Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA.
ACS Appl Mater Interfaces. 2012 Mar;4(3):1211-8. doi: 10.1021/am201193x. Epub 2012 Mar 2.
A series of poly(p-phenylene vinylene) (PPV) copolymers functionalized with hole-transport and electrochemically active carbazole units as pendant moieties is reported. These polymers exhibit photoluminescence properties by virtue of the PPV analogous backbone. They were also designed as precursor polymer bearing the electroactive carbazole group to form conjugated polymer network (CPN) films by electrodeposition. The electrochemical polymerization of the pendant units eventually lead to a dual property electro-optically active thin film - photoluminescence (PL) behavior that can be attenuated with CPN formation, and a reversible doping and dedoping processes at controlled potentials that lead to an electrochromic behavior. This reveals the ability to incorporate complementary optical and electro-optical properties within the same film using the CPN approach. It should be possible to design and synthesize other PPV π-conjugated polymers with efficient pendant hole-transport groups exhibiting tunable PL and electrochromism with cross-linking.
本文报道了一系列聚对苯乙炔（PPV）共聚物，这些共聚物通过 PPV 类似的主链具有光致发光性能，并且还被设计为带有电化学活性咔唑基团的前体聚合物，通过电沉积形成共轭聚合物网络（CPN）薄膜。侧基单元的电化学聚合最终导致具有光电活性的双层薄膜-光致发光（PL）行为，CPN 的形成可以衰减 PL 行为，而在控制电位下进行可逆掺杂和去掺杂过程则导致电致变色行为。这表明可以使用 CPN 方法在同一薄膜中结合互补的光学和光电光学性质。通过交联，可以设计和合成具有有效侧基空穴传输基团的其他 PPVπ-共轭聚合物，从而具有可调谐的 PL 和电致变色性能。
