Improving Channel Hydrate Stability via Localized Chemical Tuning of the Water Environment
Improving Channel Hydrate Stability via Localized Chemical Tuning of the Water Environment
复制标题
通过水环境的局部化学调节提高通道水合物稳定性
DOI:
10.1021/acs.cgd.1c00551
复制
发表时间:
2021
影响因子:
3.8
通讯作者:
Swift, Jennifer A.
中科院分区:
文献类型:
--
作者:
Watts, Taylor A.;Niederberger, Sara M.;Swift, Jennifer A.
One of the long-standing challenges in working with organic hydrates in general, and channel hydrates in particular, is their propensity to lose water over time and convert (either partially or fully) to anhydrous solid forms. In this work, we demonstrate the ability to rationally increase the thermal stability of a model channel hydrate, the DNA nucleobase thymine hydrate (TH), through the systematic creation of lattice substitutions with 5-aminouracil (AUr). Mixed crystals ofTH–AUrwith up to 17 mol % AUr were isomorphous with the pure hydrate, confirming our molecular-level design strategy which places 5-amino groups at the one-dimensional channel surfaces. The enhanced stabilization of the water molecules afforded by the proximal 5-amino substitutions resulted in mixed crystals with significantly higher thermal stability. The magnitude of the thermal stability enhancement scaled linearly with the includedAUrconcentration, yieldingTH–AUrdehydration temperatures nearly double that of the pure hydrate. Kinetic analyses and time-resolved synchrotron structural studies of process-induced dehydration of the mixed composition hydrate indicated changes in both the solid-state mechanism and the resultant anhydrous products compared to those generated from the pure hydrate. The strategy adopted herein should be applicable to other hydrate systems to rationally tune their thermal stabilities.
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DOI:
--
发表时间:
2003
期刊:
Journal of Pharmacy and Science
影响因子:
--
作者:
Deliang Zhou;E. Schmitt;Geoff G. Z. Zhang;D. Law;C. Wight;S. Vyazovkin;D. Grant
通讯作者:
D. Grant
影响因子:
3.8
作者:
Taylor A. Watts;Elizabeth K. Miehls;J. Swift
通讯作者:
Taylor A. Watts;Elizabeth K. Miehls;J. Swift
影响因子:
3.8
作者:
Braun DE;Griesser UJ
通讯作者:
Griesser UJ
影响因子:
3.1
作者:
J. E. Werner;J. Swift
通讯作者:
J. Swift
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
P. York;D. Grant
通讯作者:
D. Grant