Ding, Li; Wang, Zi-Yuan; Yao, Ze-Fan; Liu, Nai-Fu; Wang, Xin-Yi; Zhou, Yang-Yang; Luo, Longfei; Shen, Zhihao; Wang, Jie-Yu; Pei, Jian published their research in Macromolecules (Washington, DC, United States) in 2021. The article was titled 《Controllable Transformation between the Kinetically and Thermodynamically Stable Aggregates in a Solution of Conjugated Polymers》.Formula: C4H2Br2S The article contains the following contents:
The aggregation behaviors of conjugated polymers significantly influence their performance in solution-processed optoelec. devices. Traditionally, the formation of aggregates from the self-assembly of conjugated polymers is considered as a thermodn. equilibrium process. The abundant degree of conformation freedom of conjugated polymers might lead to complex aggregation behaviors in solution However, the energy landscape of conjugated polymers during aggregation has rarely been studied before, which would provide the energetic and structural information about different aggregates. Our work tried to unravel the energy landscape of conjugated polymers during aggregation and investigate the energetic and structural information of the thermodynamically and kinetically stable aggregates in solution Herein, kinetically and thermodynamically stable aggregates of naphthalene diimide (NDI)-based polymers are obtained through rational mol. design and thermodn. control. Investigation of the theor. calculation, photophys. properties, and morphologies of the conjugated polymers demonstrates the formation of and differences between kinetically and thermodynamically stable aggregates. The energetic and structural anal. of kinetically and thermodynamically stable aggregates here provide insight into the relations among the structure, morphol., and properties of conjugated polymers at the mol. level. This work demonstrates the energy landscape of conjugated polymers during aggregation and further extends our understanding of the aggregation mechanisms. The results came from multiple reactions, including the reaction of 2,5-Dibromothiophene(cas: 3141-27-3Formula: C4H2Br2S)
2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Formula: C4H2Br2S
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary