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A class of fascinating optoelectronic materials: Triarylboron compounds

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Science china chemistry 2010年第6期53卷 1235-1245页

作者： MOU Xin1,LIU ShuJuan1,DAI ChunLei1,MA TingChun1,ZHAO Qiang1,2,LING QiDan1 & HUANG Wei1 1key laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM),nanjing university of Posts and Telecommunications,nanjing 210046,china 2state key laboratory of coordination chemistry,nanjing university,nanjing 210093,china key laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM) Nanjing University of Posts and Telecommunications Nanjing China state key laboratory of coordination chemistry Nanjing University Nanjing China

Triarylboron compounds are significant optoelectronic materials due to their excellent emissive and electron-transport properties,and could be applied in organic light-emitting diodes as emissive and/or electron-transport *** compounds have vacant pπ orbital and have received increasing interest as fluoride ion and cyanide ion sensors utilizing specific Lewis acid-base *** review summarizes their structural characteristics,optical properties and applications in chemosensors for anions and optoelectronic devices developed in recent years and discusses the problems and prospects.

关键词： OLEDs optical properties sensors structure-property relationships triarylboron compounds

Inclusion Behavior of Dimer β-CyclodextrinBridged with Aspartic Acid Derivative

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Chinese Chemical Letters 2001年第2期12卷 119-120页

作者： Le Xin SONG coordination chemistry Institute & state key laboratory of coordination chemistry, nanjing university, nanjing 210093 coordination chemistry Institute State Key Lab. of Coord. Chemistry Nanjing University Nanjing 210093 China

The (β-cyclodextrin (CD) dimer bridged with aspartic acid (ASP) derivative, FITC-ASP(NH-(-CD)2 (Host, FITC=fluorescein-4-isothiocyanate), was synthesized. Fluorescence polarization study showed that the novel host formed an inclusion compound, [FITC-ASP(NH-(-CD)2]ATA, for which Kd was determined to be 5.0×10-6 mol/L by Beacon 2000 Analyzer, when ATA (Guest) = Adm-Trp-Arg-Arg-NH2 (Adm = 1-adamantanecarboxylic acid, Trp = tryptophan, Arg = arginine), where Kd is the dissociation constant in aqueous solution at 298 K.

关键词： β-Cyclodextrin amino acid peptide inclusion compound fluorescence polarization.

Syntheses,crystal structures and properties of three novel coordination polymers with tripodal imidazole-containing ligands and benzenetetracarboxylate

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Science china chemistry 2010年第10期53卷 2164-2169页

作者： SU Zhi, FAN Jian & SUN WeiYin state key laboratory of coordination chemistry nanjing National laboratory of Microstructures coordination chemistry Institute, School of chemistry and Chemical Engineering, nanjing university, nanjing 210093, china state key laboratory of coordination chemistry nanjing National laboratory of Microstructures coordination chemistry Institute School of Chemistry and Chemical Engineering Nanjing University Nanjing China

Three novel coordination polymers, [Ni2(tib)2(btec)]·2H2O (1), [Co2(tib)2(btec)]·2H2O (2) and [Zn4(tib)2(btec)Cl4]·2H2O (3), have been synthesized by using mixed ligands of 1,3,5-tris(1-imidazolyl)benzene (tib) and 1,2,4,5-benzenetetracarboxylic acid (H4btec) under hydrothermal conditions. Complexes 1 and 2 have the same structure and are rare three-dimensional (3D) self-penetrating (3,4,5)-connected nets, while complex 3 is an unprecedented (3,4)-connected 3D net. The different structures of 1 (2) and 3 are ascribed to the distinct coordination geometry of the metal centers. The thermal stability and photoluminescence property of the complexes were investigated.

