Anhui Engineering Research Center of Highly Reactive Micro-Nano Powders, School of Materials and Environmental Engineering, Chizhou University, Chizhou 247000, PR China.
Anhui Engineering Research Center of Highly Reactive Micro-Nano Powders, School of Materials and Environmental Engineering, Chizhou University, Chizhou 247000, PR China.
Int J Biol Macromol. 2024 Oct;278(Pt 4):134875. doi: 10.1016/j.ijbiomac.2024.134875. Epub 2024 Aug 24.
Nonconjugated fluorescent polymers devoid of large π-π conjugated structures have received considerable attention due to their significant academic importance and broad application potentials in various fields. Herein, we report an effective strategy to fabricate multifunctional fluorescent amylopectin derivatives and reveal their unique aspects of aggregation-induced emission (AIE), cryogenic long-persistent phosphorescence (~6 s) and excellent processabilities characteristics, which are extremely different from traditional luminogens. These amylopectin-graft-poly(n-butyl acrylate-co-1-vinylimidazole) copolymers (Amylopectin-BVs) prepared by the grafting-from method employing RAFT and experienced subsequently with metal-ligand cross-linking. Specifically, clustering-triggered fluorescent emission or cryogenic long-persistent phosphorescence of amylopectin could be achieved by the aggregation of oxygen and nitrogen atoms along with conformation rigidification, which shows great promise in optoelectronic and biological applications.
由于其在各个领域具有重要的学术意义和广泛的应用潜力，无大π-π共轭结构的非共轭荧光聚合物受到了相当大的关注。在此，我们报告了一种有效制备多功能荧光支链淀粉衍生物的策略，并揭示了其独特的聚集诱导发射（AIE）、低温长余辉（~6 s）和优异的加工性能特征，这与传统发光体有很大的不同。这些通过 RAFT 接枝法制备的支链淀粉接枝聚（正丁基丙烯酸酯-co-1-乙烯基咪唑）共聚物（Amylopectin-BVs），随后经历了金属配体交联。具体来说，通过氧和氮原子的聚集以及构象的刚性化，可以实现支链淀粉的聚集诱导荧光发射或低温长余辉磷光，这在光电和生物应用方面具有广阔的前景。
