天津大学闫熙博团队报道了四唑键作为光活化燃料用于多功能聚合物纳米平台的光调节光热/光催化推进。相关研究成果于2023年5月24日发表在《德国应用化学》。

具有多模推进的胶体马达由于其可运输性的增强而引起了相当大的关注。制造由单个马达提供动力的胶体马达用于多模协同推进是一个巨大的挑战。

该文中，研究人员报道了Janus多功能聚合物纳米平台，该平台通过四唑键集成了各种功能，用于液体中的光调节多模协同推进。聚合物中四唑键的存在赋予了纳米颗粒不同的光响应能力。唯一的能源（紫外线或可见光）同时激活不对称纳米颗粒一侧的含四唑聚合物相中的光催化N₂释放和光热转换，用于将光能转换为独立于周围化学介质的光热/光催化推进。使用四唑作为光触发燃料的光活化运动与光波长、光功率和四唑含量高度一致。能够将各种功能结合到聚合物纳米颗粒中的四唑键能够按需定制胶体马达，在生物应用中显示出巨大的潜力。

附：英文原文

Title: Tetrazole linkages as photoactivated fuels for light-regulated photothermal/photocatalytic propulsion of versatile polymer nanoplatforms

Author: Jingjun Jin, Yun Li, Dongsheng Cao, Shuai Wang, Xibo Yan

Issue&Volume: 2023-05-24

Abstract: Colloidal motors with multimode propulsion have attracted considerable attention because of enhanced transportability. It is a great challenge to fabricate colloidal motors powered by a single engine for multimode synergistic propulsion. Herein, we report on Janus versatile polymer nanoplatforms integrating various functionalities via tetrazole linkages for light-regulated multimode synergistic propulsion in the liquid. The presence of tetrazole linkages in the polymers endows the nanoparticles with various photoresponsive capabilities. A sole energy source (ultraviolet or visible light) simultaneously activates photocatalytic N2 release and photothermal conversion within the tetrazole-containing polymer phase at one side of asymmetric nanoparticles for converting light energy into photothermal/photocatalytic propulsion independent of the surrounding chemical medium. The photoactivated locomotion using tetrazoles as light-triggered fuels highly corresponds to light wavelengths, light powers and tetrazole contents. The tetrazole linkages capable of incorporating various functionalities to the polymer nanoparticles allow on-demand customizing of the colloidal motors, showing great potential in bio-applications.

DOI: 10.1002/anie.202306169

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202306169