二元溶剂体系对含仲胺基团苝酰亚胺衍生物自组装与光电性能的影响

doi:10.11896/cldb.20030075

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Abstract Aperylene imide derivative N,N- 2(2-ethylethylenediamine)-1,6,7,12-4(4-tert-butyl phenylexy)-3,4,9,10-perylene imide (B-PDI-1) containing secondary amine group prepared. The photophysical properties of B-PDI-1 in THF/H₂O self-assembly systems with different THF fractions were investigated by UV-vis and fluorescence spectrum.The morphologies and structures of B-PDI-1 in THF/H₂O was characterized by SEM and XRD. Cyclic voltammetry (CV) was used to study the influence of binary solvent environment on the electronic structure of aggregates. The electrochemical workstation was used to measure the J-V curve and transient light response of the aggregate, and the photovoltaic perfor-mance was evaluated. The results showed that the absorption of B-PDI-1 in THF/H₂O in the UV-vis spectrum showed red-shift phenomenon, and the maximum value reached 35.4 nm when f_THF=10%. With the decrease of f_THF in the THF/H₂O binary solvent system, the fluorescence gra-dually decreased, but there was always a trace fluorescence. B-PDI-1 adopted J-type aggregation in THF/H₂O.B-PDI-1 form aggregates with distinct morphologies in mixed solutions with different THF/H₂O ratios. In solutions with different f_THF, the nanostructures of spiral strip, long oblique quadrilateral, rod shape, spherical shape and long straight nanoribbon are obtained respectively.With the change of f_THF, the mole-cular packing mode is changed, and the perturbation between molecules is mainly manifested in the improvement of HOMO energy level. The difference of energy band of different aggregates causes the color change, and the maximum light wave conversion efficiency is 0.43% at f_THF=10%.

Key words： perylene imide self-assembly secondary amine groups electron structure photovoltaic performance binary solvent system

Published: 04 June 2021

CLC number:

O641.3

Fund:National Natural Science Foundation of China (50573019,51273061), the Natural Science Foundation of Hunan Province(2016JJ2027).

About author:: Tao Long received his master's degree in engineering from Hunan University in July 2020. From September 2017 to July 2020, he studied in the School of Materials Science and Engineering, Hunan University, focusing on the supramolecular material self-assembly and polymer material modification.
Xinguo Yang, associate professor. From July 2003 to now, he has been teaching at College of Materials Science and Engineering, Hunan University, mainly engaged in the synthesis and assembly of novel organic polymer functional materials. He has presided over and participated in several projects of National Natural Science Foundation of China and Provincial Natural Science Foundation of China, and published more than 40 papers.

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	LONG Tao
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	WANG Ying
	MAO Fengyu

Cite this article:

LONG Tao,YANG Xinguo,LI Siyu, et al. Effects of Binary Solvent System on Aggregation Behaviors and Photoelectric Properties of Perylene Imide Derivative with Secondary Amine Groups[J]. Materials Reports, 2021, 35(10): 10176-10183.

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http://www.mater-rep.com/EN/10.11896/cldb.20030075 OR http://www.mater-rep.com/EN/Y2021/V35/I10/10176

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