The rates of electron exchange between oxidized and reduced forms of sev- eral derivatives of ferrocene(1-3)have been measured in acetonitrile by the NMR line h(?)oadening method at 25℃。It was found that the r(?)tes...The rates of electron exchange between oxidized and reduced forms of sev- eral derivatives of ferrocene(1-3)have been measured in acetonitrile by the NMR line h(?)oadening method at 25℃。It was found that the r(?)tes vary with the lengtn of the substitutent chain and the potential of E_(Fe(Ⅲ)/Fe(Ⅱ))in the ferrocene derivatives.展开更多
1 Results In order to obtain liquid crystals including an ion atom as a transition metal, the ferrocene derivatives containing mesogenic group were designed with a view to prevent great bulk of ferrocenyl moiety in th...1 Results In order to obtain liquid crystals including an ion atom as a transition metal, the ferrocene derivatives containing mesogenic group were designed with a view to prevent great bulk of ferrocenyl moiety in the molecules, because rod-like molecular shape is preferable to show liquid crystallinity. Therefore, methylene chain was installed as a flexible spacer between ferocenyl moiety and mesogenic one. As a result, a lot of liquid crystalline ferrocene derivatives were synthesized successfully. Si...展开更多
Ethynylferrocene and iodoethynylferrocene were prepared in high yield as 88-90% through a one-pot procedure. 1, 1'-diiodoferrocenylene was in-situ prepared from reaction of CHI3 PPh3, t-BuOK and ferrocenecarboxald...Ethynylferrocene and iodoethynylferrocene were prepared in high yield as 88-90% through a one-pot procedure. 1, 1'-diiodoferrocenylene was in-situ prepared from reaction of CHI3 PPh3, t-BuOK and ferrocenecarboxaldehyde, further reaction with t-BuOK or n-BuLi gave the title compounds.展开更多
Electrochemical behaviours of Europium-ferrocene derivative complex chemically modified electrodes were studied in the paper. Various factors which affect the voltammetry of the thin film modified electrodes, and the...Electrochemical behaviours of Europium-ferrocene derivative complex chemically modified electrodes were studied in the paper. Various factors which affect the voltammetry of the thin film modified electrodes, and the charge transport process of the thin film electrode were discussed. Size of the hydrated anion (counter ion), concentration of the electrolyte, swelling property of the film in the solvent and thickness of the film have significant effects on the voltammetry of the thin film electrode. Electrochemical behaviours of europium-ferrocene derivative compelx chemically modified electrode were studied in an aqueous solution. When scan ning between 0-0.8 V (vs. SCE), experimental results indicate that the chemically modified electrode has good stability and reproducibility. The apparent rate constant of electrode reaction is deteminedd to be 6.7×10-1 s-1.展开更多
A novel chiral stationary phase （CSP） was prepared by immobilizing mono（6A-N-1-（2-hydroxyl）-phenylethylimino-6A- deoxy）-β-cyclodextrin onto the surface of silica gel via a longer spacer. This chiral stationary ...A novel chiral stationary phase （CSP） was prepared by immobilizing mono（6A-N-1-（2-hydroxyl）-phenylethylimino-6A- deoxy）-β-cyclodextrin onto the surface of silica gel via a longer spacer. This chiral stationary phase exhibited good enantioselectivity for a variety of chiral compounds under reversed-phase conditions.展开更多
