A new soft-matter material with old chemistry: Passerini multicomponent polymerization-induced assembly of AIE-active double-helical polymers with rapid visible-light degradability.
A new soft-matter material with old chemistry: Passerini multicomponent polymerization-induced assembly of AIE-active double-helical polymers with rapid visible-light degradability.
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一种具有旧化学性质的新型软物质材料：帕瑟里尼多组分聚合诱导的具有快速可见光降解能力的AUIE活性双螺旋聚合物的组装
DOI：
10.1039/d0sc02729d
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发表时间：
2020-07-15
期刊：
影响因子：
8.4
通讯作者：
Yu Y
中科院分区：
文献类型：
--
作者：
Liu J;Luo Z;Yu L;Zhang P;Wei H;Yu Y
模拟天然手性物质的超结构和功能，有助于了解生物体中特定的生物活性，拓宽其在化学和材料科学领域的应用。然而，构建具有多重响应性的水溶性双螺旋聚合物仍然是一个巨大的挑战。在此，我们报告第一次一个简单的，一般的策略来解决这个问题，利用Passerini多组分聚合诱导组装（PMPIA）。聚合诱导的手性α-酰氧基酰胺超分子相互作用的产生驱动聚合物的组装并提高其在各种溶剂中的稳定性。这种双螺旋聚合物对金属离子、温度、pH和溶剂敏感，使得超结构和AIE效应都是可逆可调的。同时，氢键辅助的光不稳定的α-酰氧基酰胺的环化反应加速了螺旋聚合物在可见光照射下的降解。预计这种新的PMPIA策略开辟了新的视野，以激发具有多功能的先进手性/螺旋聚合物的设计。Passerini多组分聚合诱导组装被报道设计了一种水溶性的、AIE活性的、双螺旋聚合物，其对外部刺激具有可逆的多响应性和快速的可见光降解性。
Mimicking the superstructures and functions of natural chiral materials is beneficial to understand specific biological activities in living organisms and broaden applications in the fields of chemistry and materials sciences. However, it is still a great challenge to construct water-soluble, double-helical polymers with multiple responsiveness. Herein, we report for the first time a straightforward, general strategy to address this issue by taking advantage of Passerini multicomponent polymerization-induced assembly (PMPIA). The polymerization-induced generation of supramolecular interactions in chiral α-acyloxy amides drives the assembly of polymers and improves their stability in various solvents. This double-helical polymer is sensitive to metal ions, temperature, pH, and solvents, making both the superstructure and the AIE effect reversibly adjustable. Meanwhile, the hydrogen-bonding-assisted cyclization of photolabile α-acyloxy amides accelerates the degradation of helical polymers under visible-light irradiation. It is anticipated that this novel PMPIA strategy opens new horizons to inspire the design of advanced chiral/helical polymers with multiple functions. Passerini multicomponent polymerization-induced assembly is reported to design a water-soluble, AIE-active, double-helical polymer with reversible multi-responsiveness to external stimuli and rapid visible-light degradability.
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