| 1043497-59-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• CAS: 1043497-59-1
• 化学式: C₃₄H₄₀N₂O₄
• 分子量: 540.703
• InChiKey: FWWSBMDIKZLVQY-JFQKCFOJSA-N

反应信息

• 作为产物：
  描述：

  以 水 为溶剂， 生成
  参考文献：
  名称：

  [2+2] Photocycloaddition of Styryl Dyes in the Cucurbit[8]uril Cavity and Its Ultrafast Dynamics

  摘要：

  [2+2] Photocycloaddition of a series of styryl dyes (a, b, and c, see text) in the cavity of cucurbit[8]uril (CB8) in aqueous solutions has been studied by optical spectroscopy. The complex formation constants were calculated for the 1 : 1 and 2 : 1 complexes of the styryl dyes with CB8. The optimal CB8 to dye molar ratios that correspond to the highest concentrations of the 2 : 1 complexes in the solution have been determined as 0.5, 0.3, and 1 for dyes a, b, and c, respectively. The quantum yields of photocycloaddition have been calculated from the results of dye photolysis in the presence of CB8: 0.06, 0.02, and 0.04 for a, b, and c, respectively. The fluorescence decay kinetics has been studied on the picosecond timescale. The lifetimes found are 1-2 ps, which correspond to the characteristic time of the solvation shell effect on the redistribution of the dye charge in the excited state. The long component of the fluorescence decay on the order of tens of picosecond is also observed. This component decreases in the presence of CB8, indicating the formation of dimeric state.

  DOI：

  10.1134/s0018143919030147