A novel complex [Cd2(phen)4(fca)2](ClO4)2(H2O)2 (fca = dianion of 3-ferrocenyl- 2-crotonic acid, phen = 1,10-phenanthroline) has been synthesized and characterized by X-ray single-crystal structure analysis. It crysta...A novel complex [Cd2(phen)4(fca)2](ClO4)2(H2O)2 (fca = dianion of 3-ferrocenyl- 2-crotonic acid, phen = 1,10-phenanthroline) has been synthesized and characterized by X-ray single-crystal structure analysis. It crystallizes in triclinic system, space group P?with a = 11.6297(5), b = 12.5165(5), c = 13.8986(6) ? a = 63.345(1), b = 87.747(1), g = 71.862(1), V = 1706.20(1) ?, Z = 1, Dc = 1.673 g/cm3, F(000) = 868 and m(MoKa) = 1.185 mm-1 (l = 0.71073 ). R = 0.0800 and wR = 0.1793 for 7653 observed reflections (I > 2s(I)). The structure consists of a dinuclear cation [Cd2(phen)4(fca)2]2+, two discrete perchlorate anions and two water molecules. The cationic part of the complex shows a tetrametallic core in which two fca groups act as the (O, O) bridging ligands between two cadmium(Ⅱ) ions with a distorted octahedral environment. The Cd…Cd intradimer distance is 4.128 ?展开更多
On the basis of investigation of molecular structure characteristics of model ferrocene derivatives, the correlation between stability and molecular structure of double-core ferrocene derivatives （DFDs） was studied....On the basis of investigation of molecular structure characteristics of model ferrocene derivatives, the correlation between stability and molecular structure of double-core ferrocene derivatives （DFDs） was studied. Then, the relation of stability of DFDs and impact sensitivity of fine-AP/DFD mixtures was investigated. The results showed that the DFDs with methylene bridge group were more stable than those with methylethylidene bridge group. The stability order of the five DFDs was DEFM〉EDFM≈BDFM〉GFP〉TBPF. The impact sensitivities of the fine-AP/DFD mixtures were in inverse proportion to the stabilities of the DFDs.展开更多
The sol-gel derived glucose biosensor was developed, and the sol-gel membrane was organically modified by N-（3-triethoxysilylpropyl）-ferrocenylmethylamine （FcSi） as sol-gel precursor to make electrochemical biosen...The sol-gel derived glucose biosensor was developed, and the sol-gel membrane was organically modified by N-（3-triethoxysilylpropyl）-ferrocenylmethylamine （FcSi） as sol-gel precursor to make electrochemical biosensor. The structure of biosensor was sol-gel/FcSi＋GOx/GC type （glucose oxidase, GOx）. The ferrocene mediator was chemically immobilized to the silane network, and GOx was entrapped to the sol-gel glass network. Therefore, these structures prevented mediator leakage and retained the enzyme activity. Additionally, pH of electrolyte, temperature effects, and interference of positive substances with biosensor were investigated. And the electrochemical performance of biosensor was studied by amperometry. The results indicated that the linear range, detection limit. and response slope of biosensor was 2.00×10^-4-1.57×10^-3 mol·L^-1, 2.0×10^-4 mol·L^-1 and 5.06×10^5 nA·mol^- 1·L, respectively.展开更多
文摘The rates of electron exchange between oxidized and reduced forms of sev- eral derivatives of ferrocene(1-3)have been measured in acetonitrile by the NMR line h(?)oadening method at 25℃。It was found that the r(?)tes vary with the lengtn of the substitutent chain and the potential of E_(Fe(Ⅲ)/Fe(Ⅱ))in the ferrocene derivatives.
文摘1 Results In order to obtain liquid crystals including an ion atom as a transition metal, the ferrocene derivatives containing mesogenic group were designed with a view to prevent great bulk of ferrocenyl moiety in the molecules, because rod-like molecular shape is preferable to show liquid crystallinity. Therefore, methylene chain was installed as a flexible spacer between ferocenyl moiety and mesogenic one. As a result, a lot of liquid crystalline ferrocene derivatives were synthesized successfully. Si...
基金key basic research grants in Ninth Five-year Plan of Chinese Academy of Sciences,the National Natural Science Foundation under 20074036.
文摘Ethynylferrocene and iodoethynylferrocene were prepared in high yield as 88-90% through a one-pot procedure. 1, 1'-diiodoferrocenylene was in-situ prepared from reaction of CHI3 PPh3, t-BuOK and ferrocenecarboxaldehyde, further reaction with t-BuOK or n-BuLi gave the title compounds.
