复旦大学  
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Publication

  1. Y. Qiao, L. Yang, J. Zhu, C. Yan, D. Chang, N. Zhang, G. Zhou,* Y. Zhao,* X. Lu,* Y. Liu,* Crystal Engineering of Angular-Shaped Heteroarenes Based on Cyclopenta[b]thiopyran for Controlling the Charge Carrier Mobility, J. Am. Chem. Soc., 2021, 143, 11088–11101.

  2. Y. Chen, W. Chen, Y. Qiao, X. Lu, G. Zhou,* BN-Embedded Polycyclic Aromatic Hydrocarbon Oligomers: Synthesis, Aromaticity, and Reactivity, Angew. Chem. Int. Ed.2020,  59, 7172−7130.

  3. X. Yu, M. Chang, W. Chen, D. Liang, X. Lu, G. Zhou,* Colorless-to-Black Electrochromism from Binary Electrochromes towards Multifunctional Displays, ACS Appl. Mater. Interfaces, 2020, 12, 39505–39514.

  4. M. Chang, W. Chen, H. Xue, D. Liang, X. Lu, G. Zhou,* Conjugation-Extended Viologens with Thiophene Derivatived Bridges: Near-Infrared Electrochromism, Electrofluorochromism and Smart Window Application, J. Mater. Chem. C, 2020, 8, 16129–16142.

  5. Z. Gu, Y. Chen, Z. Wei, L. Qian, A. M. Al-Enizi, J. Ma,* G. Zhou,* G. Zheng,* Precise Tuning of Heteroatom Positions in Polycyclic Aromatic Hydrocarbons for Electrocatalytic Nitrogen Fixation, J. Colloid Interface Sci., 2020, 580, 623–629.

  6. Y. Li, M. Buerkle, G. Li, A. Rostamian, H. Wang, Z. Wang, D. R. Bowler, T. Miyazaki, L. Xiang, Y. Asai,* G. Zhou,* N. Tao,* Gate Controlling of Quantum Interference and Direct Observation of Anti-Resonances in Single Molecule Charge Transport, Nature Mater.201918, 357−363.

  7. Y. Li, H. Wang, Z. Wang, Y. Qiao, J. Ulstrup, H.-Y. Chen,* G. Zhou,* N. Tao,* Transition from Stochastic Events to Deterministic Ensemble Average in Electron Transfer Reactions Revealed by Single-Molecule Conductance Measurement, PNAS2019116, 3407−3412.

  8. Y. Qiao, Y. Lu, W. Chen, Y. Chen, M. Baumgarten, G. Zhou,* Cyclopenta[b]thiopyran and Cyclopenta[b]selenopyran Based Heteroarenes: Electronic Communication Between S- and/or Se-Fused Aromatics, Chem. Commun.201955, 5107−5110.

  9. Y. Chen, W. Chen, Y. Qiao, G. Zhou,* B2N2-Embedded Polycyclic Aromatic Hydrocarbons with Furan and Thiophene Derivatives Functionalized in Crossed Directions, Chem. Eur. J.201925, 9326−9338.

  10. M. Q. Ren, W. Chen, Q. Liu, C. Chen, Y. J. Qiao, Y. J. Chen, G. Zhou, Z. H. Li, T. Zhang, Y. J. Yan,* D. L. Feng,* Observation of Gapped Phases in Potassium-Doped Single-Layer p-Terphenyl on Au (111), Phys. Rev. B201999, 045417.

  11. Y. Lu, Y. Qiao, H. Xue, G. Zhou,* From Colorless to Near-Infrared S-Heteroarene Isomers: Unexpected Cycloaromatization of Cyclopenta[b]thiopyran Catalyzed by PtCl2Org. Lett.201820, 6632−6635.

  12. G. Li, Y. Chen, Y. Qiao, Y. Lu, G. Zhou,* Charge Transfer Switching in Donor-Acceptor Systems Based on BN−Fused Naphthalimides, J. Org. Chem.201883, 5577−5587.

  13. H. Wan, H. Xue, Y. Ling, Y. Qiao, Y. Chen, G. Zhou,* Electron Donor and Acceptor Functionalized Dithienylethenes: Effect of Charge Density on Photochromic Properties, Phys. Chem. Chem. Phys.201820, 14348−14356.

