White Light-Emitting Electrochemical Cells Based on the Langmuir鈥揃lodgett Technique

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• 作者：Jes煤s M. Fern谩ndez-Hern谩ndez ; Luisa De Cola ; Henk J. Bolink ; Miguel Clemente-Le贸n ; Eugenio Coronado ; Alicia Forment-Aliaga ; Angel L贸pez-Mu帽oz ; Diego Repetto
• 刊名：Langmuir
• 出版年：2014
• 出版时间：November 25, 2014
• 年：2014
• 卷：30
• 期：46
• 页码：14021-14029
• 全文大小：452K
• ISSN：1520-5827

文摘

Light-emitting electrochemical cells (LECs) showing a white emission have been prepared with Langmuir鈥揃lodgett (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鈥?diphenyl-N,N鈥?bis(4-hexylphenyl)-[1,1鈥?biphenyl]-4,4鈥?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 (蟺鈥?i>A compression isotherms and Brewster angle microscopy (BAM)) and LB films of 1 (IR, UV鈥搗is and emission spectroscopy, X-ray photoelectron spectroscopy (XPS), specular X-ray reflectivity (SXR), and atomic force microscopy (AFM)).