Qi Fang

Shandong University, Chi-nan-shih, Shandong Sheng, China

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Publications (117)226.87 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: A pyrene-based 2-aryl-benzothiazole derivative, 2-(1'-hydroxypyrenyl)benzothiazole (1H2PBT), was synthesized. Its crystal structure and photophysical properties were investigated. In comparison with the generally studied parent compound, 2-(2'-hydroxyphenyl)benzothiazole (HBT), 1H2PBT exhibited red-shifted absorption and emission in solution, as well as impressive solid state emission with high efficiency (0.35).
    Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 10/2015; 153:669-673. DOI:10.1016/j.saa.2015.09.027 · 2.35 Impact Factor
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    ABSTRACT: Several cyclized indole derivatives have been synthesized, and their structures been determined. The C3-symmetric single-chiral N-phenyltriindole (Tr-Ph3) crystallized in the P1 space group, and the S4-symmetric saddle-like tetraindole (TTr) crystallized in the I4̅ space group. The Tr-Ph3 and TTr crystals exhibit remarkable powder SHG intensities 5 and 11 times that of KH2PO4 (KDP), respectively. TTr is a useful octupolar core to build S4-symmetric molecules and crystals for second-NLO materials.
    Organic Letters 08/2015; 17(17):150825080049004. DOI:10.1021/acs.orglett.5b01912 · 6.36 Impact Factor
  • Shiqian Zhang · Ying Chen · Zhiqiang Liu · Qi Fang ·
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    ABSTRACT: Three regioisomeric sulfone-bridged phenyl-pyrene derivatives have been synthesized by post-oxidizing the corresponding sulfide-bridged phenyl-pyrene isomers. The photophysical properties and two crystal structures of these sulfones were investigated and compared with those of their parent compounds. These sulfones all display remarkable solid-state photoluminescence efficiencies as well as good fluorescence quantum yield in solutions.
    Journal of Photochemistry and Photobiology A Chemistry 06/2015; 311. DOI:10.1016/j.jphotochem.2015.06.003 · 2.50 Impact Factor
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    Man Zhang · Yu-Xiang Shen · Qi Fang · Lei Wang · Da-Zhi Li ·
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    ABSTRACT: In the title indolinone derivative, C 10 H 10 INO, all the non-H atoms, except the terminal methyl C atom, are almost coplanar. The molecules are arranged into columns extending along the a -axis direction and interact with the molecules in adjacent columns via C—H...O hydrogen bonds [H...O distance = 2.57 (3) Å] and I...I short contacts of 3.8986 (3) Å. A one-dimensional zigzag iodine chain along the a axis is apparent between two neighbouring columns.
    06/2015; 71(6):712-715. DOI:10.1107/S2056989015009937
  • Ying Chen · Qiang Lv · Zhiqiang Liu · Qi Fang ·
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    ABSTRACT: Two pyrene derivatives were prepared by the condensation between diaminomaleonitrile and 1-pyrene-aldehyde or 2-pyrene-aldehyde. Both of them exhibit high selectivity for Cu2 + and ClO− in combination with significant fluorescence enhancement in certain buffer solutions, respectively.
    Inorganic Chemistry Communications 02/2015; 52. DOI:10.1016/j.inoche.2014.12.011 · 1.78 Impact Factor
  • Lei Wang · Man Zhang · Ying‐Ying Jin · Qing Lu · Qi Fang ·
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    ABSTRACT: Three 1-phenylindolin-2-one derivatives, namely 1-phenylindolin-2-one, C14H11NO, (I), 5-bromo-1-phenylindolin-2-one, C14H10BrNO, (II), and 5-iodo-1-phenylindolin-2-one, C14H10INO, (III), have been synthesized and their structures determined. Compounds (I) and (II) crystallized in the centrosymmetric space groups Pbca and P21/c, respectively, while compound (III) crystallized in the polar space group Aea2. Density functional theory (DFT) calculations show that the molecular dipole moment gradually decreases in the order (I) > (II) > (III). The relatively smaller dipole moment of (III) and the larger non-electrostatic intermolecular interactions may be the main reasons for the noncentrosymmetric and polar structure of (III).