关键词： coordination polymer self-penetration crystal structure thermal stability photoluminescence property

One-dimensional metal phosphonates based on 6-phosphononicotinic acid:A structural and magnetic study

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Science china chemistry 2010年第10期53卷 2112-2117页

作者： WANG PengFei, DUAN Yan & ZHENG LiMin state key laboratory of coordination chemistry coordination chemistry Institute, School of chemistry and Chemical Engineering, nanjing university, nanjing 210093, china state key laboratory of coordination chemistry coordination chemistry Institute School of Chemistry and Chemical Engineering Nanjing University Nanjing China

The reactions of 6-phosphononicotinic acid (pnaH3) and metal salts result in three new compounds, namely, M(pnaH)-(H2O)3·H2O [M = Co(Ⅱ) (1), Ni(Ⅱ) (2), Zn(Ⅱ) (3)]. These compounds are isostructural and contain 21 helical chains made up of corner-sharing {MO5N} octahedra and {PO3C} tetrahedra. The chains are further connected by extensive hydrogen bonds to form a three-dimensional supramolecular structure. Magnetic studies reveal that dominant antiferromagnetic interactions are mediated in both 1 and 2. Interestingly the dehydrated compound 1 shows metamagnetic behavior at low temperature.

关键词： carboxylate-phosphonate coordination polymer magnetic property metamagnetism

IMPEDANCE CHARACTERISTICS OF POLYFURAN FILMS

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Chinese Journal of Polymer Science 2002年第5期20卷 419-423页

作者： Liang Li Xiao-bo Wan Gi Xue Department of Polymer the state key laboratory of coordination chemistry nanjing university nanjing 210093. china Department of Polymer Nanjing University the State Key Laboratory of Coordination Chemistry Nanjing 210093

Electrochemical impedance spectroscopy (EIS) was first used for the characterization of polyfuran (PFu) films that had been formed electrochemically on an Au electrode. The polyfuran was measured in high oxidation state, intermediate oxidation state and reduction state, respectively. As the oxidation level is increased, the ionic conductivity of PFu/BF4- increases. And impedance studies on PFu show that the anion BF4- appears to be mobile with a high diffusion coefficient of approximately 10(-8) cm(2).s(-1).

关键词： polyfuran electrochemical impedance spectroscopy capacitance

Anion Adsorption on an Au Colloid Monolayer Based Cysteamine-Modified Gold Electrode

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Chemical Research in Chinese Universities 2001年第2期17卷 159-167页

作者： HU Xiao-ya, XIAO Yi and CHEN Hong-yuan (Department of chemistry, The state key laboratory of coordination chemistry, nanjing university, nanjing 210093, P. R. china) 南京大学配位化学国家重点实验室江苏南京 210093

Anion adsorption behavior on Au colloid surface was investigated in virture of depositing monolayers of Au colloid on the self-assembled monolayers of cysteamine on a gold electrode. Po- tential-dependent anion adsorption-desorption waves via the nonfaradaic current were obtained by means of cyclic voltammetry at Au coltoid-modified gold electrodes in the potential range of -2 00-600 mV. The adsorption sequence in the order of adsorption peak potentials (Epa) is OH- >citrate3 ->H2PO4- >Cl->SO42->ClO4->NO3-. Among them, citrate3- exhibited an en- tirely irreversible adsorption. A rise in temperature can increase the rates of adsorption-desorp- tion and improve the reversibility of the adsorption-desorption of Cl-, SO42-, ClO4-, NO3- and H2PO-4. The adsorption peak potentials shifted more negatively for Ca. 63 mV as the anion con- centrations were increased by a decade factor. The change of pH from 7 to 1 slightly affected the adsorption peak potentials of Cl- and NO3-. Au colloids with a smaller size (16 nm) gave rise to a better reversibility of the adsorption-desorption process and lower adsorption currents. The ex- perimental results of citrate ions adsorption on Au colloid surface show that Au colloids with a smaller size prepared by sodium citrate method exhibited a higher stability in the solution in com- parison to those with larger sizes because of its higher ratio of charge/mass. In other words, the smaller gold nanoparticles are covered with citrate ions monolayer that can also be formed at larg- er gold nanoparticles by means of electrochemical scan.

