Small Molecule Crystals With 1d Water Wires Modulate Electronic Properties Of Surface Water Networks
APPLIED MATERIALS TODAY(2021)
摘要
This study evaluates the effect of water vapor pressure on the surface conductivity of a hydrated small molecule crystal under dry and wet conditions. The crystal contains a discrete metal complex with waters of hydration in structural positions and in 1D water wires. Under dry conditions, the surface of the hydrated crystal behaves as a near ideal capacitor. Under wet conditions, the waters of hydration serve as a template to assemble surface water networks by organization of water from the environment. The surface water provides pathways for charge transfer attributed to proton mobility that increases conductivity by > 3 orders in magnitude. Modulation between wet and dry conditions tunes the conductivity of the crystal surface via a two-step process, which has been evaluated kinetically as a function of the water vapor pressure. (C) 2020 Elsevier Ltd. All rights reserved.
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关键词
Surface conductivity, Electronic properties, Proton mobility, Water wires, Humidity sensor
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