TTF*CBPQT(4+) | 159265-86-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: TTF*CBPQT(4+)
• CAS: 159265-86-8
• 化学式: C₆H₄S₄*C₃₆H₃₂N₄
• 分子量: 725.039
• InChiKey: SBKXTQMFRSNFDZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.69
• 重原子数：
  50.0
• 可旋转键数：
  0.0
• 环数：
  24.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  15.52
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  四硫富瓦烯 、 cyclobis(paraquat-p-phenylene) 以 乙腈 为溶剂， 生成 TTF*CBPQT(4+)
  参考文献：
  名称：

  Turning on Resonant SERRS Using the Chromophore−Plasmon Coupling Created by Host−Guest Complexation at a Plasmonic Nanoarray

  摘要：

  An active molecular plasmonics system is demonstrated where a supramolecular chromophore generated in a host guest binding event couples with the localized surface plasmon resonance (LSPR) arising from gold nanodisc gratings. This coupling was achieved by wavelength-matching the chromophore and the LSPR with the laser excitation, thus giving rise to surface-enhanced resonance Raman scattering (SERRS). The chromophore is a broad charge-transfer (CT) band centered at 865 nm (epsilon = 3500 M-1 cm(-1)) generated by the complexation of cyclobis(paraquat-p-phenylene) (CBPQT(4+)) and the guest molecule tetrathiafulvalene (TTF). The substrates consist of sub-1-mu m gold nanodisc arrays which display dimension-tunable plasmon wavelengths (600-1000 nm). The vibrational spectra of the complex arising from SERRS (lambda(exc) = 785 nm) were generated by irradiating an array (lambda(LSPR) = 765 nm) through the solution to give a chromophore-specific signature with the intensities surface enhanced by similar to 10(5). Surface adsorption of the empty and complexed CBPQT(4+) is also implicated in bringing the chromophore into the electric field arising from the surface-localized plasmon. In a titration experiment, the SERRS effect was then used to verify the role of resonance in turning on the spectrum and to accurately quantify the binding between surface-adsorbed CBPQT(4+) and TTF. The use of a nonpatterned gold substrate as well as a color mismatched complex did not show the enhancement, thus validating that spectral overlap between the chromophore and plasmon resonance is key for resonance surface enhancement. Simulations of the electric fields of the arrays are consistent with interdisc plasmon coupling and the observed enhancement factors. The creation of a responsive plasmonic device upon the addition of the guest molecule and the subsequent coupling of the CT chromophore to the plasmon presents favorable opportunities for applications in molecular sensing and active molecular plasmonics.

  DOI：

  10.1021/ja910155b