Synthesis of di-μ-OXO-tetra-（α-pentyloxy） tin（Ⅳ） phthalocyanine

Axially substituted tin phthalocyanines, namely dichloride-tetra-（α-pentyloxy） tin （Ⅳ） phthalocyanine 2, dihydroxy-tetra-（α-pentyloxy） tin （Ⅳ） phthalocyanine 3 and its dimmer di-μ-oxo-tetra-（α-pentyloxy） tin（Ⅳ） phthalocyanine 4 were synthesized. The catalytic effect of H2O-free CaCl2 in quinoline was used for condensation of dihydroxy tin phthalocyanine 3 to the cofacially array dimmer 4. Their structures were characterized by UV-vis, IR, elemental analysis, MS, as well as ^1HNMR spectroscopy.     

C–H Arylation using acyl thiourea ligands: Applications in the synthesis of 3,6-diaryl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles

Synthesis of a series of new 3,6-diaryl-[1,2,4]triazolo[3,4-b] [1,3,4]thiadiazoles(5a–o) was achieved by phophine free, C–H arylative cross-coupling of 6-aryl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles(4a–o)with suitably substituted iodoanilines using 1-(2-naphthoyl)-3-(4-bromophenyl)thiourea as a ligand.The requisite triazolothiadiazoles(4a–o) were obtained by the condensation of 4-amino-1,2,4-triazole-3-thiol(3) with suitably substituted aromatic acids in the presence of phosphoryl chloride.     

Covalent Functionalization of Carbon Nanotube by Tetrasubtituted Amino Manganese Phthalocyanine

The multiwall carbon nanotube (MWCNT) bonded to 2, 9, 16, 23-tetraamino manganese phthalocyanine (TAMnPc) was obtained by covalent functionalization, and its chemical structure was characterized by TEM. The photoconductivity of single-layered photoreceptors, where MWCNT bonded by TAMnPc (MWCNT-b-TAMnPc) served as the charge generation material(CGM), was also studied.     

Preparation and characterization of mesoporous tetragonal sulfated zirconia

Mesoporous tetragonal sulfated zirconia with high surface area and narrow pore-size distribution was prepared using Zr(O-nPr)_4 as zirconium precursor,sulfuric acid as sulfur source and triblock copolymer poly(ethylene glycol)-poly(propylene glycol)-poly (ethylene glycol)(P123) as the template.The samples were characterized by X-ray diffraction,N_2 sorption,TEM,and NH_3-TPD. A phase transformation from monoclinic sulfated zirconia to tetragonal sulfated zirconia is observed.The product shows strong acidi...     

POLYIONIC COMPLEXES DERIVED FROM POLYVINYL ALCOHOL Ⅱ. WATER ABSORBILITY AND ANTITHROMBOGENECITY OF PVA-TYPE POLYIONIC COMPLEXES*

Effect of both structure of substituents and degree of substitution of polyions derived from poly-vinyl alcohol on water-absorbility and antithrombogenecity of formed polyionic complexes (PIC)have been investigated. It was found that the water content of the PIC formed from p-formylben-zenesulfonic acid substituted PVA was higher than that of the PIC formed from p-formylbenzoicacid substituted PVA. When the substitution degree of polycation increased from 27% to 64%,the water content of the formed PIC increased from 170% to 1270%. Effect of water content andnet charge of PVA-type PIC on the antithrombogenecity was also investigated by plasma recalci-fication method.     

Preparation of polymer brushes on attapulgite surfaces via a combination of CROP and click reaction

<正>In this work,by a combination of controlled ring-opening polymerization(CROP) and click reaction,we reported a facile and useful method to synthesize linear poly(ε-caprolactone) at attapulgite nanocomposites with well-defined structures.For this,first, the chlorine terminated attapulgite was prepared by the self-assembly of 3-chloropropyltrimethoxysiIane from the surfaces of attapulgite.And then,the terminal chlorines of modified attapulgite were substituted with azido groups.As the second step,linear propargyl-terminated poly(ε-caprolactone)(PCLs) with different molecular weights were synthesized by the CROP ofε-CL monomer in toluene with Sn(Oct)_2 as a catalyst and propargyl alcohol as an initiator.Finally,the azido-terminated attapulgites were reacted with propargyl-terminated PCLs via the click reactions.     

SYNTHESIS OF PPCuPc FILM BY MICROWAVE PLASMA CHEMICAL VAPORIZATION DEPOSITION(MPCVD)

Using a low power microwave generator(W_(max)=100W) and a Surfatron discharge device, Plasma-polymerized copper phthalocyanine (PPCuPc) film was synthesised from monomer copper phthalocyanine(CuPc) by microwave plasma chemical vaporization deposition(MPCVD) with Ar as incorporation gas. The film was characterized by FTIR and ESCA. The role of dissociation of chemical bond in the polymerization process and the influence of substrate temperature and material on deposition were investigated in some detail.     

