Daimon Tatsuya, Nihei Eisuke
Graduate School of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
Materials (Basel). 2013 Apr 29;6(5):1704-1717. doi: 10.3390/ma6051704.
In this study, we report the light-emitting assistance effect of perylene on a polymer electrochemiluminescence (ECL) device using poly(3-octylthiophene-2,5-diyl) (P3OT). An ECL device is a liquid type self-luminous device with a simple structure, and can be fabricated by a relatively easy procedure. Significant improvement in luminescence properties was confirmed when 1.0 wt % perylene was added to the ECL device using 3.0 wt % P3OT. Improvements of about 12 times of the maximum luminescence intensity and about 23 times of the light-emitting time ratio compared with that of a P3OT ECL device were obtained. We conclude that the light-emitting assistance of perylene is achieved by perylene radical ions shuttling electrons to P3OT while they are moving around in the emitting solution. The light-emitting assistance effect of perylene was also confirmed when poly(3-dodecylthiophene-2,5-diyl), which has almost identical electrochemical and photophysical characteristics to those of P3OT, was used instead of P3OT.
在本研究中，我们报道了苝对使用聚（3 - 辛基噻吩 - 2,5 - 二基）（P3OT）的聚合物电化学发光（ECL）器件的发光辅助作用。ECL器件是一种结构简单的液体型自发光器件，可通过相对简单的工艺制造。当向使用3.0 wt% P3OT的ECL器件中添加1.0 wt%苝时，发光性能得到了显著改善。与P3OT ECL器件相比，最大发光强度提高了约12倍，发光时间比提高了约23倍。我们得出结论，苝的发光辅助作用是通过苝自由基离子在发射溶液中移动时将电子穿梭到P3OT上实现的。当使用与P3OT具有几乎相同电化学和光物理特性的聚（3 - 十二烷基噻吩 - 2,5 - 二基）代替P3OT时，苝的发光辅助作用也得到了证实。
