of China(No:20374044,20434020).
文摘A new polyamide containing bithiazole moieties （PTA） was synthesized by the polycondensation of 2, 2＇-diamino-4, 4＇-bithiazole （DABT） and oxalyl chloride. The polymer complex was prepared from PTA and NdC13 in DMSO. They were characterized through IR and elemental analysis. The preliminary magnetic properties of the complex PTA-Nd^3＋ was investigated, it was found that the material is a ferromagnet at low temperature.
文摘Ring opening polymerization of (chloromethyl) thiirane (CMT) usingrare earth coordination catalysts has been investigated for the first time: Ithas been found that binary rare earth coordination catalyst composed of rareof phosphonate and trialkyl aluminum are effective catalysts for the polymerization of (chloromethyl)thiirane with high yield. Kinetic studies showed that the polymerization rate is of first order with respect to both monomer concentration and catalyst concentration. The antivation energy of the polyimerization reaction is 28.4kJ/mol.
基金The authors are grateful to the financial supports of the National Natural Science Foundation (Grant No. 29974024 20174033 and 90101006).
文摘Carbon nanotubes used for constructing biosensor was described for the first time. Single-wall carbon nanotubes (SWNTs) functionalized with carboxylic acid groups were used to immobilize glucose oxidase forming a glucose biosensor. The biosensor response can be determined by amperometric method at a low applied potential (0.40 V).
基金financially supported by the National Natural Science Foundation of China(Grant No.20474055,60373038).
文摘Interpenetrating polymer network （IPN） composed of silk sericin （SS） and poly（N-isopropylacrylamide） （PNIPAAm） was prepared. The morphology of the IPNs, in which the SS phase was stained with ammonium cuprate, was examined with TEM and a relative homogeneous distribution of the two polymers was exhibited. The swelling behavior of the IPN hydrogels showed both temperature and pH dependences.
