Small molecule crystals with 1D water wires modulate electronic properties of surface water networks
Small molecule crystals with 1D water wires modulate electronic properties of surface water networks
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DOI：
10.1016/j.apmt.2020.100895
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发表时间：
2021-03-01
影响因子：
8.3
通讯作者：
Grapperhaus, Craig A.
中科院分区：
文献类型：
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作者：
Saraei, Nina;Gupta, Alexander J.;Grapperhaus, Craig A.
本研究评估了在干燥和潮湿条件下水蒸气压对水合小分子晶体表面电导率的影响。该晶体包含一个离散的金属络合物与沃茨的水合结构的位置和一维水线。在干燥条件下，水合晶体的表面表现为接近理想的电容器。在潮湿条件下，水合沃茨水作为模板，通过组织环境中的水来组装地表水网络。表面水提供了归因于质子迁移率的电荷转移的途径，质子迁移率使电导率增加> 3个数量级。湿和干条件之间的调制调谐晶体表面的电导率通过一个两步的过程，这已被评估动力学作为水蒸气压的函数。(C)2020爱思唯尔有限公司保留所有权利。
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.