A novel carbazole derivative 2-cyano-3-（9-ethyl-9H-carbazol-3-yl）-acrylic acid ethyl ester（L） was designed and synthesized through Vilsmeier and Knoevenagelreactions, which was characterized by FT-IR, ~1H NMR and1...A novel carbazole derivative 2-cyano-3-（9-ethyl-9H-carbazol-3-yl）-acrylic acid ethyl ester（L） was designed and synthesized through Vilsmeier and Knoevenagelreactions, which was characterized by FT-IR, ~1H NMR and13 C NMR spectra. The crystal of L crystallizes in the monoclinic system, space group P21/c with a = 10.8298（15）, b = 13.4660（19）, c = 15.4358（16） ？, β = 131.214（6）o, V = 1693.4（4） ？~3, Z = 4, Dc = 1.249 g/cm^3, Mr = 318.36, μ = 0.082 mm-1, F（000） = 672, completeness to theta was 99.9% and GOOF = 1.091.Rint = 0.0338, R（I 〉2σ（I）） = 0.0631, w R（I 〉 2σ（I）） = 0.1861, R（all data） = 0.1027 andw R（all data） = 0.2105. There were three types of weak intermolecular interactions（C（8）–H（8）···N（2）, C（14）–H（14）···O（2） and C（20B）– H（20B）···π）among the adjacent molecules to construct a three-dimensional single crystal. The UV-Vis spectra, fluorescence emission and time-dependent density functional theory（TD-DFT） calculation of L were studied and the results revealedthe existence of intramolecular charge transfer（ICT） process of L molecule. The optical properties indicated that it can be used as a potential candidate in the application oforganic light emitting diodes（OLEDs）.展开更多
A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad o...A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad optical absorption band in the range of 450--550 nm and the optical band gap was calculated to be around 2.12 eV. The third-order nonlinear optical susceptibilities （X^（3）） of PMODOPV films implanted by 30-keV N^＋ ions in the dose range of 3.8 × 10^15-9.6 × 10^16 ions/cm^2 were measured by degenerate four-wave mixing （DFWM） technique. The results demonstrated that the resonant and offresonant X^（3） values were all enhanced significantly by means of ion implantation. The maximum resonant X^（3） value of 9.67 × 10^-9 esu at 532 nm and off-resonant X^（3） value of 2.49 × 10^-10 esu at 1.064 μm were obtained when the ion dose was 3.8 × 10^16 ions/cm^2.展开更多
ZnO hexagonal bilayer disk-like microstructures are successfully fabricated using a simple solvothermal method assisted with polyvinylpyrrolidone（PVP）. The structure and morphology were investigated by Xray diffract...ZnO hexagonal bilayer disk-like microstructures are successfully fabricated using a simple solvothermal method assisted with polyvinylpyrrolidone（PVP）. The structure and morphology were investigated by Xray diffraction（XRD）, scanning electron microscopy（SEM）, and energy-dispersive X-ray spectroscopy（EDX）. XRD result indicated that the as-obtained samples were well-crystallized wurtzite hexagonal ZnO structure. SEM images showed that the ZnO hexagonal bilayer disk-like assembles consist of two uniform and smooth disks with an average edge length of 6 μm and thickness of ～4 μm. UV-vis spectrum reveals that ZnO sampls show an appreciable red shift and the band gap energy of the obtained ZnO samples were about 3.15 eV. A very strong ultraviolet（UV） emission at the UV region was observed in the photoluminescence（PL） spectrum of the as-prepared ZnO samples tested at room temperature. A possible growth process of the ZnO hexagonal bilayer disk-like microstructures was schematically illustrated.展开更多