  14. S. Yang, Y. Chen, G. Zhou,* Z.-W. Fu,* Multi-Electron Fused Redox Centers in Conjugated Aromatic Organic Compound as a Cathode for Rechargeable Batteries, J. Electrochem. Soc.2018165, A1422−A1429.

  15. L. Ding, C. Xiang, G. Zhou,* Silica Nanoparticles Coated by Poly(acrylic acid) Brushes via Host-Guest Interactions for Detecting DNA Sequence of Hepatitis B Virus, Talanta2018181, 65–72.

  16. C. Xiang, H. Wan, M. Zhu, Y. Chen, J. Peng, G. Zhou,* Dipicolylamine Functionalized Polyfluorene Based Gel with Lower Critical Solution Temperature: Preparation, Characterization, and Application, ACS Appl. Mater. Inter.20179, 8872–8879.

  17. L. Ding, Z. Qin, C. Xiang, G. Zhou,* Novel Fluorescent Organic Nanoparticles as Label-free Biosensor for Dopamine in Serum, J. Mater. Chem. B20175, 2750–2756.

  18. Y. Ling, C. Xiang, G. Zhou,* Multicolored Electrochromism from Benzodipyrrolidone-Based Ambipolar Electrochromes at a Fixed Potential, J. Mater. Chem. C20175, 290–300.

  19. M. Bürkle, L. Xiang, G. Li, A. Rostamian, T. Hines, S. Guo, G. Zhou, N. Tao,* Y. Asai,* The Orbital Selection Rule for Molecular Conductance as Manifested in Tetraphenyl-Based Molecular Junctions, J. Am. Chem. Soc.2017139, 2989–2993.

  20. L. Xiang, T. Hines, J. L. Palma, X. Lu, V. Mujica, M. A. Ratner, G. Zhou,* N. Tao,* Non-exponential Length Dependence of Conductance in Iodide-terminated Oligothiophene Single-molecule Tunneling Junctions, J. Am. Chem. Soc.2016138, 679–687.

  21. J. Wu, G. Li, L. Zhang, G. Zhou,* Z.-S. Wang, Energy Level Engineering of Thieno[3,4-b]pyrazine based Organic Sensitizers for Quasi-Solid-State Dye-Sensitized Solar Cells, J. Mater. Chem. A20164, 3342–3355.

  22. Y. Chen, Y. Ling, L. Ding, C. Xiang, G. Zhou,* Quinoxaline-Based Cross-Conjugated Luminophores: Charge transfer, Piezofluorochromic, and Sensing properties, J. Mater. Chem. C20164, 8496–8505.

  23. Y. Chen, X. Lu, C. Xiang, Y. Ling, G. Zhou,* Charge Transfer Through Dithieno[2,3-a:3',2'-c]phenazine: Effect of Substitution Pattern on Optoelectronic Properties of Regioisomeric Luminophores, Chem. Asian J.201611, 874–881.

  24. Z. Qin, Y. Wang, X. Lu, Y. Chen, J. Peng, G. Zhou,* Multistimuli-Responsive Luminescence Switching of Pyrazine Derivative Based Donor–Acceptor–Donor Luminophores, Chem. Asian J.201611, 285–293.

  25. S. Fan, X. Lu, H. Sun, G. Zhou, Y. J. Chang, Z.-S. Wang,* Effect of the Co-Sensitization Sequence on the Performance of Dye-Sensitized Solar Cells with Porphyrin and Organic Dyes, Phys. Chem. Chem. Phys.201618, 932–938.

  26. T. Lan, X. Lu, L. Zhang, Y. Chen, G. Zhou,* Z.-S. Wang, Enhanced Performance of Quasi-solid-state Dye-sensitized Solar Cells by Tuning the Building Blocks in D–(π)–A’–π–A Featured Organic Dyes, J. Mater. Chem. A20153, 9869–9881.

  27. Y. Liu, Y. Luo, A. A. Elzatahry, W. Luo, R. Che, J. Fan, K. Lan, A. M. Al-Enizi, Z. Sun, B. Li, Z. Liu, D. Shen, Y. Ling, C. Wang, J. Wang, W. Gao, C. Yao, K. Yuan, H. Peng, Y. Tang, Y. Deng, G. Zheng, G. Zhou, D. Zhao,* Mesoporous TiO2 Mesocrystals: Remarkable Defects-Induced Crystallite-Interface Reactivity and Their in Situ Conversion to Single Crystals, ACS Cent. Sci.20151, 400–408.

