Preparation and electrical behaviour of photoluminiscent intercalation compounds of thionine in layered phosphates

• Published in: Solid state ionics 1997-05, Vol.97 (1), p.217-222
• Main Authors: Rodrı́guez-Castellón, E, Jiménez-López, A, Olivera-Pastor, P, Mérida-Robles, J.M, Pérez-Reina, F.J, Alcántara-Rodrı́guez, M, Souto-Bachiller, F, Rodrı́guez-Rodrı́guez, L, Fortes, M, Ramos-Barrado, J.R
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Conductivity; Diffusion in solids; Exact sciences and technology; Intercalation; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Optical properties of specific thin films, surfaces, and low-dimensional structures; Physics; Self-diffusion and ionic conduction in nonmetals; Thionine; Tin phosphate; Transport properties of condensed matter (nonelectronic); Zirconium phosphate
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/S0167-2738(97)00023-4

Phyllogenic minerals expanded with luminescent propping molecules can be used to prepare photosensitive thin films in which complex energy transfer processes can be envisioned. In this communication, we report the preparation of stable linear chain polymers and lamellar assemblies of thionine by intercalation in layered tetravalent metal salts formulated as M(IV)(HPO 4) 2·H 2O with M=Sn and Zr. A.c. conductivity measurements of the intercalation compounds were carried out by impedance methods. All samples display low activation energies (∼0.3 eV), probably due to π interactions between the aromatic thionine rings.