The effect of UV radiation on cinnamate/layered double hydroxide (LDH) composites

Kameshima, Yoshikazu; Nakada, Aya; Isobe, Toshihiro; Nakajima, Akira; Okada, Kiyoshi

doi:10.2109/jcersj2.121.303

Cited by 3 publications

(1 citation statement)

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“…Cinnamate can be intercalated into layered hydroxides, as first demonstrated in an example of layered double hydroxides (LDHs) [ 22 , 25 , 26 ]. Upon UV irradiation of those LDHs, the isomerisation of the cinnamate anion occurred, according to 13 C NMR and FT-IR analysis.…”

Section: Introductionmentioning

confidence: 99%

Cinnamate-Intercalated Layered Yttrium Hydroxide: UV Light-Responsive Switchable Material

Teplonogova,

Yapryntsev,

Baranchikov

et al. 2023

Micromachines

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In recent years, there has been an increasing interest in stimuli-responsive host–guest materials due to the high potential for their application in switchable devices. Light is the most convenient stimulus for operating these materials; a light-responsive guest affects the host structure and the functional characteristics of the entire material. UV-transparent layered rare earth hydroxides intercalated with UV-switchable anions are promising candidates as stimuli-responsive host–guest materials. The interlayer distance in the layered rare earth hydroxides depends on the size of the intercalated anions, which could be changed in situ, e.g., via anion isomerisation. Nevertheless, for layered rare earth hydroxides, the possibility of such changes has not been reported yet. A good candidate anion that is capable of intercalating into the interlayer space is the cinnamate anion, which undergoes UV-assisted irreversible trans–cis isomerisation. In this work, both trans- and cis-cinnamate anions were intercalated in layered yttrium hydroxide (LYH). Upon UV-irradiation, the interlayer distance of trans-cinnamate-intercalated layered yttrium hydroxide suspended in isopropanol changed from 21.9 to 20.6 Å. For the first time, the results obtained demonstrate the possibility of using layered rare earth hydroxides as stimuli-responsive materials.

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Section: Introductionmentioning

confidence: 99%