Affiliation:
1. Key Laboratory of Precision and Intelligent Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
Abstract
AbstractControlling the nanoscale orientation of π‐conjugated systems remains challenging due to the complexity of multiple energy landscapes involved in the supramolecular assembly process. In this study, we have developed an effective strategy for programming the pathways of π‐conjugated supramolecular polymers, by incorporating both electron‐rich methoxy‐ or methanthiol‐benzene as donor unit and electron‐poor cyano‐vinylenes as acceptor units on the monomeric structure. It leads to the formation of parallel‐stacked supramolecular polymers as the metastable species through homomeric donor/acceptor packing, which convert to slip‐stacked supramolecular polymers as the thermodynamically stable species facilitated by heteromeric donor‐acceptor packing. By further investigating the external seed‐induced kinetic‐to‐thermodynamic transformation behaviors, our findings suggest that the donor‐acceptor functionality on the seed structure is crucial for accelerating pathway conversion. This is achieved by eliminating the initial lag phase in the supramolecular polymerization process. Overall, this study provides valuable insights into designing molecular structures that control aggregation pathways of π‐conjugated nanostructures.
Funder
National Natural Science Foundation of China
Hefei Science Center, Chinese Academy of Sciences
Fundamental Research Funds for the Central Universities
Subject
General Chemistry,Catalysis
Cited by
9 articles.
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