Sreenivasu Mareedu, Suzuki Akira, Adachi Mitsuhiro, Kumar Challuri Vijay, Srikanth Bingi, Rajendar S, Rambabu Dasa, Kumar Rangaraju Satish, Mallesham P, Rao N Vijaya Bhaskar, Kumar M Suresh, Reddy P Y
Aisin Cosmos R&D Co. Ltd., HUDA Complex, Tarnaka, Hyderabad, 500007 (India).
Chemistry. 2014 Oct 20;20(43):14074-83. doi: 10.1002/chem.201403660. Epub 2014 Sep 10.
New porphyrin sensitizers based on donor-π-acceptor (D-π-A) approach have been designed, synthesized, characterized by various spectroscopic techniques and their photovoltaic properties explored. N,N'-Diphenylamine acts as donor, the porphyrin is the π-spacer, and either carboxylic acid or cyanoacryclic acid acts as acceptor. All compounds were characterized by using (1)H NMR spectroscopy, ESI-MS, UV-visible emission spectroscopies as well as electrochemical methods. The presence of aromatic groups between porphyrin π-plane and acceptor group push the absorption of both Soret and Q-bands of porphyrin towards the red region. The electrochemical properties suggests that LUMO of these sensitizers above the TiO2 conduction band. Finally, the device was fabricated using liquid redox electrolyte (I(-)/I3(-)) and its efficiency was compared with that of a leading sensitizer.
基于给体-π-受体（D-π-A）方法设计、合成了新型卟啉敏化剂，采用各种光谱技术对其进行了表征，并对其光伏性能进行了探索。N，N'-二苯胺作为给体，卟啉作为π间隔基，羧酸或氰基丙烯酸作为受体。所有化合物均通过¹H NMR光谱、电喷雾质谱、紫外-可见发射光谱以及电化学方法进行了表征。卟啉π平面与受体基团之间芳香基团的存在将卟啉的Soret带和Q带吸收都推向了红色区域。电化学性质表明这些敏化剂的最低未占分子轨道高于TiO₂导带。最后，使用液体氧化还原电解质（I⁻/I₃⁻）制备了器件，并将其效率与一种领先的敏化剂进行了比较。
