Self-Assembly of Giant Mo240 Hollow Opening Dodecahedra

Journal of the American Chemical Society
Jiaomin LinYa-Qian Lan

Abstract

The synthesis of hollow opening polyhedral cages has always been an attractive but challenging goal, especially with regard to inorganic polyhedral cages. Herein, we present a novel, 240-nuclearity giant polymolybdate cage prepared via hydrothermal synthesis. This cage is composed of 20 tripod-shaped [Mo6O22(SO3)]n-/[Mo6O21(SO4)]n- building blocks with three connected vertices and 30 cubane-type [Mo4O16]n- edge building blocks, featuring a rare, nearly regular pentagonal dodecahedron with a large inner cavity (diameter up to 1.8 nm) and 12 opening pentagonal windows. This is the highest nuclearity hollow opening dodecahedral cage reported to date. Importantly, this cage exhibits good stability in solution, as revealed by scanning transmission electron microscopy (STEM), TEM, UV-vis, and Raman spectra. In addition, the bulk sample of this compound exhibits an ultrahigh proton conductivity of 1.03 × 10-1 S cm-1 at 80 °C and 98% relative humidity, which is the highest among polyoxometalate-based crystalline proton conductors.

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Citations

Jan 8, 2021·Chemical Communications : Chem Comm·Xin-Ying WangZhong-Min Su
Feb 2, 2021·Chemical Communications : Chem Comm·Rong WanJingping Wang
Nov 19, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Shan ZhangShuxia Liu
Jun 5, 2021·The Journal of Physical Chemistry. a·Enric Petrus, Carles Bo
Oct 28, 2021·Chemical Reviews·Alexander V VirovetsManfred Scheer

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