Chow, C.-F., Roy, V.A.L. , Ye, Z., Lam, M. H.W., Lee, C.S. and Lau, K.C. (2010) Novel high proton conductive material from liquid crystalline 4-(octadecyloxy)phenylsulfonic acid. Journal of Materials Chemistry, 20(30), pp. 6245-6249. (doi: 10.1039/c0jm00523a)
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Abstract
Liquid crystal based sulfonic acid, 4-(octadecyloxy)phenylsulfonic acid, 1, effectively transports protons at 80 °C under non-humidified conditions. At its smectic A liquid crystal state, the proton conductivity of 1 was measured to be 1.1 × 10−2 S cm−1. The proton conductivities of 1 at its molten and solid powder states were found to be 1.2 × 10−4 and 1.5 × 10−7 S cm−1, respectively. A lamellar structure of bilayer stacks of 1 with the sulfonic acid groups in a head-to-head configuration was found within the monodomain of SmA phase of 1 from in situ XRD and DFT calculation. We proposed that the efficient proton transporting property of 1 is highly correlated to the formation of supramolecular pathways between the molecules at its liquid crystal phase.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Vellaisamy, Professor Roy |
| Authors: | Chow, C.-F., Roy, V.A.L., Ye, Z., Lam, M. H.W., Lee, C.S., and Lau, K.C. |
| College/School: | College of Science and Engineering > School of Engineering |
| Journal Name: | Journal of Materials Chemistry |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 0959-9428 |
| ISSN (Online): | 1364-5501 |
| Published Online: | 15 June 2010 |
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