  28. G. Wang, H. Sun, L. Ding, G. Zhou, Z.-S. Wang,* Growth of Cu Particles on A Cu2O Truncated Octahedron: Tuning of the Cu Content for Efficient Glucose Sensing, Phys. Chem. Chem. Phys.201517, 24361–24369.

  29. Y. Cui, L. Zhang, K. Lv, G. Zhou, Z.-S. Wang,* Low Temperature Preparation of TiO2 Nanoparticle Chains without Hydrothermal Treatment for Highly Efficient Dye-Sensitized Solar Cells, J. Mater. Chem. A20153, 4477–4483.

  30. S. Fan, K. Lv, H. Sun, G. Zhou, Z.-S. Wang,* The Position Effect of Electron-Deficient Quinoxaline Moiety in Porphyrin Based Sensitizers, J. Power Sources2015279, 36–47.

  31. X. Lu, T. Lan, Z. Qin, Z.-S. Wang, G. Zhou,* A Near Infrared Dithieno[2,3-a:3',2'-c]phenazine-Based Organic Co-Sensitizer for Highly Efficient and Stable Quasi-Solid-State Dye-Sensitized Solar Cells, ACS Appl. Mater. Inter.20146, 19308–19317.

  32. X. Lu, S. Fan, J. Wu, X. Jia, Z.-S. Wang, G. Zhou,* Controlling the Charge Transfer in D−A−D Chromophores Based on Pyrazine Derivatives, J. Org. Chem.201479, 6480−6489.

  33. S. Jiang, S. Fan, X. Lu, G. Zhou,* Z.-S. Wang,* Double D–π–A Branched Organic Dye Isomers for Dye-Sensitized Solar Cells, J. Mater. Chem. A20142, 17153–17164.

  34. X. Jia, W. Zhang, X. Lu, Z.-S. Wang, G. Zhou,* Efficient Quasi-Solid-State Dye-Sensitized Solar Cells Based on Organic Sensitizers Containing Fluorinated Quinoxaline Moiety, J. Mater. Chem. A20142, 19515–19525.

  35. Q. Feng, Q. Zhang, X. Lu, H. Wang, G. Zhou,* Z.-S. Wang,* Facile and Selective Synthesis of Oligothiophene-Based Sensitizer Isomers: An Approach toward Efficient Dye-Sensitized Solar Cells, ACS Appl. Mater. Inter.20135, 8982–8990.

  36. Q. Feng, X. Jia, G. Zhou,* Z.-S. Wang,* Embedding An Electron Donor or Acceptor into Naphtho[2,1-b:3,4-b']dithiophene Based Organic Sensitizers for Dye-Sensitized Solar Cells, Chem. Commun.201349, 7445–7447.

  37. Q. Zhang, X. Lu, Z.-S. Wang, G. Zhou,* Synthesis and Optoelectronic Properties of Donor-Acceptor Molecules Containing Pyromellitic Diimide Chromophore, Chem. Res. Chin. Univ.201329, 1083–1088.

  38. X. Lu, X. Jia, Z.-S. Wang, G. Zhou,* X-shaped Organic Dyes with A Quinoxaline Bridge for Use in Dye-Sensitized Solar Cells, J. Mater. Chem. A20131, 9697–9706.

  39. Q. Feng, G. Zhou,* Z.-S. Wang,* Varied Alkyl Chain Functionalized Organic Dyes for Efficient Dye-Sensitized Solar Cells: Influence of Alkyl Substituent Type on Photovoltaic Properties, J. Power Sources2013239, 16–23.

  40. Y. Shen, K. Deng, M. Li, X. Zhang, G. Zhou,* K. Müllen,* Q. Zeng* and C. Wang,* Self-Assembling in Fabrication of Ordered Porphyrins and Phthalocyanines Hybrid Nano-Arrays on HOPG, CrystEngComm201315, 5526–5531.

  41. W. Zhang, Q. Feng, Z.-S. Wang, G. Zhou,* Novel Thiazolo[5,4-d]thiazole-Based Organic Dyes for Quasi-Solid-State Dye-Sensitized Solar Cells, Chem. Asian J.20138, 939–946.

