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In situ synthesis of ultrafine metal clusters triggered by dodecaborate supramolecular organic frameworks†
Nanoscale ( IF 5.8 ) Pub Date : 2018-10-08 00:00:00 , DOI: 10.1039/c8nr06917d
Bin Qi 1, 2, 3, 4 , Xin Li 1, 2, 3, 4 , Liang Sun 1, 2, 3, 4 , Bo Chen 1, 2, 3, 4 , Hao Chen 1, 2, 3, 4 , Chenchen Wu 1, 2, 3, 4 , Haibo Zhang 1, 2, 3, 4, 5 , Xiaohai Zhou 1, 2, 3, 4, 5
Affiliation  

Supramolecular nano-assemblies with tunable morphology have attracted extensive attention in composite material manufacturing and many other fields. Herein, a new class of shape-controlled dodecaborate-based supramolecular organic frameworks (BOFs), decorated with diverse ultrafine noble metal clusters (Au, Pd, Pt, Ag), has been successfully fabricated via the tunable host–guest assembly of cucurbit[n = 5,6,7,8]uril and Cs2[closo-B12H12]. Due to the unique dodecaborate-cucurbit[n]uril chaotropic effect, a breakthrough has been made in modulating the supramolecular frameworks in the urchin-like, network-like or octahedron-like structures without tedious chemical modifications or additional additives. More interestingly, Cs2[closo-B12H12], a prominent component in supramolecular structures, can also play dual roles as an excellent reductant and capping agent for the formation of metal clusters. The final product, i.e., BOFs decorated with ultrafine metal clusters (metal/BOFs) can be precipitated from aqueous solutions rapidly and they show high catalytic activity and recyclability in Suzuki reactions and in the selective reduction of furfural (FAL) to furfuryl alcohol (FOL).

中文翻译:

十二分解超分子有机骨架引发的超细金属簇的原位合成

具有可调节形态的超分子纳米组装件在复合材料制造和许多其他领域中引起了广泛的关注。在这里,通过可调的葫芦形主客体组装成功地制造了新型的形状控制的基于十二硼酸盐的超分子有机骨架(BOF),其中装饰有各种超细贵金属簇(Au,Pd,Pt,Ag)。n = 5,6,7,8] uril和Cs 2 [ closo -B 12 H 12]。由于独特的十二硼酸盐-葫芦[ur]离液序列效应,在调制无趣的化学修饰或添加添加剂的海胆状,网状或八面体状结构中的超分子构架方面取得了突破。更有趣的是,Cs 2 [ closo -B 12 H 12 ]是超分子结构中的重要组成部分,在形成金属簇的过程中,它还可以作为出色的还原剂和封端剂发挥双重作用。最终产品,,装饰有超细金属簇(BOF)的BOF可以从水溶液中快速沉淀出来,并且在Suzuki反应中以及在糠醛(FAL)选择性还原为糠醇(FOL)方面显示出高催化活性和可回收性。
更新日期:2018-10-08
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