关键词： Colloidal gold Self-assembled monolayer Gold electrode Electrode dynamics

Sensitive biosensing strategy based on functional nanomaterials

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Science china chemistry 2011年第8期54卷 1202-1217页

作者： JU HuangXian state key laboratory of Analytical chemistry for Life Science Department of chemistry, nanjing university, nanjing 210093, china state key laboratory of Analytical chemistry for Life Science Department of chemistry Nanjing University Nanjing China

The first decade of the 21st century has been labeled as "the sensing decade". The functional nanomaterials offer excellent platforms for fabrication of sensitive biosensing devices, including optical and electronic biosensors. A lot of works have fo- cused on the biofunctionalization of different nanomaterials, such as metal nanoparticles, semiconductor nanoparticles and carbon nanostructures, by physical adsorption, electrostatic binding, specific recognition or covalent coupling. These biofunc- tionalized nanomaterials can be used as catalysts, electronic conductors, optical emitters, carriers or tracers to obtain the ampli- fied detection signal and the stabilized recognition probes or biosensing interface. The designed signal amplification strategies have greatly promoted the development of stable, specific, selective and sensitive biosensors in different fields. This review in- troduces some novel principles and detection strategies in the area of biosensing, based on functional nanomaterials. The gen- eral methods for biofunctionalization of nanomaterials with biomolecules and their biosensing application in immunoassay of protein, DNA detection, carbohydrate analysis and cytosensing are also described.

关键词： nanobiosensing biosensors nanomaterials biofunctionalization signal amplification bioanalysis biological recognition

Study on the inclusion compound of β-cyclodextrin with (η5-cyclopentadienyl)tricarbonylmanganese(0)

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Chinese Journal of chemistry 1995年第4期13卷 311-317页

作者： SONG, Le-Xin MENG, Qing-Jin YOU, Xiao-Zengcoordination chemistry state key laboratory, coordination chemistry Institute, nanjing university,nanjing, Jiangsu 210093, china coordination chemistry state key laboratory Coordination Chemistry Institute Nanjing University Nanjing Jiangsu 210093 China

The supramolecular inclusion compound of β-cyclodextrin (β-CD, host) with (η5-cyclopentadienyl)tricarbonylmanganese [MnCp(CO)3, guest] was obtained in a crystalline state. The host-guest compound is thermally stable and do not liberate the guest on heating at 100$ in vacuum. It was characteried by elemental analysis,1H NMR, differential scanning thermal (DSC) analysis and TLC. Continueous variation plot by NMR method shows that β-CD formed 1:1 inclusion compound with MnCp(CO)3. On the basis of 1H NMR spectra and the model building with Corey Pauling Koltum (CPK) models, the most probable inclusion mode is proposed.

关键词： Inclusion compound β-cyclodextrin supermolecule

Solid state synthesis and nonlinear optical properties of MoS_4Ag_2 (PPh_3)_33 and MoS_4Cu_2Ag (PPh_3)_3 Br

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Chinese Science Bulletin 1997年第14期42卷 1184-1189页

作者： LONG Deliang, SHI Shu, MEI Yuhua and XIN XinquanDepartment of chemistry, state key laboratory of coordination chemistry, nanjing university, nanjing 210093, china Department of chemistry State Key Laboratory of Coordination Chemistry Nanjing University Nanjing China

IN recent years, there has been considerable interest in the research of nonlinear optical(NLO) materials. The researches were mainly focused on semiconductors, polymers and dis-crete organic molecules. In contrast, inorganic clusters, a very promising group of com-pounds, have received little attention. It was demonstrated in our previous works thatMo(W)-Cu(Ag)-S cluster compounds exhibit strong third-order nonlinear optical properties.

关键词： cluster compound solid state synthesis nonlinear optical property-