单氨基取代3∶1不对称酞菁锌的合成及其在有机溶剂中聚集状态的研究

Monoamino substituted asymmetrical phthalocyanine zinc(Ⅱ), 2-amino-9,10,16,17,23,24-hexapentyloxy phthalocyanine zinc(Ⅱ), was synthesized by statistical condensation and characterized by elemental analysis, UV-Vis, IR and TOF-MS. The aggregative behavior was studied in DMF, THF and CH₂Cl₂. The results show that it is not aggregateve in DMF and THF, whereas form dimer in CH₂Cl₂ at 8 × 10^-7～8 × 10^-6 mol·L^-1. The equilibrium constant for the dimer was calculated at the same time, indicating that the less polar solvent is unfavorable for the presence of the monomer.     

Gambogic acid-encapsulated polymeric micelles improved therapeutic effects on pancreatic cancer

Monomethyl poly(ethylene glycol)-poly(ε-caprolactone)-poly(trimethylene carbonate) (MPEG-P(CL-ran-TMC)) copolymer was synthesized, which could encapsulate GA by a single-step solid dispersion and form nano-sized micelles. The MPEG-P(CL-ran-TMC) based nano-formulation of GA could improve the anti-tumor effect in vivo, which may serve as a candidate for pancreatic cancer therapy.     

Polystyrene-supported Palladium(II) Ethylenediamine Complex: A Recyclable Catalyst for the Syntheses of 2-Benzyl- imidazo[2,1-b][1,3]benzothiazoles by Sonogashira Reaction

The polymer-supported palladium(II) ethylenediamine complex was used as a catalyst for the heterocyclization during Sonogashira reaction between a substituted phenyl iodide and 2-amino-3-(2-propynyl)-1,3-benzothiazolium bromide, which could readily be recovered from the reaction medium by a simple filtration, and reused without a significant loss in its activity.     

Facile and efficient synthesis of 2-substituted-Nl-carbethoxy-2,3-dihydro-4(1H)-quinazolinones in fluorous solvent

A facile,efficient and novel approach to access 2-substituted-N_1-carbethoxy-2,3-dihydro-4(1H)-quinazolinones was developed by condensation of substituted N-carbethoxyanthranilamide with alkyl,aromatic or heteroaromatic aldehydes in the refluxing 2,2,2- trifluoroethanol or hexafluoroisopropanol using p-toluenesulfonic acid as catalyst.     

PREPARATION AND PROPERTIES OF TETRA (p-VINYLPHENOXY) METALLOPHTHALOCYANINES

This paper describes the preparation and Langmuir-Blodgett (LB) monomolecular film formation of H_2, Cu, Ni, Co, and Zn phthaloeyanine compounds with p-vinyiphenoxy peripheral substituent on each benzo ring at either 2- or 3- position [i.e., tetra (p-vinylphenoxy) substituted isomer mixture]. These phthalocyanine derivatives form stable LB films at the film pressures greater than 10 dynes/cm. The surface pressure-area isotherms indicate that the phthalocyanine units are densely packed with a eofacial orientation. Schottky cells of [Indium-Tin Oxide/LB film/Al] were prepared and their electronic properties were examined. Much better rectifying properties, diode parameter, break-down potential and mechanical strength were notified by the post-polymerization of LB-layers. On exposing the polymerized films to tetrahydrofuran vapor, the absorption maxima of Q-band shift bathochromically by about 100 nm, being sensitive to diode laser light.     

Theoretical Study on the Structure and Stability of Si5X （X = Li, Be, B, C, N, O, F, Na, Mg, Al, Si, P, S, Cl） Clusters

1 INTRODUCTION In the later 60s of last century, silicon substituted for germanium to present as mainstream in semicon- ductor. The semi-conductive devices made by silicon have many advantages, for example, refractory pro- perty, high radioresistance, simple and stable process- ing technic, high machinability and low cost. So it was widely used to manufacture large power appara- tuses, for instance, digit and linear integrated circuit, large scale integrated circuit (LSI), etc. Thus, th…     

Synthesis and Crystal Structure of 2,6-Bis（2-pyridinylmethyl）-3,5-bis（2-hydroxyl-5-chlorophenyl）pyrazine

The title compound,2,6-bis(2-pyridinylmethyl)-3,5-bis(2-hydroxyl-5-chlorophe nyl)-pyrazine(C26H12Cl2N4O2C2H8O2,Mr=551.41),has been synthesized and characterized by LC-ESIMS,NMR,UV and IR spectroscopy as well as by X-ray single-crystal diffraction.The compound behaves as a substituted pyrazine.The hydrogen atoms on C(2) and C(3) are substituted by 2-pyridinyl,whereas those on C(1) and C(4) are substituted by 2-hydroxyl-5-chlorophenyl.It crystallizes in the monoclinic system,space group P21/c with a=8.9433(12),b=32.003(4),c=10.5209(18),β=111.199(2)°,V=2807.5(7)3,Z=4,Dc=1.305 mg/m3,F(000)=1144 and μ=0.094 mm-1.A total of 13235 reflections were collected in the range of 2.17～25.01o by using a phi and omega scan mode,of which 4923 were unique(Rint=0.0692) and 2872 observed reflections with Ⅰ > 2σ(Ⅰ) were used in the structure solution and refinement.     

