5,10,15,20-tetrakis(2,4,6-trimethylphenyl)-6'-carboxylquinoxalino[2,3-b]quinoxalino[12,13-b']porphyrinato zinc(II) | 1314587-52-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 英文名称: 5,10,15,20-tetrakis(2,4,6-trimethylphenyl)-6'-carboxylquinoxalino[2,3-b]quinoxalino[12,13-b']porphyrinato zinc(II)
• CAS: 1314587-52-4
• 化学式: C₆₉H₅₆N₈O₂Zn
• 分子量: 1094.65
• InChiKey: ARADBVCPHICCFY-JAWUGNMGSA-M

反应信息

• 作为产物：
  描述：

  5,10,15,20-tetrakis(2,4,6-trimethylphenyl)-6'-methoxycarboxylquinoxalino[2,3-b]quinoxalino[12,13-b']porphyrin 在 zinc(II) acetate dihydrate 、 sodium hydroxide 、 盐酸 作用下， 以 四氯化碳 、 正丁醇 、 四氢呋喃 、 水 为溶剂， 反应 64.0h， 以84%的产率得到5,10,15,20-tetrakis(2,4,6-trimethylphenyl)-6'-carboxylquinoxalino[2,3-b]quinoxalino[12,13-b']porphyrinato zinc(II)
  参考文献：
  名称：

  Bisquinoxaline-Fused Porphyrins for Dye-Sensitized Solar Cells

  摘要：

  Abstract5,10,15,20‐Tetrakis(2,4,6‐trimethylphenyl)‐6′‐carboxylquinoxalino[2,3‐b]quinoxalino[12,13‐b′]porphyrinatozinc(II) (ZnPBQ) is synthesized to evaluate the effects of π elongation of quinoxaline‐fused porphyrins on the optical, electrochemical, and photovoltaic properties. ZnPBQ showed an intensified Soret band as well as red‐shifted Soret and Q bands relative to 5,10,15,20‐tetrakis(2,4,6‐trimethylphenyl)‐6′‐carboxylquinoxalino[2,3‐b]porphyrinatozinc(II) (ZnPQ), demonstrating the improved light‐harvesting property of ZnPBQ. The optical and electrochemical HOMO–LUMO gaps were consistent with those estimated by DFT calculations. The photovoltaic properties were compared under optimized conditions, in which a sealed device structure with TiCl4‐treated, TiO2 double layers was used. The ZnPBQ cell exhibited a relatively high power conversion efficiency (η) of 4.7 %, which was smaller than that of the ZnPQ cell (η=6.3 %). The weaker electronic coupling between the LUMO of ZnPBQ and conduction band (CB) of TiO2 or more tilted geometry of ZnPBQ on the TiO2 surface may result in the low electron injection/charge collection efficiency as well as the low incident photon‐to‐current efficiency (IPCE) for the ZnPBQ cell (maximum IPCE=56 %) relative to the ZnPQ cell (maximum IPCE=75 %), leading to the lower η value of the ZnPBQ cell than that of the ZnPQ cell. In addition, the open‐circuit potential of the ZnPBQ cell also slightly decreased with the effect of charge recombination from the electrons injected into the CB of TiO2 to I3−.

  DOI：

  10.1002/cssc.201100029