文摘Electrochemical behaviours of Europium-ferrocene derivative complex chemically modified electrodes were studied in the paper. Various factors which affect the voltammetry of the thin film modified electrodes, and the charge transport process of the thin film electrode were discussed. Size of the hydrated anion (counter ion), concentration of the electrolyte, swelling property of the film in the solvent and thickness of the film have significant effects on the voltammetry of the thin film electrode. Electrochemical behaviours of europium-ferrocene derivative compelx chemically modified electrode were studied in an aqueous solution. When scan ning between 0-0.8 V (vs. SCE), experimental results indicate that the chemically modified electrode has good stability and reproducibility. The apparent rate constant of electrode reaction is deteminedd to be 6.7×10-1 s-1.
基金Financial support from the National Natural Science Foundation of China (No.20572009)
文摘A novel chiral stationary phase （CSP） was prepared by immobilizing mono（6A-N-1-（2-hydroxyl）-phenylethylimino-6A- deoxy）-β-cyclodextrin onto the surface of silica gel via a longer spacer. This chiral stationary phase exhibited good enantioselectivity for a variety of chiral compounds under reversed-phase conditions.
基金the grants from the State Key Program of China the National Natural Science Foundation of China (29871001 20071001) and the Committee of Education of Anhui province
文摘A novel complex [Cd2(phen)4(fca)2](ClO4)2(H2O)2 (fca = dianion of 3-ferrocenyl- 2-crotonic acid, phen = 1,10-phenanthroline) has been synthesized and characterized by X-ray single-crystal structure analysis. It crystallizes in triclinic system, space group P?with a = 11.6297(5), b = 12.5165(5), c = 13.8986(6) ? a = 63.345(1), b = 87.747(1), g = 71.862(1), V = 1706.20(1) ?, Z = 1, Dc = 1.673 g/cm3, F(000) = 868 and m(MoKa) = 1.185 mm-1 (l = 0.71073 ). R = 0.0800 and wR = 0.1793 for 7653 observed reflections (I > 2s(I)). The structure consists of a dinuclear cation [Cd2(phen)4(fca)2]2+, two discrete perchlorate anions and two water molecules. The cationic part of the complex shows a tetrametallic core in which two fca groups act as the (O, O) bridging ligands between two cadmium(Ⅱ) ions with a distorted octahedral environment. The Cd…Cd intradimer distance is 4.128 ?
基金We are grateful for the financial support from the joint fund of the National Natural Science Foundation Committee of China Academy of Engineering Physics （NSAF） （No. U1230102）.
文摘On the basis of investigation of molecular structure characteristics of model ferrocene derivatives, the correlation between stability and molecular structure of double-core ferrocene derivatives （DFDs） was studied. Then, the relation of stability of DFDs and impact sensitivity of fine-AP/DFD mixtures was investigated. The results showed that the DFDs with methylene bridge group were more stable than those with methylethylidene bridge group. The stability order of the five DFDs was DEFM〉EDFM≈BDFM〉GFP〉TBPF. The impact sensitivities of the fine-AP/DFD mixtures were in inverse proportion to the stabilities of the DFDs.
文摘The sol-gel derived glucose biosensor was developed, and the sol-gel membrane was organically modified by N-（3-triethoxysilylpropyl）-ferrocenylmethylamine （FcSi） as sol-gel precursor to make electrochemical biosensor. The structure of biosensor was sol-gel/FcSi＋GOx/GC type （glucose oxidase, GOx）. The ferrocene mediator was chemically immobilized to the silane network, and GOx was entrapped to the sol-gel glass network. Therefore, these structures prevented mediator leakage and retained the enzyme activity. Additionally, pH of electrolyte, temperature effects, and interference of positive substances with biosensor were investigated. And the electrochemical performance of biosensor was studied by amperometry. The results indicated that the linear range, detection limit. and response slope of biosensor was 2.00×10^-4-1.57×10^-3 mol·L^-1, 2.0×10^-4 mol·L^-1 and 5.06×10^5 nA·mol^- 1·L, respectively.
