The platinum (II) complexes of the [Pt (N4,N7-Ribavirin) (DMSO) Cl], [Pt (N4,N7-De-oxyribavirin) (DMSO) Cl] were obtained by the reactions of cis-[Pt (DMSO)2 Cl2] and K[Pt (DMSO) Cl3] with 1-??-D-ribofuranosyl-1,2,4-t...The platinum (II) complexes of the [Pt (N4,N7-Ribavirin) (DMSO) Cl], [Pt (N4,N7-De-oxyribavirin) (DMSO) Cl] were obtained by the reactions of cis-[Pt (DMSO)2 Cl2] and K[Pt (DMSO) Cl3] with 1-??-D-ribofuranosyl-1,2,4-triazole-3-carboxamide (Ribavirin) and its deoxy-analogue (deoxyribavirin). The preparation of 1-(2'-deoxy-?-D-ribofuranosyl) -1,2,4-triazole-3-carboxamide was also performed through a four-step procedure, protection of 3', 5'-dihydroxyl group of Ribavirin with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (TPDS-Cl), phenoxythio-carbonylation of the 2'-hydroxyl group of 3', 5'-O-TPDS-Ribavirin with phenoxythiocarbonyl-chloride (PTC-Cl), reduction of 2′-O-phenoxythiocarbonyl ester of 3', 5'-O-TPDS-Ribavirin with tri-n-butyltin hydride and AIBN, deprotection of 3', 5'-O-TPDS-Ribavirin with tetrabutylammon-ium fluoride in THF.展开更多
The selection and preparation of electrocatalysts of high performance is one of the most important subjects in the applied researches of electrocatalysis. The common method to obtain electrocatalysts of high performan...The selection and preparation of electrocatalysts of high performance is one of the most important subjects in the applied researches of electrocatalysis. The common method to obtain electrocatalysts of high performance and low cost is to disperse catalytic materials on supports of carbon or oxides. It is well known that platinum exhibits the best electrocatalytic activity compared with other metals, for which the preparation展开更多
我对Platin(铂庭)的产品并不陌生,印象里这个来自丹麦的音箱品牌,旗下产品都有着精致亮丽的外表。正因为见多了非黑即白的音箱,让我每次见到Platin音箱产品都会产生眼前一亮的惊喜。不过这次来到杂志社的产品不再以音箱为主角,而是另一...我对Platin(铂庭)的产品并不陌生,印象里这个来自丹麦的音箱品牌,旗下产品都有着精致亮丽的外表。正因为见多了非黑即白的音箱,让我每次见到Platin音箱产品都会产生眼前一亮的惊喜。不过这次来到杂志社的产品不再以音箱为主角,而是另一款无线多输入音源发射器Platin Pro AirHub(以下简称:AirHub)。Platin Pro是Platin的一条全新产品线,它的定位是专业化、商业级,旨在为客户提供多种解决方案,以技术改善聆听体验。Air Hub是其最新推出的一款商用/家用无线发射器,专为由于不可抗因素而无法实现布线的餐饮店、酒店、舞台等商业场所,提供无线音频传输解决方案。展开更多
The platinized FTO glass counter electrode was prepared by employing techniques of colloid preparation, Langmuir-Blodgett film and self-assembly. The present elec- trode had very low platinum loading, high catalytic a...The platinized FTO glass counter electrode was prepared by employing techniques of colloid preparation, Langmuir-Blodgett film and self-assembly. The present elec- trode had very low platinum loading, high catalytic activity for iodine/triiodide reduction reaction. Compared with the conventional counter electrodes used in nanocrystalline dye-sensitized solar cells, the present electrode had provided a much higher catalytic performance which was attributed to the structure of platinum nanoclusters distributed homoge- neously on the electrode.展开更多
PtX 2 ],and alkaline earth cations malonate or ammonium malonate were applied in t he synthesis.The re-sulting platinum(Ⅱ)complex has been characterized with its IR,1 H-NMR and 13 C-NMR,FAB-MS and TG-DTA spectra.
