title: Electroluminescence from Spontaneously Generated Single-Vesicle Aggregates Using Solution-Processed Small Organic Molecules.
abstract: Self-assembled aggregates offer great potential for tuning the morphology of organic semiconductors, thereby controlling their size and shape. This is particularly interesting for applications in electroluminescent (EL) devices, but there has been, to date, no reports of a functional EL device in which the size and color of the emissive domains could be controlled using self-assembly. We now report a series of molecules that spontaneously self-organize into small EL domains of sub-micrometer dimensions. By tailoring the emissive chromophores in solution, spherical aggregates that have an average size of 300 nm in diameter and emit any one color, including CIE D65 white, are spontaneously formed in solution. We show that the individual aggregates can be used in EL devices built either using small patterned electrodes or using a sandwich architecture to produce devices emitting in the blue, green, red, and white. Furthermore, sequential deposition of the three primary colors yields an RGB device in which single aggregates of each color are present in close proximity.
authors.affiliation: Institute of Molecular Science, CNRS UMR 5255 and University of Bordeaux , F-33405 Talence, France.|IMS, University of Bordeaux, Bordeaux INP, ENSCBP, CNRS UMR 5218 , F-33400 Talence, France.
authors.forename: Yu-Tang
authors.initials: YT
authors.lastname: Tsai
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 10617, Taiwan.
authors.forename: Kuo-Pi
authors.initials: KP
authors.lastname: Tseng
authors.affiliation: Institute of Molecular Science, CNRS UMR 5255 and University of Bordeaux , F-33405 Talence, France.|IMS, University of Bordeaux, Bordeaux INP, ENSCBP, CNRS UMR 5218 , F-33400 Talence, France.
authors.forename: Yan-Fang
authors.initials: YF
authors.lastname: Chen
authors.affiliation: Department of Electrical Engineering, Graduate Institute of Electronics Engineering, Graduate Institute of Photonics and Optoelectronics, and Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University , Taipei 10617, Taiwan.
authors.forename: Chung-Chih
authors.initials: CC
authors.lastname: Wu
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 10617, Taiwan.
authors.forename: Gang-Lun
authors.initials: GL
authors.lastname: Fan
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 10617, Taiwan.
authors.forename: Ken-Tsung
authors.initials: KT
authors.lastname: Wong
authors.affiliation: IMS, University of Bordeaux, Bordeaux INP, ENSCBP, CNRS UMR 5218 , F-33400 Talence, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Wantz
authors.affiliation: IMS, University of Bordeaux, Bordeaux INP, ENSCBP, CNRS UMR 5218 , F-33400 Talence, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Hirsch
authors.affiliation: Institute of Molecular Science, CNRS UMR 5255 and University of Bordeaux , F-33405 Talence, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Raffy
authors.affiliation: Institute of Molecular Science, CNRS UMR 5255 and University of Bordeaux , F-33405 Talence, France.
authors.forename: Andre
authors.initials: A
authors.lastname: Del Guerzo
authors.affiliation: Institute of Molecular Science, CNRS UMR 5255 and University of Bordeaux , F-33405 Talence, France.
authors.forename: Dario M
authors.initials: DM
authors.lastname: Bassani
keywords: biuret; molecular electronics; soft matter; supramolecular chemistry