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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 19일 (목요일) 11:00~12:30 |
| Code |
MAT.P-403 |
| Subject |
Inclusion behavior of bioactive anions into the interlayer space of LDHs vs. LRHs |
| Authors |
Hyunsub Kim, Song-ho Byeon*
Department of Applied Chemistry, Kyung Hee University, Korea
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| Abstract |
Bioactive compounds are very sensitive to light, temperature, and oxygen, etc., which limit their applications. Thus, it is desired if we can stabilize these molecules and protect them from rapid degradation by intercalating them into layered inorganic lattices. In this work, two families with typical 2-dimensional structure, layered double hydroxides (LDHs) and layered rare earth hydroxides (LRHs), were compared as host materials for common bioactive molecules. LDHs have attracted great interest due to their wide possible applications in diverse fields such as healthcare, drug delivery, food, cosmetics, etc. LRHs are structurally similar to LDHs and consist of positively charged rare-earth hydroxide layers with exchangeable, charge-balancing anions in the interlayer space. Due to the unique structure and properties, LRHs have also been recently investigated for applications as adsorbents, catalysts, drug carriers, and additives. The exchange capacity and arrange mode of anions in the interlayer galleries of LDHs and LRHs depends on the net positive charge of their hydroxide layers. The positive charge density of LDHs with general formula M2+1-xM3+x(OH)2An-x/n·mH2O (A = interlayer anions) is controllable by adjusting M2+/M3+ ratio, whereas LRHs with general formula RE2(OH)5An-1/n·mH2O (RE = rare earths) have a fixed charge density. Here, we demonstrate the similarity and difference in inclusion phenomena of common bioactive molecules, cinnamate, salicylate, ascorbate, tocopheryl acid succinate and citrate, in the interlayer space of LDHs and LRHs. |
| E-mail |
henson4296@gmail.com |
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120th General Meeting of the KCS