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White Light-Emitting Electrochemical Cells Based on the Langmuir-Blodgett Technique

White Light-Emitting Electrochemical Cells Based on the Langmuir-Blodgett Technique

Jesús M Fernández-Hernández, Luisa De Cola, Henk J Bolink, Miguel Clemente-León, Eugenio Coronado, Alicia Forment-Aliaga, Angel López-Muñoz, Diego Repetto

Langmuir. 2014 Nov 25;30(46):14021-9.

PMID: 25347390

Abstract:

Light-emitting electrochemical cells (LECs) showing a white emission have been prepared with Langmuir-Blodgett (LB) films of the metallosurfactant bis[2-(2,4-difluorophenyl)pyridine][2-(1-hexadecyl-1H-1,2,3-triazol-4-yl)pyridine]iridium(III) chloride (1), which work with an air-stable Al electrode. They were prepared by depositing a LB film of 1 on top of a layer of poly(N,N'-diphenyl-N,N'-bis(4-hexylphenyl)-[1,1'-biphenyl]-4,4'-diamine (pTPD) spin-coated on indium tin oxide (ITO). The white color of the electroluminescence of the device contrasts with the blue color of the photoluminescence of 1 in solution and within the LB films. Furthermore, the crystal structure of 1 is reported together with the preparation and characterization of the Langmuir monolayers (π-A compression isotherms and Brewster angle microscopy (BAM)) and LB films of 1 (IR, UV-vis and emission spectroscopy, X-ray photoelectron spectroscopy (XPS), specular X-ray reflectivity (SXR), and atomic force microscopy (AFM)).

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP138171149	N,N′-Diphenyl-N,N′-di-p-tolylbenzene-1,4-diamine		138171-14-9	Price

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