Coumarin intercalated layered double hydroxides thin films prepared by laser techniques

Vlad Angelica; Tirca Ion; Rotaru Andrei; Birjega Ruxandra; Secu Mihail; Matei Andreea; Zavoianu Rodica

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2022-12-12 17:32

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VLAD, Angelica, TIRCA, Ion, ROTARU, Andrei, BIRJEGA, Ruxandra, SECU, Mihail, MATEI, Andreea, ZAVOIANU, Rodica. Coumarin intercalated layered double hydroxides thin films prepared by laser techniques. In: Central and Eastern European Conference on Thermal Analysis and Calorimetry, Ed. 4, 28-31 august 2017, Chişinău. Germany: Academica Greifswald, 2017, Editia 4, p. 79. ISBN 978-3-940237-47-7.

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Central and Eastern European Conference on Thermal Analysis and Calorimetry
Editia 4, 2017

Conferința "Central and Eastern European Conference"
4, Chişinău, Moldova, 28-31 august 2017

Coumarin intercalated layered double hydroxides thin films prepared by laser techniques

Pag. 79-79

Vlad Angelica¹, Tirca Ion¹², Rotaru Andrei¹, Birjega Ruxandra¹, Secu Mihail³, Matei Andreea¹, Zavoianu Rodica⁴

¹ National Institute for Laser, Plasma and Radiation Physics (INFLPR),
² University of Craiova,
³ National Institute of Materials Physics Bucharest-Magurele,
⁴ University of Bucharest

Disponibil în IBN: 21 august 2019

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Layered double hydroxides (LDHs) are a class of anionic clays consisting of positivelycharged brucite-like layers between which are intercalated anions and water molecules. LDHs containing Mg2+ and Al3+ cations with molar ratio of 2.5 were prepared by co-precipitation. Intercalation of an organic chromophore in layered double hydroxide (LDH) materials was done by reconstruction method. Coumarin intercalated inside the interlayers, induce changes in their morphology and in optical properties. X-ray diffraction (XRD), FT-IR spectroscopy, thermogravimetric analysis and differential thermal analysis (TG-DTA) analysis on prepared powders shows that the coumarin-343 has been successfully intercalated into LDH matrix. The minimal amount of incorporated coumarin-343 is 1.1% and was determined by TG analysis. Thin films of coumarin intercalated in LDH structure have been prepared by pulsed laser deposition (PLD) using a Nd:YAG laser working at 532 nm and 1064 nm and 10 Hz repetition rate [1,2]. The optical properties of hybrid thin films were characterized by photoluminescence spectra with the excitation wavelength of 380 nm pumped by Xe lamp.

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