Enhanced Stability toward Humidity in a Family of Hybrid Ultramicroporous Materials Incorporating Cr2O72- Pillars

Hayley S. Scott, Mohana Shivanna, Alankriti Bajpai, Kai Jie Chen, David G. Madden, John J. Perry, Michael J. Zaworotko

Research output: Contribution to journalArticlepeer-review

Abstract

Dichromate (Cr2O72-) pillared pcu hybrid ultramicroporous materials, while previously shown to exhibit benchmark selectivity for small polarizable gases, sometimes suffer from poor stability when exposed to moisture, which could limit their potential application in gas separation systems. In attempting to improve their stability toward humidity, we have crystal engineered two new families of DICRO-L-M-i materials of formula [M(L)2(Cr2O7)]n (M = Ni2+, Co2+ L = 5: 1,4-bis(4-pyridyl)xylene; 6: 1,4-bis(4-pyridyl)durene). Evaluating these materials in combination with a previously reported analogue, DICRO-4-Ni-i, in terms of their stability toward humidity has revealed a relationship between increasing the number of methyl groups on the dipyridyl organic linkers and a greater stability toward humidity.

Original languageEnglish
Pages (from-to)1933-1937
Number of pages5
JournalCrystal Growth and Design
Volume17
Issue number4
DOIs
Publication statusPublished - 5 Apr 2017

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