  42. S. Jiang, X. Lu, G. Zhou,* Z.-S. Wang,* Charge Transfer in Cross Conjugated 4,8-Dithienylbenzo[1,2-b:4,5-b’]dithiophene Based Organic Sensitizers, Chem. Commun.201349, 3899–3901.

  43. Q. Feng, W. Zhang, G. Zhou,* Z.-S. Wang,* Enhanced Performance of Quasi-Solid-State Dye-Sensitized Solar Cell by Branching the Linear Substituent in Thieno[3,4-c]pyrrole-4,6-dione Based Sensitizer, Chem. Asian J.20138, 168–177.

  44. H. Wang, J. Li, F. Gong, G. Zhou, Z.-S. Wang,* Ionic Conductor with High Conductivity as Single-Component Electrolyte for Efficient Solid-State Dye-Sensitized Solar Cells, J. Am. Chem. Soc.2013135, 12627–12633.

  45. Y. Li, H. Wang, Q. Feng, G. Zhou, Z.-S. Wang,* Reduced Graphene Oxide-TaON Composite as a High-Performance Counter Electrode for Co(bpy)33+/2+-Mediated Dye-Sensitized Solar Cells, ACS Appl. Mater. & Inter.20135, 8217–8224.

  46. S. Guo, G Zhou, N. Tao,* Single Molecule Conductance, Thermopower, and Transition Voltage, Nano Lett.201313, 4326–4332.

  47. Y. Li, H. Wang, Q. Feng, G. Zhou, Z.-S. Wang,* Gold Nanoparticles Inlaid TiO2 Photoanodes: a Superior Candidate for High-Efficiency Dye-Sensitized Solar Cells, Energy Environ. Sci.20136, 2156–2165.

  48. J. Li, H. Wang, G. Zhou, Z.-S. Wang,* Hydroxyethyl and Ester Co-functionalized Imidazolium Iodide for Highly Efficient Solid-State Dye-Sensitized Solar Cells, Chem. Commun.201349, 9446–9448.

  49. X. Xu, H. Wang, F. Gong, G. Zhou, Z.-S. Wang,* Performance Enhancement of Dye-Sensitized Solar Cells Using an Ester-Functionalized Imidazolium Iodide as the Solid State Electrolyte, ACS Appl. Mater. & Inter.20135, 3219–3223.

  50. Z. Li, F. Gong, G. Zhou, Z.-S. Wang,* NiS2/Reduced Graphene Oxide Nanocomposites for Efficient Dye-Sensitized Solar Cells, J. Phys. Chem. C2013117, 6561–6566.

  51. Y. Li, Q. Feng, H. Wang, G. Zhou, Z.-S. Wang,* Reduced Graphene Oxide-Ta3N5 Composite: A Potential Cathode for Efficient Co(bpy)33+/2+ Mediated Dye-Sensitized Solar Cells, J. Mater. Chem. A20131, 6342–6349.

  52. F. Gong, X. Xu, G. Zhou, Z.-S. Wang,* Enhanced Charge Transportation in A Polypyrrole Counter Electrode via Incorporation of Reduced Graphene Oxide Sheets for Dye-Sensitized Solar Cells, Phys. Chem. Chem. Phys., 201315, 546–552.

  53. H. Wang, Q. Feng, F. Gong, Y. Li, G. Zhou, Z.-S. Wang,* In situ Growth of Oriented Polyaniline Nanowires Array for Efficient Cathode of Co(III)/Co(II) Mediated Dye-Sensitized Solar Cell, J. Mater. Chem. A20131, 97–104.

  54. F. Gong, X. Xu, Z. Li, G. Zhou, Z.-S. Wang,* NiSe2 as An Efficient Electrocatalyst for A Pt-Free Counter Electrode of Dye-Sensitized Solar Cells, Chem. Commun.201349, 1437–1439.

  55. 宫峰, 周刚, 王忠胜,* 染料敏化太阳能电池对电极材料的研究进展, 科学通报, 201358, 294–304.

  56. X. Lu, Q. Feng, T. Lan, G. Zhou,* Z.-S. Wang,* Molecular Engineering of Quinoxaline-Based Organic Sensitizers for Highly Efficient and Stable Dye-Sensitized Solar Cells, Chem. Mater.201224, 3179–3187.