    Acta crystallographica. Section C 01/2015; 71(1). DOI:10.1107/S2053229614026874
  • Qi Fang · Hong-feng Chen · Hong Lei · Gang Xue · Xia Chen ·
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    ABSTRACT: By pi-extending and ring-capping the bis-fused TTF moiety (namely TTP), several electrically conductive crystals of 12-S-atom TTP derivatives have been synthesized: (1) bis(vinylenedithio)-TTP which can be isolated as triclinic P-1 (t-BV-TTP) and monoclinic P21 (m-BV-TTP) polymorphs separately, (2) bis(ethylenedithio)-TTP (BE-TTP), (3) ethylenedithio-methylenedithio-TTP (EM-TTP), (4) ethylenedithio-vinylenedithio-TTP (EV-TTP). The structure of t-BV-TTP and EM-TTP crystals can be classified as all-parallel beta-type, in which all molecules in the same 2-D molecular slab or in different slabs are all parallel packed. Differently, m-BV-TTP and BE-TTP crystals can be described as herring-bone beta-type, in which the molecules in neighbouring 2-D slabs are alternately in two directions. Among the above four beta-type structures, EM-TTP crystal shows highest conductivity (sigma= 7×10-3 omega-1cm-1 along [100] direction). The EV-TTP crystal belongs to a kind of three-by-three kappa-type structure and its conductivity was measured to be 3×10-3 omega-1cm-1 along [100] direction. The calculated hole mobilities of the title TTP derivatives, by DFT method and by the host-caged approach, are larger than that of the dithiophene-TTF (DT-TTF) crystal.
    CrystEngComm 11/2014; 17(4). DOI:10.1039/C4CE01928H · 4.03 Impact Factor
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    ABSTRACT: There are two independent mol-ecules in the asymmetric unit of the title compound, C10H8INO2, which differ in the degree of planarity. The iodo-indoline-2,3-dione skeleton of mol-ecule 1 is essentially planar [mean deviation = 0.003 (2) Å for the nine non-H atoms of the indoline core, with a maximum deviation of 0.033 (1) Å for the I atom]. The I atom and O atom in the 3-position of mol-ecule 2 deviate by 0.195 (1) and 0.120 (2) Å, respectively, from the least-squares plane through the nine non-H atoms of the indoline core. Mol-ecules 1 and 2 are roughly coplanar, the mean planes through their cores making a dihedral angle of 6.84 (1)°. This coplanarity results in a layer-like structure parallel to (6,11,17) in the crystal, the distance between adjacent least-squares planes through the cores of mol-ecules 1 and 2 being 3.37 (1) Å. In such a layer, mol-ecules 1 and 2 are linked by C-H⋯O hydrogen bonds, forming chains along [11-1]. The chains are further coupled to construct a kind of double-chain structure via I⋯O inter-actions [3.270 (2) Å].
    Acta Crystallographica Section E Structure Reports Online 02/2014; 70(Pt 1):o67. DOI:10.1107/S1600536813033539 · 0.35 Impact Factor
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    ABSTRACT: Three regioisomeric sulfur-bridged pyrene-thienoacenes (PTAs) have been synthesized. The crystal structures and optoelectronic properties of these ring-fused PTAs and their ring-opened precursors have been fully investigated. Among these isomers, the [3,4]-extended compound (4-S-PTA) shows the most pronounced spectral red-shift and highest quantum yield as well as large transistor mobility.
    Organic Letters 01/2014; 16(2). DOI:10.1021/ol402971n · 6.36 Impact Factor
  • Lin Ma · Yunhui Sun · Duxia Cao · Huihui Chen · Zhiqiang Liu · Qi Fang ·
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    ABSTRACT: Three aurone derivatives, Z-2-[(4-N,N-dimethylaminophenyl)methylene] benzofuran-3-one (1), Z-2-[(N-ethylcarbazol-3-yl)methylene]benzofuran-3-one (2) and Z-2-[(pyren-1-yl)methylene]benzofuran-3-one (3) have been synthesized by the cyclization of 2'-hydroxychalcones. Their crystal structure, single- and two-photon related absorption and fluorescence properties have been examined. Pumped by 860nm laser pulses in femtosecond regime, the compounds exhibit strong yellow-green two-photon excited fluorescence at 539nm (1), 505nm (2) and 524nm (3) in THF with two-photon absorption (TPA) cross-section being 1536GM (1), 608GM (2) and 236GM (3).
    Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 11/2012; 103C:120-124. DOI:10.1016/j.saa.2012.11.018 · 2.35 Impact Factor
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    ABSTRACT: Two 3-amidocoumarin derivatives have been utilized as doubly activated Michael acceptors to selectively and sensitively trap cyanide with remarkable colorimetric and fluorescent response. Single-crystal structures of the cyanide adducts clearly confirm Michael additions taking place at the 4-position of coumarin, then an unexpected intramolecular cyclization reaction between the cyano and amido groups occurring.
    Sensors and Actuators B Chemical 11/2012; 174:500–505. DOI:10.1016/j.snb.2012.08.061 · 4.10 Impact Factor
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    ABSTRACT: Three o-hydroxy chalcone derivatives 1–3 with carbazolyl (1), pyrene (2) and 4-nitrobenzene (3) as terminal group have been synthesized. Their crystal structures, photophysical properties in CH3CN and recognition properties for cyanide anions have also been examined. The research indicates that the stronger electroaffinity of the chalcone derivative's β-unit is beneficial to Michael reaction and can improve the response rate of the compound to cyanide anions. These compounds are found to be able to recognize cyanide anions with fluorescence turn-on response. Especially, compound 3 with strong electron accepting group exhibits remarkable response to cyanide anions in CH3CNH2O (1:1, v/v) solution with a ca. 40-fold intensity enhancement.
    Journal of Photochemistry and Photobiology A Chemistry 09/2012; 244:65–70. DOI:10.1016/j.jphotochem.2012.06.012 · 2.50 Impact Factor
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    ABSTRACT: Two thiophene-functionalized octupolar triindole molecules were synthesized through Suzuki and Sonogashira cross-coupling reactions. Their photophysical and electrochemical properties were explored. The spectroscopic data demonstrate that triindole is an excellent rich electronic central donor for building octupolar optoelectronic molecules and possesses excellent luminescent properties. Thiophenylethynyl substituted triindole compound 3,8,13-tri(2-thiophenylethynyl)-5,10,15-tributyltriindole forms an intermolecular aggregation induced by π-π stacking from the rigid coplanar molecular scaffold. The redox curves and results of theoretical calculation imply that the two compounds have low ionization potential and low E(1/2 oxd), which may be originated from the high electronic density of both triindole and thiophene groups.
    Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 08/2012; 96:1020-4. DOI:10.1016/j.saa.2012.08.008 · 2.35 Impact Factor
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    ABSTRACT: The first direct borylation of a C-H bond at the 4-position of pyrene was achieved using [Ir(COD)Cl](2)/dtbpy as the catalyst precursor and B(2)pin(2) as the boron source. The position-related photophysical properties of pyrene derivatives are reported.
    The Journal of Organic Chemistry 07/2012; 77(16):7124-8. DOI:10.1021/jo301293w · 4.72 Impact Factor
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    ABSTRACT: Two novel octupolar organoboron compounds, namely 1,3,5-tris[5-(dimesitylboryl)thiophen-2-yl]terthienobenzene and 1,3,5-tris[4-(dimesitylboryl)phenyl]terthienobenzene, symmetrically extended from terthienobenzene (TTB) with dimesitylboryl groups as electron acceptors have been synthesized. These TTB derivatives exhibited strong blue-green emission in common solvents under single or two-photon excitation (Φfl > 30%), as well as good thermal stability (Tg > 150 °C).
    Synthetic Metals 03/2012; 162(s 3–4):291–295. DOI:10.1016/j.synthmet.2011.12.008 · 2.25 Impact Factor
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    Hua-Wen Wen · Li-Xia Fan · Li Liu · Ao Li · Qi Fang ·
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    ABSTRACT: The title mol­ecule, C4OS5, is essentially planar, with an r.m.s. deviation of 0.032 (3) Å. All the C—S single bonds are shorter than the standard Csp 3—S single-bond length, showing the π-conjugated nature of the molecule. In the crystal, molecules lie parallel to one another and pack in columns along the a axis. Short inter­molecular S⋯S contacts [3.314 (3), 3.482 (2) and 3.501 (2) Å] are observed between the columns. The angle between the two mol­ecular dipole moments in the unit cell is 39.3 (1)° and the macro-polarization vector is along the [1 0 − 1.41] direction. As a result of the high polarization and π-conjugation of the structure, the crystalline powder exhibits a second harmonic generating intensity, which is as strong as that of the urea standard powder crystals, when irradiated by a 1053 nm laser beam. The diffraction space of the crystal showed a nonmerohedral twinning.
