Wang Ying, Yang Xinguo, Li Siyu, Long Tao, Li Wei
College of Materials Science and Engineering, Hunan University, Changsha 410082, China.
Materials (Basel). 2020 Apr 3;13(7):1656. doi: 10.3390/ma13071656.
In this work, perylene bisimide derivatives (PBI-1 and PBI-2) with tertiary amine groups were designed and synthesized. To control the final morphologies and properties of their aggregates, seven kinds of organic acids were used to alter the self-assembly environment. The influence of organic acids on the morphology of the aggregates was investigated. Photophysical properties of the aggregates were markedly affected by the kind and concentration of the organic acid. The thermal and gas sensitivities of the PBI-1 aggregates were studied with the use of UV-visible spectroscopy and digital imaging. The shift of the UV-visible spectra varied with time, temperature, acid type and acid concentration. Furthermore, PBI-1 aggregates showed a red-to-blue color change after addition of seven organic acids, whereas the color of the PBI-2 aggregates remained red. These changes of morphologies, photophysical properties and their thermal and gas sensitivities make these aggregates potentially useful in the fields of optoelectronics or sensors.
在本工作中，设计并合成了带有叔胺基团的苝二酰亚胺衍生物（PBI-1和PBI-2）。为了控制其聚集体的最终形态和性质，使用了七种有机酸来改变自组装环境。研究了有机酸对聚集体形态的影响。聚集体的光物理性质受到有机酸种类和浓度的显著影响。利用紫外可见光谱和数字成像研究了PBI-1聚集体的热稳定性和气体敏感性。紫外可见光谱的位移随时间、温度、酸的类型和酸浓度而变化。此外，加入七种有机酸后，PBI-1聚集体呈现从红色到蓝色的颜色变化，而PBI-2聚集体的颜色保持红色。这些形态、光物理性质及其热稳定性和气体敏感性的变化使得这些聚集体在光电子学或传感器领域具有潜在的应用价值。
