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Rigid Polymer Network-Based Autonomous Photoswitches Working in the Solid State Encoded by Room-Temperature Phosphorescence
Langmuir ( IF 3.7 ) Pub Date : 2021-12-01 , DOI: 10.1021/acs.langmuir.1c02347 Yifan Gong 1 , Man Zhang 1 , Xiaoyong Jia 2 , Bingbing Yue 1, 3 , Liangliang Zhu 1
Langmuir ( IF 3.7 ) Pub Date : 2021-12-01 , DOI: 10.1021/acs.langmuir.1c02347 Yifan Gong 1 , Man Zhang 1 , Xiaoyong Jia 2 , Bingbing Yue 1, 3 , Liangliang Zhu 1
Affiliation
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Autonomous molecular switches with self-recoverability are of great theoretical and experimental interest since they can avoid additional chemical or energy imposition during the working process. Due to the high energy barrier, however, the solid state is generally unfavorable for materials to exhibit the autonomous switch behavior. To promote the practical usage of the autonomous molecular switch, herein, we propose a prototype of an autonomous photoswitch that can work in the solid state based on a rigid polymer network. A hexacarboxylic sodium-modified hexathiobenzene compound was employed as a photoexcitation-driven unit, which can undergo molecular aggregation upon irradiation because of the distinct conformational difference between the ground state and the photoexcited state. Then, we selected a relatively rigid polymer named poly(dimethyldiallylammonium)chloride (PDDA) to complex with the hexacarboxylic sodium-modified hexathiobenzene through electrostatic coupling. Through optimization, the photoexcitation-controlled molecular aggregation and its self-recovery can work well in the solid matrix of PDDA under rhythmical photoirradiation. This process can be easily encoded by a self-recoverable room-temperature phosphorescence, featuring an excellent performance of the autonomous switch.
中文翻译：
基于刚性聚合物网络的自主光开关在室温磷光编码的固态下工作
具有自恢复能力的自主分子开关具有重要的理论和实验意义，因为它们可以避免在工作过程中施加额外的化学或能量。然而，由于高能垒，固态通常不利于材料表现出自主开关行为。为了促进自主分子开关的实际应用，在此，我们提出了一种基于刚性聚合物网络的可在固态下工作的自主光开关的原型。六羧酸钠修饰的六硫代苯化合物被用作光激发驱动单元，由于基态和光激发态之间存在明显的构象差异，因此在辐照时可以发生分子聚集。然后，我们选择了一种名为聚（二甲基二烯丙基铵）氯化物（PDDA）的相对刚性的聚合物，通过静电偶联与六羧酸钠改性的六硫苯络合。通过优化，光激发控制的分子聚集及其自我恢复可以在有节奏的光照射下在PDDA固体基质中很好地发挥作用。该过程可以通过自恢复的室温磷光轻松编码，具有自主开关的优异性能。
更新日期：2021-12-14
中文翻译：
基于刚性聚合物网络的自主光开关在室温磷光编码的固态下工作
具有自恢复能力的自主分子开关具有重要的理论和实验意义，因为它们可以避免在工作过程中施加额外的化学或能量。然而，由于高能垒，固态通常不利于材料表现出自主开关行为。为了促进自主分子开关的实际应用，在此，我们提出了一种基于刚性聚合物网络的可在固态下工作的自主光开关的原型。六羧酸钠修饰的六硫代苯化合物被用作光激发驱动单元，由于基态和光激发态之间存在明显的构象差异，因此在辐照时可以发生分子聚集。然后，我们选择了一种名为聚（二甲基二烯丙基铵）氯化物（PDDA）的相对刚性的聚合物，通过静电偶联与六羧酸钠改性的六硫苯络合。通过优化，光激发控制的分子聚集及其自我恢复可以在有节奏的光照射下在PDDA固体基质中很好地发挥作用。该过程可以通过自恢复的室温磷光轻松编码，具有自主开关的优异性能。
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