纳米反应器
超分子化学
聚乙二醇
电喷雾电离
化学
水溶液
自组装
超分子组装
结晶学
材料科学
光化学
质谱法
纳米颗粒
纳米技术
晶体结构
物理化学
有机化学
色谱法
作者
Han Xiao,Chenxing Guo,Xu Chen,Linlin Shi,Binghui Liu,Zhe Zhang,Qixia Bai,Bo Song,Fangfang Pan,Shuai Lu,Xinju Zhu,Heng Wang,Xin‐Qi Hao,Mao‐Ping Song,Xiaopeng Li
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-02-09
卷期号:17 (4): 3723-3736
被引量:6
标识
DOI:10.1021/acsnano.2c10856
摘要
Water-soluble metallo-supramolecular cages with well-defined nanosized cavities have a wide range of functions and applications. Herein, we design and synthesize two series of metallo-supramolecular octahedral cages based on the self-assembly of two congeneric truxene-derived tripyridyl ligands modified with two polyethylene glycol (PEG) chains, i.e., monodispersed tetraethylene glycol (TEG) and polydispersed PEG-1000, with four divalent transition metals (i.e., Pd, Cu, Ni, and Zn). The resulting monodispersed cages C1-C4 are fully characterized by electrospray ionization mass spectrometry (ESI-MS), nuclear magnetic resonance (NMR) spectroscopy, and single-crystal X-ray diffraction. The polydispersed cages C5-C8 display good water solubilities and can act as nanoreactors to mediate visible-light-promoted C(sp3)-C(sp2) cross-dehydrogenative coupling reactions in an aqueous phase. In particular, the most robust Pd(II)-linked water-soluble polydispersed nanoreactor C5 is characterized by ESI-MS and capable of mediating the reactions with the highest efficiencies. Detailed host-guest binding studies in conjunction with control studies suggest that these cages could encapsulate the substrates simultaneously inside its hydrophobic cavity while interacting with the photosensitizer (i.e., eosin Y).
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