Crystal Structure and Crystalline State Multiphotochromism Properties of a Fused Diarylethene Dimer
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  • 英文篇名:Crystal Structure and Crystalline State Multiphotochromism Properties of a Fused Diarylethene Dimer
  • 作者:范丛斌 ; 刘洋 ; 张道彬 ; 蒲守智
  • 英文作者:FAN Cong-Bin;LIU Yang;ZHANG Dao-Bin;PU Shou-Zhi;Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science &Technology Normal University;
  • 英文关键词:single crystal;;X-ray;;diarylethene;;photochromism;;dimer
  • 中文刊名:JGHX
  • 英文刊名:结构化学(英文版)
  • 机构:Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science &Technology Normal University;
  • 出版日期:2019-02-15
  • 出版单位:Chinese Journal of Structural Chemistry
  • 年:2019
  • 期:v.38;No.292
  • 基金:Supported by the National Natural Science Foundation of China(21701065);; "5511" Science and Technology Innovation Talent Project of Jiangxi Province(20165BCB18015);; the Project of Natural Science Foundation of Jiangxi Province(20171ACB20025,20171BAB203011);; the Project of the Science Funds of Jiangxi Education Office(GJJ170659);; the Project of Jiangxi Advantage Sci-Tech Innovative Team(20142BCB24012)
  • 语种:英文;
  • 页:JGHX201902010
  • 页数:6
  • CN:02
  • ISSN:35-1112/TQ
  • 分类号:92-97
摘要
The crystal structure of fused photochromic diarylethene dimer, 1,4-bis-[4-(4-{2-(5-phenyl)-2-methyl-thiophen-3-yl]-3,3,4,4,5,5-hexafluoro-cyclopent-1-enyl}-5-methyl-thiophen-2-yl) buta-1,3-diyne(1 oo, C46 H23 F12 S4) was determined by single-crystal X-ray diffraction analysis. This crystal belongs to the triclinic system, space group P1 with a = 7.546(3), b = 8.869(3), c = 16.196(5), α = 98.000(4)°, β = 100.803(4)°, γ = 98.449(4)°, Z = 2, V = 1037.6(6) ?~3, Dc = 1.496 mg/m~3, μ = 0.317, F(000) = 474, the final R = 0.0428 and wR = 0.1199 for 4115 observed reflections(I > 2σ(I)). Further study demonstrated this compound underwent reversible photochromism with color-switching between colorlessness and green in crystalline state. Upon 365 nm irradiation, the diarylethene shows one step photochromism to form isomer 1 oc. When irradiated with 312 nm, the stepwise photocyclization reactions occurred in diarylethene dimer through the line of 1 oo to 1 oc to 1 cc.
        The crystal structure of fused photochromic diarylethene dimer, 1,4-bis-[4-(4-{2-(5-phenyl)-2-methyl-thiophen-3-yl]-3,3,4,4,5,5-hexafluoro-cyclopent-1-enyl}-5-methyl-thiophen-2-yl) buta-1,3-diyne(1 oo, C46 H23 F12 S4) was determined by single-crystal X-ray diffraction analysis. This crystal belongs to the triclinic system, space group P1 with a = 7.546(3), b = 8.869(3), c = 16.196(5), α = 98.000(4)°, β = 100.803(4)°, γ = 98.449(4)°, Z = 2, V = 1037.6(6) ?~3, Dc = 1.496 mg/m~3, μ = 0.317, F(000) = 474, the final R = 0.0428 and wR = 0.1199 for 4115 observed reflections(I > 2σ(I)). Further study demonstrated this compound underwent reversible photochromism with color-switching between colorlessness and green in crystalline state. Upon 365 nm irradiation, the diarylethene shows one step photochromism to form isomer 1 oc. When irradiated with 312 nm, the stepwise photocyclization reactions occurred in diarylethene dimer through the line of 1 oo to 1 oc to 1 cc.
引文
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