Constructing supramolecular polymers from phototrigger containing monomer |
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Authors: | Xiuli Zheng Qi Miao Wenzhi Wang Da-Hui Qu |
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Affiliation: | Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai 200237, China |
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Abstract: | A new type of photo-induced supramolecular polymer was fabricated by host-guest interaction from a phototrigger containing building block. A dibenzo-24-crown-8 (DB24C8) macrocycle and dibenzylammonium (DBA) site containing linear monomer was designed and synthesized. The coumarin, as a photocleavable protector, was introduced to the terminal of the monomer. When exposed to the UV light, the coumarin unit would be cleavaged and the monomer without terminal coumarin can self-assemble into supramolecular polymers via the host-guest interaction between DB24C8 moieties and DBA units. Increasing the concentration of the monomer, the supramolecular polymers will convert to supramolecular organogel by cross-linking with each other. |
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Keywords: | Supramolecular polymer Host-guest recognition Photo-responsive Crown ether |
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