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Three-Component Multiblock 1D Supramolecular Copolymers of Ir(III) Complexes with Controllable Sequences |
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| Authors: | Yan Chen Dr Qingyun Wan Dr Yusheng Shi Prof Bingtao Tang Prof Chi-Ming Che Prof Chun Liu |
| Institution: | 1. State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian, 116024 China
Contribution: Investigation (lead), Methodology (lead), Writing - original draft (lead), Writing - review & editing (lead);2. Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China Contribution: Formal analysis (equal), Validation (equal);3. State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian, 116024 China Contribution: Resources (supporting);4. State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian, 116024 China Contribution: Resources (equal), Writing - review & editing (supporting);5. Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China;6. State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian, 116024 China |
| Abstract: | Multicomponent supramolecular block copolymers (BCPs) have attracted much attention due to their potential functionalities, but examples of three-component supramolecular BCPs are rare. Herein, we report the synthesis of three-component multiblock 1D supramolecular copolymers of Ir(III) complexes 1 – 3 by a sequential seeded supramolecular polymerization approach. Precise control over the kinetically trapped species via the pathway complexity of the monomers is the key to the successful synthesis of BCPs with up to 9 blocks. Furthermore, 5-block BCPs with different sequences could be synthesized by changing the addition order of the kinetic species during a sequentially seeded process. The corresponding heterogeneous nucleation-elongation process has been confirmed by the UV/Vis absorption spectra, and each segment of the multiblock copolymers could be characterized by both TEM and SEM. Interestingly, the energy transfer leads to weakened emission of 1 -terminated and enhanced emission of 3 -terminated BCPs. This study will be an important step in advancing the synthesis and properties of three-component BCPs. |
| Keywords: | Ir(III) Complexes Kinetic Control Multiblock One-Dimensional Three-Component |