4-bromo-5-n-hexyl-2-(1,3-dioxolane)thiophene | 944243-53-2

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: 4-bromo-5-n-hexyl-2-(1,3-dioxolane)thiophene
• CAS: 944243-53-2
• 化学式: C₁₃H₁₉BrO₂S
• 分子量: 319.263
• InChiKey: TXBNUCWUGVJCFA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.68
• 重原子数：
  17.0
• 可旋转键数：
  6.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.69
• 拓扑面积：
  18.46
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  4-bromo-5-n-hexyl-2-(1,3-dioxolane)thiophene 在 吡啶 、 正丁基锂 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 正己烷 、 水 、 丙酮 为溶剂， 生成 1,2-bis(2-n-hexyl-5-formyl-3-thienyl)perfluorocyclopentene
  参考文献：
  名称：

  Synthesis and the effect of alkyl chain length on optoelectronic properties of diarylethene derivatives

  摘要：

  Photochromic symmetrical diarylethene derivatives 1a-6a bearing different long alkyl chains at 2-position of thiophene rings have been synthesized and their structures have been determined by single-crystal X-ray diffraction analysis. The effect of alkyl chain length on their optoelectronic properties, such as photochromism in solution as well as in the crystalline phase and electrochemical performance was investigated in detail. These diarylethenes have showed good photochromic behavior both in solution and in the single crystalline phase. Introduction of the long alkyl chains at 2-position of bis(5-formyl-3-thienyl) perfluorocyclopentene increased the absorption coefficients of both open- and closed-ring isomers and induced bathochromic shifts of the maximal wavelength absorption of the closed-ring isomers. The long alkyl chains can also decrease the cyclization/cycloreversion quantum yields and the oxidation potentials. The cyclic voltammetry indicated that the band gap of these diarylethene derivatives was significantly affected by the alkyl chain length. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2007.04.049
• 作为产物：
  描述：

  2-正己基噻吩 在 溴 、 对甲苯磺酸 、 溶剂黄146 、 三氯氧磷 作用下， 以 苯 为溶剂， 生成 4-bromo-5-n-hexyl-2-(1,3-dioxolane)thiophene
  参考文献：
  名称：

  Synthesis and the effect of alkyl chain length on optoelectronic properties of diarylethene derivatives

  摘要：

  Photochromic symmetrical diarylethene derivatives 1a-6a bearing different long alkyl chains at 2-position of thiophene rings have been synthesized and their structures have been determined by single-crystal X-ray diffraction analysis. The effect of alkyl chain length on their optoelectronic properties, such as photochromism in solution as well as in the crystalline phase and electrochemical performance was investigated in detail. These diarylethenes have showed good photochromic behavior both in solution and in the single crystalline phase. Introduction of the long alkyl chains at 2-position of bis(5-formyl-3-thienyl) perfluorocyclopentene increased the absorption coefficients of both open- and closed-ring isomers and induced bathochromic shifts of the maximal wavelength absorption of the closed-ring isomers. The long alkyl chains can also decrease the cyclization/cycloreversion quantum yields and the oxidation potentials. The cyclic voltammetry indicated that the band gap of these diarylethene derivatives was significantly affected by the alkyl chain length. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2007.04.049

文献信息

• Synthesis and the optoelectronic properties of diarylethene derivatives having benzothiophene and n-alkyl thiophene units
  作者：Shouzhi Pu、Min Li、Congbin Fan、Gang Liu、Liang Shen

  DOI：10.1016/j.molstruc.2008.08.023

  日期：2009.2

  Abstract Six new unsymmetrical diarylethenes having both benzothiophene and n -alkylthiophene units have been synthesized. The structures of diarylethenes 2a – 6a were determined by single-crystal X-ray diffraction analysis. The results showed that the alkyl chain length had a significant effect on the optoelectronic properties of these diarylethenes, including photochromism, fatigue resistance, fluorescence

  摘要 合成了六种新的同时具有苯并噻吩和正烷基噻吩单元的不对称二芳基乙烯。二芳基乙烯2a-6a的结构由单晶X射线衍射分析确定。结果表明，烷基链长对这些二芳基乙烯的光电性能有显着影响，包括光致变色、抗疲劳、荧光和电化学性能。长烷基链可以增加环化/环回复量子产率，但会降低二芳基乙烯 1 – 6 的吸收最大值。长烷基链还可以导致闭环异构体 1b-6b 在溶液和 PMMA 膜中的吸收最大值发生显着的红移。所有这些二芳基乙烯衍生物在己烷中都显示出良好的荧光转换（猝灭至约 10%）。随着烷基链长度变长，二芳基乙烯1-6的发射强度和荧光量子产率逐渐降低。此外，循环伏安测试表明，烷基链长对这些二芳基乙烯的电化学行为有显着影响。