| 초록 |
The design and synthesis of photoactive polymeric systems are important in regard to solar energy harvesting and utilization. Here, we synthesized photoactive polymeric thin films via iterative self-assembly using reversible metal-terpyridine (M-tpy) interactions. The growth rate of thin film deposition depends on the metal ion of choice. UV–vis spectroscopy and surface profilometer investigations show that the polymeric thin films with Cu(II) grew two times faster than those with Zn(II), attributed to the strong M-tpy interaction. Interestingly, photocurrent generated in the polymeric thin films with Zn(II) was much higher than those of other films. In addition, we found that the anodic photocurrents increased with the inclusion of the multi-walled carbon nanotube (MWNT) layer; the polymer-MWNT hybrid films fabricated by Cu(II) and Zn(II) show 2.2- and 1.4 folds enhancements. The choice of metal ions appears crucial in the mixed metal-tpy complex systems not only for the film growth, but also for the efficient photoinduced electron transfer. |
