Porphyrin-layered double hydroxide/polymer composites as novel ecological photoactive surfaces

Eva Káfuňková; Kamil Lang; Pavel Kubát; Mariana Klementová; Jiří Mosinger; Miroslav Šlouf; Anne-Lise Troutier-Thuilliez; Fabrice Leroux; Vincent Verney; Christine Taviot-Guého

doi:10.1039/C0JM00746C

Porphyrin-layered double hydroxide/polymer composites as novel ecological photoactive surfaces†‡

Eva Káfuňková,^ab Kamil Lang,*^a Pavel Kubát,^c Mariana Klementová,^a Jiří Mosinger,^ab Miroslav Šlouf,^d Anne-Lise Troutier-Thuilliez,^e Fabrice Leroux,^e Vincent Verney^f and Christine Taviot-Guého*^e

Author affiliations

* Corresponding authors

^a Institute of Inorganic Chemistry of the AS CR, v.v.i., Husinec-Řež, Czech Republic
E-mail: lang@iic.cas.cz

^b Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, Praha, Czech Republic

^c J. Heyrovský Institute of Physical Chemistry of the AS CR, v.v.i., Dolejškova 3, Praha 8, Czech Republic

^d Institute of Macromolecular Chemistry of the AS CR, v.v.i., Heyrovského náměstí 2, Praha 6, Czech Republic

^e CNRS, UMR 6002, LMI, F-63177 Aubiere - Clermont Université, Université Blaise Pascal, Laboratoire des Matériaux Inorganiques, BP 10448, Clermont-Ferrand, France
E-mail: Christine.Taviot-Gueho@univ-bpclermont.fr

^f CNRS, UMR 6505, LPMM, F-63177 Aubiere - Clermont Université, Université Blaise Pascal, LPMM, BP 10448, Clermont-Ferrand, France

Abstract

Nanocontainer and nanofiller aspects of layered double hydroxides (LDH) were combined to prepare porphyrin-LDH/polymer composites for photoactive coatings. The suggested properties are derived from cytotoxicity of singlet oxygen, O₂(¹Δ_g), produced by interaction of molecular oxygen with excited porphyrin molecules located within the interlayer space of Zn_RAl and Mg_RAl LDH. Porphyrins, Pd(II)-5,10,15,20-tetrakis(4-carboxyphenyl) porphyrin (PdTPPC) and 5,10,15,20-tetrakis(4-sulfonatophenyl) porphyrin (TPPS) photoproducing O₂(¹Δ_g), were successfully intercalated into LDH hosts using the co-precipitation procedure and then used as fillers in two eco-friendly polymers, namely polyurethane (PU) and poly(butylene succinate) (PBS). Porphyrin-LDH/polymer composites were prepared either by the solvent cast/cross-linking technique or melt-compounding with different porphyrin-LDH filler loadings (up to 1.3 wt%). Both X-ray diffraction and transmission electron microscopy measurements indicate a good dispersion of porphyrin-LDH fillers into the polymer matrices and that the porphyrin molecules remain intercalated within LDH layers. The polymers do not block the diffusion of oxygen and the triplet states of the intercalated porphyrins in the composite films have enough long lifetimes to produce O₂(¹Δ_g) upon irradiation by visible light. The present composites allow the elaboration of photoactive surfaces with a precise control of the O₂(¹Δ_g) concentration depending on porphyrin-LDH filler loadings.

This article is part of the themed collection: Advanced Hybrid Materials

Journal of Materials Chemistry

Porphyrin-layered double hydroxide/polymer composites as novel ecological photoactive surfaces†‡

Abstract

Supplementary files

Article information

Download Citation

Permissions

Porphyrin-layered double hydroxide/polymer composites as novel ecological photoactive surfaces

Search articles by author

Spotlight

Advertisements