Enhanced Stability toward Humidity in a Family of Hybrid Ultramicroporous Materials Incorporating Cr2O72– Pillars
| Autor: | Hayley S. Scott, Alankriti Bajpai, John J. Perry, Mohana Shivanna, Michael J. Zaworotko, Kai-Jie Chen, David G. Madden |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Moisture
010405 organic chemistry Durene Xylene Humidity Nanotechnology General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences Stability (probability) 0104 chemical sciences Crystal chemistry.chemical_compound chemistry Chemical engineering General Materials Science Gas separation Selectivity |
| Zdroj: | Crystal Growth & Design. 17:1933-1937 |
| ISSN: | 1528-7505 1528-7483 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|