摘要
Thin solid films of organic conjugated mole-cules are at the center of organic electronics. Low solubility and high sublimation temperature of porphyrin-perylene arrays make it impossible to fabricate uniform solid films with spin-coating and vacuum deposition methodology, though these arrays have important applications in the area of opto-electronics. Here we show that high quality thin films of a porphyrin-perylene array can be prepared by electro-chemical deposition, a facile and widely used film-forming technique. The electrophoretic species are protonated por-phyrin-perylene molecules, which allow us to grow molecular array films on electrodes. By annealing in ammonia atmos-phere or in vacuum at elevated temperature, the protons coordinated with molecular arrays on the deposited films can be eliminated and the porphyrin-perylene arrays recovered to their pristine state.
Thin solid films of organic conjugated molecules are at the center of organic electronics. Low solubility and high sublimation temperature of porphyrin-perylene arrays make it impossible to fabricate uniform solid films with spin-coating and vacuum deposition methodology, though these arrays have important applications in the area of opto-electronics. Here we show that high quality thin films of a porphyrin-perylene array can be prepared by electrochemical deposition, a facile and widely used film-forming technique. The electrophoretic species are protonated porphyrin-perylene molecules, which allow us to grow molecular array films on electrodes. By annealing in ammonia atmosphere or in vacuum at elevated temperature, the protons coordinated with molecular arrays on the deposited films can be eliminated and the porphyrin-perylene arrays recovered to their pristine state.
基金
This work was supported by the National Natural Science Foundation of China(Grant No. 90101008)
the“973”Pro-gram of the Ministry of Science and Technology (Grant No.2002CB6 13401).
