Photo-induced Isomerization and Polymerization of (Z, Z)-Muconate Anion in the Gallery Space of [LiAl2(OH)6]+ Layers

Bulletin of the Korean chemical society

Seog Woo Rhee¹  Duk-Young Jung¹ 

关键词: Muconates;    LDH;    Photoreactions;    Isomerization;    Polymerization.;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Photoreaction of guest organic anions in layered organic-inorganic hybrid materials was investigated. The layered hybrids were synthesized by an anion-exchange reaction of [LiAl₂(OH)₆]Cl·yH₂O layered double hydroxide with aqueous (Z,Z)- and (E,E)-muconates under inert atmospheric condition, to give new organic-inorganic hybrids of [LiAl₂(OH)₆]₂[(Z,Z)-C₆H₄O₄]·zH₂O and [LiAl₂(OH)₆]₂[(E,E)-C₆H₄O₄]·zH₂O, respectively. The basal spacings calculated by XRPD of intercalates indicate that muconate anions have almost vertical arrangements against the host [LiAl₂(OH)₆]⁺ lattices in the interlayer of organic-inorganic hybrid materials. When UV light was irradiated on the suspension of [LiAl₂(OH)₆]₂[(Z,Z)-C₆H₄O₄]·zH₂O, the (Z,Z)-muconate anions of the gallery space of hybrids were polymerized in the aqueous media while it was isomerized into more stable (E,E)-muconate in the methanollic suspension in the presence of catalytic amount of molecular iodine. All the products were characterized using elemental analysis, TGA, XRPD, FT-IR, ¹H NMR and ¹³C CP-MAS NMR.

【 授权许可】

Unknown