Lewis Acid Guests in {P8W48} Archetypal Polyoxotungstate Host: Enhanced Proton Conductivity via Cluster within Cluster Assemblies

Peng Yang; Maryam Alsufyani; Abdel hamid Amwas; Chaoqin Chen; Niveen M. Khashab

doi:10.1002/anie.201806086

Lewis Acid Guests in {P8W48} Archetypal Polyoxotungstate Host: Enhanced Proton Conductivity via Cluster within Cluster Assemblies

Peng Yang, Maryam Alsufyani, Abdel hamid Amwas, Chaoqin Chen, Niveen M. Khashab

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Abstract

Complexes made by hosts that completely surround their guests provide a mean to stabilize reactive chemical intermediates, transfer biologically active cargo to a diseased cell, and construct molecular scale devices. By the virtue of inorganic host-guest self-assembly, nucleation processes in the cavity of a {P8W48}-archetype phosphotungstate has afforded a nanoscale 16-AlIII-32-oxo cluster and its GaIII analogue that contain the largest number of AlIII/GaIII ions yet found in POM chemistry. Interestingly, the rich Lewis acid AlIII centers within the Lewis base POM support shows an exceptional proton conductivity of 4.5 × 10-2 S cm-1 (85 °C, 70% RH; RH: relative humidity), which is by far the highest conductivity reported among POM-based crystalline proton conductors.

Original language	English (US)
Pages (from-to)	13046-13051
Number of pages	6
Journal	Angewandte Chemie International Edition
Volume	57
Issue number	40
DOIs	https://doi.org/10.1002/anie.201806086 https://doi.org/10.1002/ange.201806086
State	Published - Jul 30 2018

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title = "Lewis Acid Guests in {P8W48} Archetypal Polyoxotungstate Host: Enhanced Proton Conductivity via Cluster within Cluster Assemblies",

abstract = "Complexes made by hosts that completely surround their guests provide a mean to stabilize reactive chemical intermediates, transfer biologically active cargo to a diseased cell, and construct molecular scale devices. By the virtue of inorganic host-guest self-assembly, nucleation processes in the cavity of a {P8W48}-archetype phosphotungstate has afforded a nanoscale 16-AlIII-32-oxo cluster and its GaIII analogue that contain the largest number of AlIII/GaIII ions yet found in POM chemistry. Interestingly, the rich Lewis acid AlIII centers within the Lewis base POM support shows an exceptional proton conductivity of 4.5 × 10-2 S cm-1 (85 °C, 70% RH; RH: relative humidity), which is by far the highest conductivity reported among POM-based crystalline proton conductors.",

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AU - Yang, Peng

AU - Alsufyani, Maryam

AU - Amwas, Abdel hamid

AU - Chen, Chaoqin

AU - Khashab, Niveen M.

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2018/7/30

Y1 - 2018/7/30

N2 - Complexes made by hosts that completely surround their guests provide a mean to stabilize reactive chemical intermediates, transfer biologically active cargo to a diseased cell, and construct molecular scale devices. By the virtue of inorganic host-guest self-assembly, nucleation processes in the cavity of a {P8W48}-archetype phosphotungstate has afforded a nanoscale 16-AlIII-32-oxo cluster and its GaIII analogue that contain the largest number of AlIII/GaIII ions yet found in POM chemistry. Interestingly, the rich Lewis acid AlIII centers within the Lewis base POM support shows an exceptional proton conductivity of 4.5 × 10-2 S cm-1 (85 °C, 70% RH; RH: relative humidity), which is by far the highest conductivity reported among POM-based crystalline proton conductors.

AB - Complexes made by hosts that completely surround their guests provide a mean to stabilize reactive chemical intermediates, transfer biologically active cargo to a diseased cell, and construct molecular scale devices. By the virtue of inorganic host-guest self-assembly, nucleation processes in the cavity of a {P8W48}-archetype phosphotungstate has afforded a nanoscale 16-AlIII-32-oxo cluster and its GaIII analogue that contain the largest number of AlIII/GaIII ions yet found in POM chemistry. Interestingly, the rich Lewis acid AlIII centers within the Lewis base POM support shows an exceptional proton conductivity of 4.5 × 10-2 S cm-1 (85 °C, 70% RH; RH: relative humidity), which is by far the highest conductivity reported among POM-based crystalline proton conductors.

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Lewis Acid Guests in {P8W48} Archetypal Polyoxotungstate Host: Enhanced Proton Conductivity via Cluster within Cluster Assemblies

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CSD 1865120: Experimental Crystal Structure Determination

CSD 1865119: Experimental Crystal Structure Determination

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Lewis Acid Guests in {P8W48} Archetypal Polyoxotungstate Host: Enhanced Proton Conductivity via Cluster within Cluster Assemblies

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CSD 1865120: Experimental Crystal Structure Determination

CSD 1865119: Experimental Crystal Structure Determination

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