Soft chromophore featured liquid porphyrins and their utilization toward liquid electret applications
Soft chromophore featured liquid porphyrins and their utilization toward liquid electret applications
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DOI：
10.1038/s41467-019-12249-8
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发表时间：
2019-09-30
影响因子：
16.6
通讯作者：
Nakanishi, Takashi
中科院分区：
文献类型：
--
作者：
Ghosh, Avijit;Yoshida, Manabu;Nakanishi, Takashi
光电活性粘性液体由于其优异的变形性和基于π单元的可预测光电功能而成为制造可折叠/可拉伸电子产品的理想选择，这些功能与器件形状和几何形状无关。在这里，我们展示了使用无溶剂液体卟啉制备了前所未有的“液体驻极体”器件，该器件具有机电和电声功能以及可拉伸性。游离碱烷基化四苯基卟啉的流体性质是通过在不同位置连接柔性且庞大的支化烷基链来控制的。此外，还观察到由于烷基链的庞大而引起的微妙的卟啉环扭曲。通过光谱技术和理论模型精确地阐明了它对卟啉单元电子扰动的影响。这种分子设计允许通过绝缘烷基链来屏蔽卟啉单元，这有利于其在环境条件下长期保持电晕带电状态。
Optoelectronically active viscous liquids are ideal for fabricating foldable/stretchable electronics owing to their excellent deformability and predictable pi-unit-based optoelectronic functions, which are independent of the device shape and geometry. Here we show, unprecedented 'liquid electret' devices that exhibit mechanoelectrical and electroacoustic functions, as well as stretchability, have been prepared using solvent-free liquid porphyrins. The fluidic nature of the free-base alkylated-tetraphenylporphyrins was controlled by attaching flexible and bulky branched alkyl chains at different positions. Furthermore, a subtle porphyrin ring distortion that originated from the bulkiness of alkyl chains was observed. Its consequences on the electronic perturbation of the porphyrin-unit were precisely elucidated by spectroscopic techniques and theoretical modelling. This molecular design allows shielding of the porphyrin unit by insulating alkyl chains, which facilitates its corona-charged state for a long period under ambient conditions.