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1.
J Colloid Interface Sci ; 445: 213-218, 2015 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-25618240

RESUMO

A free-standing, flexible, transparent, and fluorescent superhydrophobic composite film is fabricated by drop-casting a layer of organic self-assembled flowerlike micro/super-nanostructures on top of a hydrophobic polyimide film. The solution process to grow the organic super-nanostructures, fabricate the composite film, and lift-off the film from the mother substrate, ensures the process simplicity, low-cost, and scalability. The water contact angle (CA) of the superhydrophobic composite films reaches as high as 159.6°, and the sliding angle (SA) is less than 2° without any further low surface energy treatment. The as-prepared film shows superhydrophobicity with a CA above 150° covering the entire pH range. Moreover, the composite film exhibits good environmental stability against both organic solvent treatment and being exposed to acidic and aqueous solutions. The fluorescence from the composite film extends the potential application of the film into the optoelectronic field. The results may open up an avenue to prepare smart and intelligent superhydrophobic films for application.

2.
Nat Commun ; 4: 1971, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23736123

RESUMO

Adopting the emerging technology of printed electronics in manufacturing novel ultrathin flat panel displays attracts both academic and industrial interests because of the challenge in the device physics and the potential of reducing production costs. Here we produce all-solution processed polymer light-emitting diode displays by solution-depositing the cathode and utilizing a multifunctional buffer layer between the cathode and the organic layers. The use of ink-jetted conducting nanoparticles as the cathode yields high-resolution cathode patterns without any mechanical stress on the organic layers. The buffer layer, which offers the functions of solvent-proof electron injection and proper affinity, is fabricated by mixing the water/alcohol-soluble polymer and a curable epoxy adhesive. Our 1.5-inch polymer light-emitting diode displays are fabricated without any dead pixels or dead lines. The all-solution process eliminates the need for high vacuum for thermal evaporation of the cathode, which paves the way to industrial roll-to-roll manufacturing of flat panel displays.

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