Issue 39, 2010
From the journal:

Physical Chemistry Chemical Physics

Facile approaches to build ordered amphiphilic tris(phthalocyaninato) europium triple-decker complex thin films and their comparative performances in ozone sensing†

Yanli Chen,a   Marcel Bouvet,*a   Thibaut Sizun,a   Yingning Gao,b   Cedric Plassard,c   Eric Lesniewskac  and  Jianzhuang Jiang*b  

* Corresponding authors

a Institut de Chimie Moléculaire de l'Université de Bourgogne, CNRS UMR 5260, University of Bourgogne, 21078 Dijon, France
E-mail: [email protected]

b Department of Chemistry, University of Science and Technology Beijing, Beijing 100083, China

c Laboratoire Interdisciplinaire Carnot de Bourgogne, CNRS UMR 5209, University of Bourgogne, 21078 Dijon, France

Abstract

Solution processed thin films of an amphiphilic tris(phthalocyaninato) rare earth triple-decker complex, Eu2[Pc(15C5)4]2[Pc(OC10H21)8], have been prepared from three different methods: self-assembly (SA) annealed in solvent vapor, quasi-Langmuir–Shäfer (QLS) and drop casting methods. In particular, we successfully developed a simple QLS process for fabricating ordered multilayers with a good thickness control. The films prepared from three different methods were characterized by a wide range of methods including electronic absorption spectra, IR, X-ray diffraction, atomic force microscopy (AFM), and current–voltage (I–V) measurements. J-type aggregates have been formed with the increasing degree of order of molecular stacking Cast < QLS < SA films. Moreover, the gas sensing behavior of the three types of films was investigated towards ozone in the 8–300 ppb range. Unexpectedly good sensitive, stable and reproducible responses to O3 gas are obtained for these kinds of ultra-thin solution processed films in a fast response/recovery cycle of only 1/4 min. The response of Eu2[Pc(15C5)4]2[Pc(OC10H21)8] films is linearly correlated to the ozone concentration. The interaction between the Eu2[Pc(15C5)4]2[Pc(OC10H21)8] films and different ozone concentrations was found to follow first-order kinetics. Strikingly, QLS films showed the most stable response and the largest average sensor response rate constant among the three types of films.

Graphical abstract: Facile approaches to build ordered amphiphilic tris(phthalocyaninato) europium triple-decker complex thin films and their comparative performances in ozone sensing

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Article information

DOI
https://doi.org/10.1039/C0CP00381F
Article type
Paper
Submitted
28 Apr 2010
Accepted
30 Jun 2010
First published
27 Aug 2010

Phys. Chem. Chem. Phys., 2010,12, 12851-12861

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Facile approaches to build ordered amphiphilic tris(phthalocyaninato) europium triple-decker complex thin films and their comparative performances in ozone sensing

Y. Chen, M. Bouvet, T. Sizun, Y. Gao, C. Plassard, E. Lesniewska and J. Jiang, Phys. Chem. Chem. Phys., 2010, 12, 12851 DOI: 10.1039/C0CP00381F

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