Enhancing the Crystallization Performance of Poly(L-lactide) by Intramolecular Hybridizing with Tunable Self-assembly-type Oxalamide Segments

In this work, hydroxyl-terminated oxalamide compounds N~1,N~2-bis(2-hydroxyethyl)oxalamide(OXA1) and N~1,N~(1′)-(ethane-1,2-diyl)bis(N2-(2-hydroxyethyl)oxalamide(OXA2) were synthesized to initiate the ring-opening polymerization of L-lactide for preparation of oxalamide-hybridized poly(L-lactide)(PLA_(OXA)), i.e., PLA_(OXA1) and PLA_(OXA2). The crystallization properties of PLA were improved by the self-assembly of the oxalamide segments in PLA_(OXA) which served as the initial heterogeneous nuclei. The crystal growth kinetics was studied by HoffmanLauritzen theory and it revealed that the nucleation energy barrier of PLA_(OXA1) and PLA_(OXA2) was lower than that of PLA. Consequently, PLA_(OXA) could crystallize much faster than PLA, accompanied with a decrease in spherulite size and half-life crystallization time by 74.8% and 86.5%(T=125 ℃), respectively. In addition, the final crystallinity of PLA_(OXA1) and PLA_(OXA2) was 6 and 8 times higher, respectively, in comparison with that of neat PLA under a controlled cooling rate of 10 ℃/min. The results demonstrate that the hybridization of oxalamide segments in PLA backbone will serve as the self-heteronucleation for promoting the crystallization rate. The higher the content of oxalamide segments(PLA_(OXA2) compared with PLA_(OXA1)) is, the stronger the promotion effect will be. Therefore, this study may provide a universal approach by hybridizing macromolecular structure to facilitate the crystallization of semi-crystalline polymer materials.     

SYNTHESIS,CHARACTERIZATION AND PHOTOLUMINESCENT PROPERTIES OF NEW PLATINUM-CONTAINING POLY(FLUORENYLENEETHYNYLENE) ANCHORED WITH CARBAZOLE PENDANTS

A new luminescent and thermally stable platinum(Ⅱ) polyyne polymer trans-[-Pt(PBu_3)_2C=CArC=C-]_n(P1) containing the 2,7-fluorene chromophoric spacer substituted by pendant carbazolyl group via long alkyl bridges. The regiochemical structures of these compounds were studied by various spectroscopic analyses.We report the photophysical properties of this group 10 polymetallayne and a comparison was made to its binuclear model complex trans-[Pt(Ph)(PEt_3)_2C≡CArC≡CPt(Ph)(PEt_3)_2](M1) as well as to those ...     

Dicobalt Complex with Metal-metal Interaction of a Naphthyridine and Pyrazine Amine Ligand

Molecular structure of a naphthyridine and pyrazine amine ligand, N~2,N~7-di(pyrazin-2-yl)-1,8-naphthyri-dine-2,7-diamine(H2dpznda 1) was studied, and a three-dimensional supramolecular network with a double helix chain structure through intermolecular hydrogen bonds and π-π interactions between the naphthyridine and pyrazine rings was depicted. Through ligand 1, [Co_2(μ_2-dpznda)_2(μ_2-CH_3OH)_2](2) was obtained and two ligands coordinate to two Co~(2+) as tetradentate bridging ligands. Single crystal and magnetism study on 2 revealed that the complex exhibited weak yet significant metal-metal interaction.     

Isoxazolone Reactivity Explained by Computed Electronic Structure Analysis

Summary of main observation and conclusion lsoxazol(2H)-5-one was chosen as a model molecule to study the structural features(a,p angles and carbonyl bond length)regarding lactone moiety in the isoxazolone species by computational calculation.DFT method with B3LYP 6-311++G(2df,2p)basis set was used to carry out the optimization on a series(A and B families)of isoxazolones suitably substituted on double bond.     

Synthesis, Characterization and Crystal Structure of （Z）-1-[2-（Triarylstannyl）vinyl]-1-indanols and Their Arylhalostannyl Derivatives

(Z)-1-[2-(Tri-o-tolylstannyl)vinyl]-1-indanol (1) and (Z)-1-[2-(tri-p-tolylstannyl)vinyl]-l-indanol (2) were synthesized by the addition reaction of 1-ethynylindanol with tri-o-tolyltin and tri-p-tolyltin hydride. The aryl groups in compound 1 and 2 were substituted by Br2 or I2 to yield monohalide derivatives (3-6). The compounds 1-6 were characterized by elemental analysis, ^1H NMR and FT-IR spectroscopy. The crystal structures of 1, 2 and 4 have been determined by single crystal X-ray diffraction analysis. The Sn atom in 1 and 2 exhibits a tetrahedral geometry distorted towards trigonal bipyramid due to a weak intramolecular interaction between Sn and the hydroxyl O atoms [0.2839(4) nm and 0.2744(5) nm], while the Sn atom in 4 adopts a trigonal bipyramidal geometry with a significant O→Sn(1) interaction [0.2552(5) nm].