A novel imidazole derivative with functional group and π-conjugated system, 1- [trans-4-（4-diethylaminostyryl）phenyl]imidazole （abbreviated as L）, and its Con complex （COCl2L4）2 （Co2C168H184N24Cl4, Mr = 2799....A novel imidazole derivative with functional group and π-conjugated system, 1- [trans-4-（4-diethylaminostyryl）phenyl]imidazole （abbreviated as L）, and its Con complex （COCl2L4）2 （Co2C168H184N24Cl4, Mr = 2799.05 ） have been synthesized and the crystal structure of the latter was determined by X-ray diffraction. The crystal is of triclinic, space group PI with a = 8.823（3）, b = 18.799（7）, c =23.065（9） A, α = 77.349（6）, β = 83.128（7）, ）, γ= 80.942（3）°, V = 3671.5（12） A^3, Z = 1, Dc = 1.266 g/cm^3,/z = 0.361 mm^-1 F（000） = 1482, the final R = 0.0587 and wR = 0.1284 for 6562 observed reflections with I 〉 2σ（I）. In the molecular structure of （COCl2L4）2, there are two crystallographically unique units. The Co^Ⅱ atoms are six-coordinated by four N atoms from four imidazole ligands （L） and two Cl atoms to form a distorted octahedral geometry. The optical properties of complex （COCl2L4）2 have been experimentally studied.展开更多
A novel bis（β-diketonate） derivate, 3,6-bis（4,4,4-trifluorobutane-1,3-dione）-9-n- butylcarbazole 1, was synthesized and structurally characterized by single-crystal X-ray diffrac- tion. The crystal belongs to the...A novel bis（β-diketonate） derivate, 3,6-bis（4,4,4-trifluorobutane-1,3-dione）-9-n- butylcarbazole 1, was synthesized and structurally characterized by single-crystal X-ray diffrac- tion. The crystal belongs to the monoclinic system, space group P2 1/c with a = 10.961（6）, b = 22.942（13）, c = 9.408（6）A, α = 90, β = 109.663（9）, y = 90°, V = 2228（2）A^3, Z = 4, Dc = 1.489 g/cm^3, C24H19F6NO4, Mr = 499.40, F（000） = 1024 and μ = 0.134 mm^-1. The structure was refined to the final R = 0.0699 and wR = 0.1627 for 3744 independent reflections （Rint = 0.1288） and 1349 observed reflections （I 〉 2σ（I））. Compound 1 consists of carbazole unit and two terminal diketonate groups, in which carbazole and its two adjacent diketonate rings are almost coplanar. Moreover, compound 1 was characterized with IR, elemental analysis, IH NMR, MS, electronic absorption, and single-photon fluorescence.展开更多
基金Supported by the Natural Science Foundation of Anhui Province(1508085SMB208)the Educational Commission of Anhui Province(KJ2016A788)
文摘A novel carbazole derivative 2-cyano-3-（9-ethyl-9H-carbazol-3-yl）-acrylic acid ethyl ester（L） was designed and synthesized through Vilsmeier and Knoevenagelreactions, which was characterized by FT-IR, ~1H NMR and13 C NMR spectra. The crystal of L crystallizes in the monoclinic system, space group P21/c with a = 10.8298（15）, b = 13.4660（19）, c = 15.4358（16） ？, β = 131.214（6）o, V = 1693.4（4） ？~3, Z = 4, Dc = 1.249 g/cm^3, Mr = 318.36, μ = 0.082 mm-1, F（000） = 672, completeness to theta was 99.9% and GOOF = 1.091.Rint = 0.0338, R（I 〉2σ（I）） = 0.0631, w R（I 〉 2σ（I）） = 0.1861, R（all data） = 0.1027 andw R（all data） = 0.2105. There were three types of weak intermolecular interactions（C（8）–H（8）···N（2）, C（14）–H（14）···O（2） and C（20B）– H（20B）···π）among the adjacent molecules to construct a three-dimensional single crystal. The UV-Vis spectra, fluorescence emission and time-dependent density functional theory（TD-DFT） calculation of L were studied and the results revealedthe existence of intramolecular charge transfer（ICT） process of L molecule. The optical properties indicated that it can be used as a potential candidate in the application oforganic light emitting diodes（OLEDs）.
基金This work was supported by the National Natural Sci-ence Foundation of China under Grant No. 60277002 the Scientific Research Foundation of Xi'an Jiao-tong University.