  57. Q. Feng, X. Lu, G. Zhou,* Z.-S. Wang,* Synthesis and Photovoltaic Properties of Organic Sensitizers Incorporating A Thieno[3,4-c]pyrrole-4,6-dione Moiety, Phys. Chem. Chem. Phys.201214, 7993–7999.

  58. X. Lu, G. Zhou,* H. Wang, Q. Feng, Z.-S. Wang, Near Infrared Thieno[3,4-b]pyrazine Sensitizers for Efficient Quasi-Solid-State Dye-Sensitized Solar Cells, Phys. Chem. Chem. Phys.201214, 4802–4809.

  59. X. Ren, S. Jiang, M. Cha, G. Zhou, Z.-S. Wang,* Thiophene-Bridged Double D-π-A Dye for Efficient Dye-Sensitized Solar Cell, Chem. Mater.201224, 7190–7195.

  60. F. Gong, H. Wang, X. Xu, G. Zhou, Z.-S. Wang,* In Situ Growth of Co0.85Se and Ni0.85Se on Conductive Substrates as High-Performance Counter Electrodes for Dye-Sensitized Solar Cells, J. Am. Chem. Soc.2012134, 10953–10958.

  61. N. Cho, G. Zhou, K. Kamada, R. H. Kim, K. Ohta, S.-H. Jin, K. Müllen, K.-S. Lee,* The Impact of Charge Defects and Resonance Enhancement on the Two-Photon Absorption Activity of Spirofluorene and Ladder-type Pentaphenylene Derivatives, J. Mater. Chem.201222, 185–191.

  62. H. Wang, X. Zhang, F. Gong, G. Zhou, Z.-S. Wang,* Novel Ester-Functionalized Solid-State Electrolyte for Highly Efficient All-Solid-State Dye-Sensitized Solar Cells, Adv. Mater.201224, 121–124.

  63. S. Wang, X. Zhang, G. Zhou, Z.-S. Wang,* Double-Layer Coating of SrCO3/TiO2 on Nanoporous TiO2 for Efficient Dye-Sensitized Solar Cells, Phys. Chem. Chem. Phys.201214, 816–822.

  64. Y. Cui, Y. Wu, X. Lu, X. Zhang, G. Zhou,* F. B. Miapeh, W Zhu,* Z.-S. Wang,* Incorporating Benzotriazole Moiety to Construct D-A-π-A Organic Sensitizers for Solar Cells: Significant Enhancement of Open-circuit Photovoltage with Long Alkyl Group, Chem. Mater.2011, 23, 4394–4401.

  65. I. Diez-Perez, J. Hihath, T. Hines, Z.-S. Wang, G. Zhou,* K. Müllen,* N. Tao,* Controlling Single-Molecule Conductance through Lateral Coupling of π Orbitals, Nature Nanotech.20116, 226–231.

  66. X. Zhang, F. Liu, Q. Huang, G. Zhou, Z.-S. Wang,* Dye-Sensitized W-Doped TiO2 Solar Cells with a Tunable Conduction Band and Suppressed Charge Recombination, J. Phys. Chem. C2011115, 12665–12671.

  67. Q. Huang, G. Zhou, L. Fang, L. Hu, Z.-S. Wang,* TiO2 Nanorod Arrays Grown from a Mixed Acid Medium for Efficient Dye-Sensitized Solar Cells, Energy Environ. Sci.20114, 2145–2151.

  68. H. Kim, N. Schulte, G. Zhou, K. Müllen, F. Laquai,* A High Gain and High Charge Carrier Mobility Indenofluorene-Phenanthrene Copolymer for Light Amplification and Organic Lasing, Adv. Mater.201123, 894–897.

  69. T. Hines, I. Diez-Perez, J. Hihath, H. Liu, Z.-S. Wang, J. Zhao,* G. Zhou,* K. Müllen,* N. Tao,* Transition from Tunneling to Hopping in Single Molecular Junctions by Measuring Length and Temperature Dependence, J. Am. Chem. Soc.2010132, 11658–11664.

  70. X. Ren, Q. Feng, G. Zhou,* C.-H. Huang, Z.-S. Wang,*  Effect of Cations in Coadsorbate on Charge Recombination and Conduction Band Edge Movement in Dye-Sensitized Solar Cells, J. Phys. Chem. C2010114, 7190–7195.

