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Customizable Supraparticles Constructed from Catechol-Terminated Molecular Building Blocks with Controllable Intermolecular Interactions** |
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| Authors: | Yajing Zhang Jin Wang Dr. Yunxiang He Jiezhou Pan Xin Jin Dr. Jiaojiao Shang Dr. Guidong Gong Dr. Joseph J. Richardson Prof. Ian Manners Prof. Junling Guo |
| Affiliation: | 1. BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065 China National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan, 610065 China These authors contributed equally to this work.;2. BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065 China Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208 USA These authors contributed equally to this work.;3. BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065 China National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan, 610065 China;4. BMI Center for Biomass Materials and Nanointerfaces, College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065 China;5. Department of Chemical and Environmental Engineering, RMIT University, Melbourne, Victoria, 3000 Australia;6. Department of Chemistry, University of Victoria, Victoria, BC V8W 3V6 Canada |
| Abstract: | Colloidal supraparticles integrated with multicomponent primary particles come with emerging or synergetic functionalities. However, achieving the functional customization of supraparticles remains a great challenge because of the limited options of building blocks with tailorability and functional extensibility. Herein, we developed a universal approach to construct customizable supraparticles with desired properties from molecular building blocks obtained by the covalent conjugation of catechol groups with a series of orthogonal functional groups. These catechol-terminated molecular building blocks can assemble into primary particles driven by various intermolecular interactions (i.e. metal-organic coordination, host–guest, and hydrophobic interactions), and then further assemble into supraparticles governed by catechol-mediated interfacial interactions. Our strategy enables the formation of supraparticles with diverse functionalities, such as dual-pH responsiveness, light-controllable permeability, and non-invasive fluorescence labeling of living cells. The ease with which these supraparticles can be fabricated, and the ability to tailor their chemical and physical properties through the choice of metals and orthogonal functional groups used, should enable a variety of applications. |
| Keywords: | Colloids Functional Customization Molecular Building Blocks Self-Assembly Supraparticles |