Tavakoli Javad, Joseph Nikita, Raston Colin L, Tang Youhong
Institute for NanoScale Science and Technology, College of Science and Engineering, Flinders University South Australia Australia
Centre for Health Technologies, School of Biomedical Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney Sydney Australia.
Nanoscale Adv. 2020 Jan 30;2(2):633-641. doi: 10.1039/d0na00044b. eCollection 2020 Feb 18.
The host-guest interaction approach, specifically the formation of hydrogen bonds, is an effective strategy for preparing luminescent hyper-branched polymers. The challenge here is how to optimize the binding strength and particle size to tune fluorescence properties. The aim of the current study was to optimize the guest (aggregation-induced emission molecule, AIE)-host (hyper-branched polymer, HBP) interaction in the development of an HBP/AIE complex (AIE-HBP) with tunable luminescence properties the formation of strong hydrogen bonds. Overall, a simple one-step method for the preparation of AIE-HBP was demonstrated. The method was based on the formation of hydrogen bonds among AIE molecules and HBP molecules, resulting in the development of a stable AIE-polymer complex. Compared to other techniques (direct polymerization or post-functionalization), the proposed technique was much simpler. The fluorescence properties of AIE-HBP were significantly enhanced compared to AIE alone and could be tuned during the formation of AIE-HBP by using a novel vortex fluidic device (VFD). The as-prepared AIE-HBP can be used to simultaneously enhance the mechanical properties of hydrogels while increasing the fluorescence properties.
主客体相互作用方法，特别是氢键的形成，是制备发光超支化聚合物的有效策略。这里的挑战在于如何优化结合强度和粒径以调节荧光性质。本研究的目的是在开发具有可调发光性质的HBP/AIE复合物（AIE-HBP）时，通过形成强氢键来优化客体（聚集诱导发光分子，AIE）-主体（超支化聚合物，HBP）相互作用。总体而言，展示了一种制备AIE-HBP的简单一步法。该方法基于AIE分子和HBP分子之间氢键的形成，从而形成稳定的AIE-聚合物复合物。与其他技术（直接聚合或后功能化）相比，所提出的技术要简单得多。与单独的AIE相比，AIE-HBP的荧光性质显著增强，并且在使用新型涡旋流体装置（VFD）形成AIE-HBP的过程中可以进行调节。所制备的AIE-HBP可用于同时增强水凝胶 的机械性能，同时提高荧光性质。
