Crystal Growth and Design p. 5388 - 5396 (2015)
Update date:2022-08-05
Topics:
Stappert, Kathrin
Lipinski, Gregor
Kopiec, Gabriel
Spielberg, Eike T.
Mudring, Anja-Verena
The synthesis and properties of a set of novel ionic liquid crystals with congruently shaped cations and anions are reported to check whether pairing mesogenic cations with mesogenic anions leads to a stabilization of a liquid crystalline phase. To that avail 1-alkyl-3-methyl-triazolium cations with an alkyl chain length of 10, 12, and 14 carbon atoms have been combined with p-alkyloxy-benzenesulfonate anions with different alkyl chain lengths (n = 10, 12, and 14). The corresponding triazolium iodides have been synthesized as reference compounds where the cation and anion have strong size and shape mismatch. The mesomorphic behavior of all compounds is studied by differential scanning calorimetry and polarizing optical microscopy. All compounds except 1-methyl-3-decyltriazolium iodide, which qualifies as an ionic liquid, are thermotropic ionic liquid crystals. All other compounds adopt smectic A phases. A comparison of the thermal phase behavior of the 1-methyl-3-decyltriazolium bromides to the corresponding p-alkoxy-benzensulfonates reveals that definitely the mesophase is stabilized by pairing the rod-shaped 1-alkyl-3-methyltriazolium cation with a rod-like anion of similar size.
View Morewebsite:http://www.sigmaaldrich.com
Contact:800 558-9160
Address:Industriestrasse 25CH-9471 Buchs SGSwitzerland
Henan PURUI Pharmaceutical Co., Ltd.
website:http://www.puruipharm.com
Contact:17739583555
Address:Yezhuangqiao,Xihua town, Henan province
Beyond Pharmaceutical Co., Ltd
Contact:+86-571-8195-3185
Address:No. 13-1, Liansheng Road, Yuhang District
KINHENG CHEMICAL(SHANGHAI)CO., LTD.
Contact:+8621-60490170
Address:Room401, No.28,Lane 189, Yangshupu Rd. Shanghai, China.
Beijing Mediking Biopharm Co., Ltd.
Contact:+86-10-89753524/81760121/81769521
Address:Hongxianghong Incubator, Beiqijia Town, Changping district, Beijing, China
Doi:10.1021/om9801709
(1998)Doi:10.1080/00397919808007033
(1998)Doi:10.1039/a804036b
(1998)Doi:10.1016/0960-894X(96)00037-6
(1996)Doi:10.1016/S0040-4020(98)00823-0
(1998)Doi:10.1016/S0040-4039(98)01796-1
(1998)