Pt/TiO2 was prepared by impregnation method and characterized with XRD、 BET and XRD results showed TiO2 as prepared was anatase and the average particle sizewas about17 nm.The results of the photocatalytic degradatio...Pt/TiO2 was prepared by impregnation method and characterized with XRD、 BET and XRD results showed TiO2 as prepared was anatase and the average particle sizewas about17 nm.The results of the photocatalytic degradation of 3-methyl indole suggested that the influences of Pt amount and loading amount of catalytics have obvious effect to catalyst activity.The concentration of flow rate and consistence obviously influenced the 3-methyl indole photocatalytic degradation.展开更多
文摘The platinum (II) complexes of the [Pt (N4,N7-Ribavirin) (DMSO) Cl], [Pt (N4,N7-De-oxyribavirin) (DMSO) Cl] were obtained by the reactions of cis-[Pt (DMSO)2 Cl2] and K[Pt (DMSO) Cl3] with 1-??-D-ribofuranosyl-1,2,4-triazole-3-carboxamide (Ribavirin) and its deoxy-analogue (deoxyribavirin). The preparation of 1-(2'-deoxy-?-D-ribofuranosyl) -1,2,4-triazole-3-carboxamide was also performed through a four-step procedure, protection of 3', 5'-dihydroxyl group of Ribavirin with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (TPDS-Cl), phenoxythio-carbonylation of the 2'-hydroxyl group of 3', 5'-O-TPDS-Ribavirin with phenoxythiocarbonyl-chloride (PTC-Cl), reduction of 2′-O-phenoxythiocarbonyl ester of 3', 5'-O-TPDS-Ribavirin with tri-n-butyltin hydride and AIBN, deprotection of 3', 5'-O-TPDS-Ribavirin with tetrabutylammon-ium fluoride in THF.
文摘The selection and preparation of electrocatalysts of high performance is one of the most important subjects in the applied researches of electrocatalysis. The common method to obtain electrocatalysts of high performance and low cost is to disperse catalytic materials on supports of carbon or oxides. It is well known that platinum exhibits the best electrocatalytic activity compared with other metals, for which the preparation
文摘我对Platin(铂庭)的产品并不陌生,印象里这个来自丹麦的音箱品牌,旗下产品都有着精致亮丽的外表。正因为见多了非黑即白的音箱,让我每次见到Platin音箱产品都会产生眼前一亮的惊喜。不过这次来到杂志社的产品不再以音箱为主角,而是另一款无线多输入音源发射器Platin Pro AirHub(以下简称:AirHub)。Platin Pro是Platin的一条全新产品线,它的定位是专业化、商业级,旨在为客户提供多种解决方案,以技术改善聆听体验。Air Hub是其最新推出的一款商用/家用无线发射器,专为由于不可抗因素而无法实现布线的餐饮店、酒店、舞台等商业场所,提供无线音频传输解决方案。
基金the National Key Basic Research Development Program of China(Grant No.G2000028205)the Knowledge Innovation Foundation of the Chinese Academy of Scicnces(Grant No.KGCX2-303)+1 种基金the National hightech Research Program(the"863"Program)(Grant No.2002AA302403)the National Natural Science Foundation of China/grant No.502212011.
文摘The platinized FTO glass counter electrode was prepared by employing techniques of colloid preparation, Langmuir-Blodgett film and self-assembly. The present elec- trode had very low platinum loading, high catalytic activity for iodine/triiodide reduction reaction. Compared with the conventional counter electrodes used in nanocrystalline dye-sensitized solar cells, the present electrode had provided a much higher catalytic performance which was attributed to the structure of platinum nanoclusters distributed homoge- neously on the electrode.
文摘PtX 2 ],and alkaline earth cations malonate or ammonium malonate were applied in t he synthesis.The re-sulting platinum(Ⅱ)complex has been characterized with its IR,1 H-NMR and 13 C-NMR,FAB-MS and TG-DTA spectra.
基金National Natural Science Foundation of China(50773008)the Fundamental Research Founds for the Central Universities(DUT10LK30)the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry
文摘Pt/TiO2 was prepared by impregnation method and characterized with XRD、 BET and XRD results showed TiO2 as prepared was anatase and the average particle sizewas about17 nm.The results of the photocatalytic degradation of 3-methyl indole suggested that the influences of Pt amount and loading amount of catalytics have obvious effect to catalyst activity.The concentration of flow rate and consistence obviously influenced the 3-methyl indole photocatalytic degradation.
