1D Ultrathin Peptoid Nanobelts‐Based Organic‐Inorganic Nanocomposite for Photo‐Controllable Chemo‐Enzymatic Cascade Catalysis

• Published in: Advanced functional materials 2024-11, Vol.34 (48), p.n/a
• Main Authors: Wu, Pengchao, Sui, Pengliang, Xu, Zejiang, Zhu, Lingrong, Jia, Yanyan, Dai, Sheng, Jin, Haibao, Lin, Shaoliang
• Format: Article
• Language: English
• Subjects: Azo compounds; Catalysis; Catalytic activity; Controllability; Irradiation; Isomerization; Nanocomposites; Nanomaterials; Nanospheres; Nanostructure; organic–inorganic hybrid nanocomposites; Oxidation; photo‐controllable catalytic performance; photo‐responsive feature; Self-assembly; Stimuli; ternary amphiphilic alternating azopeptoids; Thickness; ultrathin peptoids nanobelts
• ISSN: 1616-301X; 1616-3028
• DOI: 10.1002/adfm.202408583

The development of 1D stimuli‐responsive ultrathin organic nanomaterials (UTONMs)‐based hybrid nanocomposites with tailored functions is necessitated to construct hybrid catalysts with adjustable catalytic performance. Herein, the self‐assembly of ternary amphiphilic alternating azopeptoids into micron‐scaled ultrathin peptoid nanobelts (PNBs) is reported with a thickness of ≈2.2 nm. The pendants hydrophobic conjugate stacking mechanism is accountable for the formation of 1D long‐ranged‐ordered nanostructure, whose thickness is highly dependent on the length of the suspended side‐chains. The photo‐triggered reversible transition from PNBs to nanospheres (≈92 nm) is rendered by the photo‐isomerization of azobenzene moiety upon alternating irradiation with UV and visible lights. Moreover, the carboxyl‐modified aggregates are employed as supports to load Pd nanoparticles, successfully preparing hybrid nanocomposites. As a proof‐of‐concept experiment, the catalytic activity of both control and these hybrid nanocomposites are evaluated toward chemo‐enzymatic cascade catalysis for 3,3′,5,5′‐tetramethylbenzidine oxidation with in situ UV–vis spectroscopic monitor. Compared to nanospheres‐based systems, PNBs‐based nanocomposites exhibited larger catalytic performance, attributable to the ultrathin nanostructures and subsequent ultrahigh specific surface area. The photo‐controllable recyclable catalytic activity is effectively modulated using the alternative irradiation with UV and visible lights for three cycles. The work paves an appealing avenue to prepare UTONMs‐based stimuli‐responsive hybrid nanocomposites with controllable performance. 1D micron‐scaled ultrathin peptoid nanobelts (PNBs) with a thickness of 2.2 nm are generated using the self‐assembly of ternary amphiphilic alternating azopeptoids, exhibiting a photo‐triggered reversible transformation from PNBs to nanospheres. The ultrathin nanostructures and photo‐responsive ability of PNBs are advantageous for constructing stimuli‐responsive hybrid nanocomposites with a photo‐controllable catalytic performance.