Solvate and protic ionic liquids from aza-crown ethers: synthesis, thermal properties, and LCST behavior
作者:Yukiko Oba、Megumi Okuhata、Toshiyuki Osakai、Tomoyuki Mochida
DOI:10.1039/c7cp02807e
日期:——
In recent years, solvate and protic ionic liquids (ILs) have attracted much attention. We synthesized both types of ILs from alkyl aza-crown ethers (L = N-propyl-1-aza-15-crown-5 (L1) and N-C6F13C2H4-1-aza-15-crown-5 (L2)). The solvate ILs [ML][Tf2N] (M = Na+, K+) were solids (Tm = 58–68 °C), whereas the solvate ILs [ML][Tf2N] (M = Li+, Ag+) and protic ILs [HL][Tf2N] were liquids with low glass transition
近年来,溶剂化物和质子离子液体(ILs)引起了很多关注。我们从烷基氮杂-皇冠醚(L = N-丙基-1-氮杂-15-皇冠-5(L 1)和N -C 6 F 13 C 2 H 4 -1-氮杂-15-合成了两种类型的IL表冠5(L 2))。溶剂化ILs [ML] [Tf 2 N](M = Na +,K +)为固体(T m = 58–68°C),而溶剂化ILs [ML] [Tf 2 N](M = Li +,Ag +)和质子ILs [HL] [Tf 2N]是玻璃化转变温度低的液体。含有Na离子的IL比其他IL更结晶,并且具有更高的熔点。质子IL的分解温度高于溶剂化物IL的分解温度。还合成了具有顺磁性阴离子的质子IL [HL 1 ] [FeCl 4 ](T m = 70.5°C),并确定了其晶体结构。该溶剂化物离子液体[NAL 2 ] [X](X =氯-,CF 3 CO 2 -,TSO -,PhSO 3