    Acta Crystallographica Section E Structure Reports Online 03/2012; 68(Pt 3):o721. DOI:10.1107/S1600536812005703 · 0.35 Impact Factor
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    Hua-Wen Wen · Qi Fang ·
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    ABSTRACT: In the title compound, C(5)H(2)S(4), the terminal monocyclic S atom deviates by 0.117 (1) angstrom from the mean plane of the other non-H atoms (r.m.s. deviation = 0.001 angstrom). All six C-S bonds and the central C-C bond in the rings are characterized by pi-conjugated lengths, endowing the molecule with high pi-conjugation. In the crystal, the molecules are parallel packed, forming columnar stacks along the a axis. Short intermolecular S center dot center dot S contacts [3.397 (1) and 3.486 (1) angstrom], are observed.
    Acta Crystallographica Section E Structure Reports Online 11/2011; 67(Pt 11):o3097. DOI:10.1107/S1600536811044084 · 0.35 Impact Factor
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    ABSTRACT: A trivalent organoboron compound with diethylamino as an electron donor group and dimesitylboryl as an electron acceptor group has been synthesized. Its single- and two-photon excited fluorescence properties have been examined. Pumped by 820nm laser pulses in femtosecond regime, it showed strong two-photon excited fluorescence at 527nm in toluene with two-photon absorption cross-section being 859GM. The compound has been found to be a sensitive chemosensor for fluoride and cyanide anions in THF solutions.
    Journal of Molecular Structure 08/2011; 1000(1):145-149. DOI:10.1016/j.molstruc.2011.06.008 · 1.60 Impact Factor
  • Mao-Sen Yuan · Qi Fang · Yan-Rong Zhang · Qi Wang ·
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    ABSTRACT: Three thiophenevinyl substituted one-, two-, and three-branched truxene π-conjugated compounds TS1, TS2 and TS3 have been prepared using a Heck reaction. Their linear absorption, single- and two-photon excited fluorescence were examined. The three analogues emit blue fluorescence at 420 nm. The number of branches has no influence on the position of the absorption maxima of the charge transfer band and fluorescence emitting maxima. However, the molar extinction coefficients of charge transfer band increase almost linearly with the number of branches. The two-photon absorption cross-section of the octupolar three-branched compound TS3 is several times that of the two-branched compound TS2 and one-branched compound TS1.
    Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 05/2011; 79(5):1112-5. DOI:10.1016/j.saa.2011.04.029 · 2.35 Impact Factor
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    ABSTRACT: A new BEDT-TTF-based radical salt, β-(BEDT-TTF)(HSO4) [BEDT-TTF=bis(ethylenedithio)tetrathiafulvalene], has been synthesized by oxidative electrocrystallization. The crystal structure was determined by four-circle X-ray diffraction. The crystal belongs to monoclinic system, C2/c space group with the unit cell parameters of: a=1.5996(2)nm, b=1.06173(10)nm, c=1.15083(11)nm, β=120.534(8)°, V=1.6834(3)nm3, and R=0.0611. In the title crystal, the BEDT-TTF radicals are stacked to form columns along the [101] axis and the molecular planes of BEDT-TTFs in adjacent columns are parallel to each other. The inter-stack side-by-side S…S short contacts along the b-axis help to form a kind of cationic conducting sheet parallel to (101) plane. The room temperature conductivity at certain direction on (101) plane of β-(BEDT-TTF)(HSO4) single crystal was measured to be 11.7Scm−1. From 100K to 290K, the resistivity–temperature curve demonstrates its typical semiconductivity with an excitation energy of 0.26eV.
    Synthetic Metals 03/2011; 161(5):365-368. DOI:10.1016/j.synthmet.2010.11.035 · 2.25 Impact Factor

Publication Stats

2k Citations
226.87 Total Impact Points


  • 1998-2015
    • Shandong University
      • • State Key Laboratory for Crystal Materials
      • • Institute for Crystal Materials
      Chi-nan-shih, Shandong Sheng, China
  • 2007
    • Durham University
      • Department of Chemistry
      Durham, England, United Kingdom
  • 1999-2003
    • University of Jinan (Jinan, China)
      Chi-nan-shih, Shandong Sheng, China
  • 2000
    • Sun Yat-Sen University of Medical Sciences
      • Department of Obstetrics and Gynecology
      Shengcheng, Guangdong, China