Anomalous Freezing of Nano-Confined Water in Room-Temperature Ionic Liquid 1-Butyl-3-Methylimidazolium Nitrate

Hiroshi Abe, Takahiro Takekiyo, Yukihiro Yoshimura, Koji Saihara, Akio Shimizu

Chemphyschem. 2016 Apr 18;17(8):1136-42.

PMID: 26841088

Abstract:

Non-crystal formation of ice is investigated by simultaneous X-ray diffraction and differential scanning calorimetry measurements upon cooling to -100 °C. At room temperature, size-tunable water confinement (≈20 Å size) in a room-temperature ionic liquid (RTIL, 1-butyl-3-methylimidazolium nitrate, [C4 mim][NO3 ]) exists in a water-rich region (70-90 mol % D2 O). The confined water (water pocket) is characterized by almost monodispersive size distribution. In [C4 mim][NO3 ]-x mol % D2 O (70

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP179075888	1-Butyl-3-methylimidazolium nitrate		179075-88-8	Price