  71. E. Fron, A. Deres, S. Rocha, G. Zhou, K. Müllen, F. C. de Schryver, M. Sliwa, H. Uji-i, J. Hofkens, T. Vosch,* Unraveling Excited-State Dynamics in A Polyfluorene-Perylenediimide Copolymer, J. Phys. Chem. B2010114, 1277–1286.

  72. K. Zhao, G. Zhou, Q. Wang, Y. Han,* L. Wang, D. Ma, Phase Separation in Poly(9,9-dioctylfluoxene)/Poly(methyl methacrylate) Blends, Macromol. Chem. Phys.2010211, 313–320.

  73. T. Qin, J. Ding, L. Wang, M. Baumgarten, G. Zhou,* K. Müllen,* A Divergent Synthesis of Very Large Polyphenylene Dendrimers with Iridium(III) Cores: Molecular Size Effect on the Performance of Phosphorescent Organic Light-Emitting Diodes J. Am. Chem. Soc.2009131, 14329–14336.

  74. Z.-S. Wang,* G. Zhou, Effect of Surface Protonation of TiO2 on Charge Recombination and Conduction Band Edge Movement in Dye-Sensitized Solar Cells, J. Phys. Chem. C2009113, 15417–15421.

  75. A. Pron, G. Zhou, H. N.-A., M. Baumgarten, K. Müllen,* Controlling the Charge Transfer in Phenylene-Bridged Borylene-Amine π-Conjugated Systems, Org. Lett.200911, 3550–3553.

  76. G. Zhou, M. Baumgarten, K. Müllen,* Mesitylboron-Substituted Ladder-type Pentaphenylenes: Charge Transfer, Electronic Communication and Sensing Properties, J. Am. Chem. Soc.2008130, 12477–12484.

  77. G. Zhou, N. Pschirer, J. Schöneboom, F. Eickemeyer, M. Baumgarten, K. Müllen,* Ladder-type Pentaphenylene Dyes for Dye-Sensitized Solar Cells, Chem. Mater.200820, 1808–1815.

  78. T. Qin, G. Zhou, H. Scheiber, R. E. Bauer, M. Baumgarten, C. E. Anson, E. J. W. List, K. Müllen,* Polytriphenylene Dendrimers: A Unique Design for Blue-Light-Emitting Materials, Angew. Chem. Int. Ed.200847, 8292–8296.

  79. G. Zhou, M. Baumgarten, K. Müllen,* Arylamine-Substituted Oligo(ladder-type pentaphenylene)s: Electronic Communication between Bridged Redox Centers, J. Am. Chem. Soc.2007129, 12211–12221.

  80. M. Zhang, C. Yang, A. K. Mishra, W. Pisula, G. Zhou, B. Schmaltz, M. Baumgarten, K. Müllen,* Conjugated Alternating Copolymers Containing Both Donor and Acceptor Moieties in the Main Chain, Chem. Commun.200717, 1704–1706.

  81. G. Zhou, Y. Geng, Y. Cheng, Z. Xie, L. Wang,* X. Jing, F. Wang, Efficient Blue Electroluminescence from Neutral Alcohol-Soluble Polyfluorenes with Aluminum cathode, Appl. Phys. Lett.200689, 233501/1–233501/3.

  82. G. Zhou, Y. Cheng, L. Wang,* X. Jing, F. Wang, Novel Polyphenylenes Containing Phenol Substituted Oxadiazole Moieties as Fluorescent Chemosensors for Fluoride Ion, Macromolecules200538, 2148–2153.

  83. G. Zhou, G. Qian, L. Ma, Y. Cheng, Z. Xie, L. Wang,* X. Jing, F. Wang, Polyfluorenes with Phosphonate Groups in the Side Chains as Chemosensors and Electroluminescent Materials, Macromolecules200538, 5416–5424.

  84. 徐礼玲, 赵立群, 张锡琴, 周刚, 陈江山, 程延祥, 耿延候, 马东阁, 王利祥,* 新型蒽衍生物蓝光材料的合成及其光电性能, 应用化学, 200522, 114–116.

  85. H. Tong, G. Zhou, L. Wang,* X. Jing, F. Wang, J. Zhang, Novel Highly Selective Anion Chemosensors Based on 2,5-Bis(2-hydroxyphenyl)-1,3,4-oxadiazole, Tetrahedron Lett.200344, 131–134.