Air-stable photoconductive films formed from perylene bisimide gelators
Air-stable photoconductive films formed from perylene bisimide gelators
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DOI：
10.1039/c4tc00744a
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发表时间：
2014-01-01
影响因子：
6.4
通讯作者：
Adams, Dave J.
中科院分区：
文献类型：
--
作者：
Draper, Emily R.;Walsh, James J.;Adams, Dave J.
我们发现，氨基酸-PBIs可以在高pH值下形成一维结构，然后在低pH值下形成凝胶。干溶液和干凝胶都是光导的。有趣的是，这些材料的光电导性要求入射光的波长短于400 nm，这与PBIs的吸收最大值形成鲜明对比。光电导性与二萘嵌苯自由基阴离子的形成相关，二萘嵌苯自由基阴离子在空气中异常高度稳定许多小时。
We show that amino acid-PBIs can form one-dimensional structures at high pH and then gels at low pH. Both the dried solutions and dried gels are photoconductive. Interestingly, photoconductivity of these materials requires that the incident light has a wavelength shorter than 400 nm, in stark contrast with the absorption maxima of the PBIs. The photoconductivity correlates with the formation of the perylene radical anion, which is unusually highly stable in air for many hours.