Tang Shumei, Xu Yu, Su Gehong, Bao Jianjun, Zhang Aimin
State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University Chengdu 610065 China
RSC Adv. 2018 Oct 16;8(62):35429-35436. doi: 10.1039/c8ra07003b. eCollection 2018 Oct 15.
Stretchable and flexible photoelectric materials are highly desirable for the development of artificial intelligence products. However, it remains a challenge to fabricate a stable, processable, and cost-efficient material with both high photoelectric sensitivity and remarkable deformability. Herein, a new kind of photoelectric sensitive, highly stretchable and environmentally adaptive materials was developed through synthesis and π-π conjugation design. Specifically, a photoelectric elastomer zinc porphyrin SEBS(Zn-PorSEBS) was synthesized by introducing porphyrin to SEBS chain a one-pot method. Then, graphene/zinc porphyrin SEBS (G/Zn-PorSEBS) composites were obtained by combing the elastomer with graphene sheets through solution blending. Notably, the resultant flexible composites were capable of capturing light changes with illumination on or off, and the maximum photocurrent density reached 0.13 μA cm. Moreover, the photoelectric composites exhibited a dramatic elongation (more than 1000%) and an excellent tensile strength about 20 MPa. This proposed strategy represents a general approach to manufacture photoelectric and flexible materials.
可拉伸且灵活的光电材料对于人工智能产品的发展极为重要。然而，制造一种兼具高光电灵敏度和出色可变形性的稳定、可加工且经济高效的材料仍然是一项挑战。在此，通过合成和π-π共轭设计开发了一种新型的光电敏感、高可拉伸且环境适应性强的材料。具体而言，通过一锅法将卟啉引入SEBS链中合成了一种光电弹性体锌卟啉SEBS（Zn-PorSEBS）。然后，通过溶液共混将该弹性体与石墨烯片相结合，得到了石墨烯/锌卟啉SEBS（G/Zn-PorSEBS）复合材料。值得注意的是，所得的柔性复合材料能够在光照开启或关闭时捕获光变化，最大光电流密度达到0.13 μA/cm²。此外，该光电复合材料表现出显著的伸长率（超过1000%）和优异的拉伸强度，约为20 MPa。所提出的策略代表了一种制造光电和柔性材料的通用方法。
