Highly Luminescent Encapsulated Narrow Bandgap Polymers Based on Diketopyrrolopyrrole
Highly Luminescent Encapsulated Narrow Bandgap Polymers Based on Diketopyrrolopyrrole
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DOI：
10.1021/jacs.7b13447
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发表时间：
2018-02-07
影响因子：
15
通讯作者：
Bronstein, Hugo
中科院分区：
文献类型：
--
作者：
Leventis, Anastasia;Royakkers, Jeroen;Bronstein, Hugo
本文合成了一系列具有包封结构的二酮基吡咯并吡咯红色发光共轭聚合物。该新材料在溶液（>70%）和薄膜（>20%）中都显示出极高的荧光量子产率。吸收和发射光谱显示更清晰，更明确的功能相比，其裸露的同行证明抑制分子间和分子内聚集。我们发现，封装的结果在减少充满活力的障碍和显着增加的骨干共线性证明了扫描隧道显微镜。本研究为二酮基吡咯并吡咯在固态发射应用中的应用铺平了道路，并展示了一种新的方法来减少共轭聚合物中的结构无序。
We present the synthesis and characterization of a series of encapsulated diketopyrrolopyrrole red-emitting conjugated polymers. The novel materials display extremely high fluorescence quantum yields in both solution (>70%) and thin film (>20%). Both the absorption and emission spectra show clearer, more defined features compared to their naked counterparts demonstrating the suppression of inter and intramolecular aggregation. We find that the encapsulation results in decreased energetic disorder and a dramatic increase in backbone colinearity as evidenced by scanning tunnelling microscopy. This study paves the way for diketopyrrolopyrrole to be used in emissive solid state applications and demonstrates a novel method to reduce structural disorder in conjugated polymers.