bis[4-ethynylphenyl]dihexylsilane | 686326-07-8

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: bis[4-ethynylphenyl]dihexylsilane
• 英文别名: Bis(4-ethynylphenyl)-dihexylsilane
• CAS: 686326-07-8
• 化学式: C₂₈H₃₆Si
• 分子量: 400.679
• InChiKey: MSPAOVIUWZYDOL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.37
• 重原子数：
  29
• 可旋转键数：
  14
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  在 sodium hydroxide 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 1.0h， 以0.6 g的产率得到bis[4-ethynylphenyl]dihexylsilane
  参考文献：
  名称：

  Dynamic Fluoride Anion Coordinating Si-Containing π-Conjugating Polymers

  摘要：

  Three types of poly [dialkylsilylenephenyleneethynylenepbenylene]s (dialkyl: 2 for n-do-decylmethyl; 5a for di-n-hexyl; 5b for di-n-hexyl-co-dimethyl) were newly prepared by the AB- and AA-BB-type coupling reactions. These polymers afforded moderate molecular weights (M-w) in the range 7.6 x 10(3)-27 x 10(3). As the amount of tetra-n-butylammonium fluoride (TBAF) increases in a THF solution of 2, two pi-pi* absorption bands at 298 and 317 nm due to the phenyleneethynylenephenylene moiety significantly decreased. Simultaneously, a new intense absorption band at 390 nm characteristic of intramolecular charge transfer (ICT) appeared in place of the original ICT absorption band at 342 nm. Also, the intensity of fluorescence band around 393 nm (excited at 342 nm) significantly decreased upon the addition of TBAR The changes in UV-vis absorption and fluorescence spectra of the polymers were readily seen by naked eye. As for 2, a novel three-step titration curve of UV absorbance (or apparent GPC retention time) as a function of fluoride concentration was found. It was thus assumed that 2 underwent anion charge-driven coil-to-globule conformational transitions in the presence of TBAF. In addition, the complex forming abilities of the polymers with fluoride ion were greatly dependent on the nature of alkyl groups attached to the silicon atom of the polymers.

  DOI：

  10.1021/ma035327+