文摘A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad optical absorption band in the range of 450--550 nm and the optical band gap was calculated to be around 2.12 eV. The third-order nonlinear optical susceptibilities （X^（3）） of PMODOPV films implanted by 30-keV N^＋ ions in the dose range of 3.8 × 10^15-9.6 × 10^16 ions/cm^2 were measured by degenerate four-wave mixing （DFWM） technique. The results demonstrated that the resonant and offresonant X^（3） values were all enhanced significantly by means of ion implantation. The maximum resonant X^（3） value of 9.67 × 10^-9 esu at 532 nm and off-resonant X^（3） value of 2.49 × 10^-10 esu at 1.064 μm were obtained when the ion dose was 3.8 × 10^16 ions/cm^2.
基金supported by the Shanghai Municipal Natural Science Foundation (Nos.17ZR1411000,14ZR1417100)the Key Subject of Shanghai Polytechnic University (No. 4:Material Science and Engineering, XXKZD1601)
文摘ZnO hexagonal bilayer disk-like microstructures are successfully fabricated using a simple solvothermal method assisted with polyvinylpyrrolidone（PVP）. The structure and morphology were investigated by Xray diffraction（XRD）, scanning electron microscopy（SEM）, and energy-dispersive X-ray spectroscopy（EDX）. XRD result indicated that the as-obtained samples were well-crystallized wurtzite hexagonal ZnO structure. SEM images showed that the ZnO hexagonal bilayer disk-like assembles consist of two uniform and smooth disks with an average edge length of 6 μm and thickness of ～4 μm. UV-vis spectrum reveals that ZnO sampls show an appreciable red shift and the band gap energy of the obtained ZnO samples were about 3.15 eV. A very strong ultraviolet（UV） emission at the UV region was observed in the photoluminescence（PL） spectrum of the as-prepared ZnO samples tested at room temperature. A possible growth process of the ZnO hexagonal bilayer disk-like microstructures was schematically illustrated.
基金This work was supported by the National Natural Science Foundation of China (50532030, 50335050, and 50325311) and Education Committee of Anhui Province (2006KJ158B)
文摘A novel imidazole derivative with functional group and π-conjugated system, 1- [trans-4-（4-diethylaminostyryl）phenyl]imidazole （abbreviated as L）, and its Con complex （COCl2L4）2 （Co2C168H184N24Cl4, Mr = 2799.05 ） have been synthesized and the crystal structure of the latter was determined by X-ray diffraction. The crystal is of triclinic, space group PI with a = 8.823（3）, b = 18.799（7）, c =23.065（9） A, α = 77.349（6）, β = 83.128（7）, ）, γ= 80.942（3）°, V = 3671.5（12） A^3, Z = 1, Dc = 1.266 g/cm^3,/z = 0.361 mm^-1 F（000） = 1482, the final R = 0.0587 and wR = 0.1284 for 6562 observed reflections with I 〉 2σ（I）. In the molecular structure of （COCl2L4）2, there are two crystallographically unique units. The Co^Ⅱ atoms are six-coordinated by four N atoms from four imidazole ligands （L） and two Cl atoms to form a distorted octahedral geometry. The optical properties of complex （COCl2L4）2 have been experimentally studied.
基金This work was supported by the National Natural Science Foundation of China (No. 50532030, 50325311, 50335050)Scientific Research & Development Foundation of Hefei University (No. 07KY003ZR)
文摘A novel bis（β-diketonate） derivate, 3,6-bis（4,4,4-trifluorobutane-1,3-dione）-9-n- butylcarbazole 1, was synthesized and structurally characterized by single-crystal X-ray diffrac- tion. The crystal belongs to the monoclinic system, space group P2 1/c with a = 10.961（6）, b = 22.942（13）, c = 9.408（6）A, α = 90, β = 109.663（9）, y = 90°, V = 2228（2）A^3, Z = 4, Dc = 1.489 g/cm^3, C24H19F6NO4, Mr = 499.40, F（000） = 1024 and μ = 0.134 mm^-1. The structure was refined to the final R = 0.0699 and wR = 0.1627 for 3744 independent reflections （Rint = 0.1288） and 1349 observed reflections （I 〉 2σ（I））. Compound 1 consists of carbazole unit and two terminal diketonate groups, in which carbazole and its two adjacent diketonate rings are almost coplanar. Moreover, compound 1 was characterized with IR, elemental analysis, IH NMR, MS, electronic absorption, and single-photon fluorescence.
