Free-standing film electronics using photo-crosslinking layer-by-layer assembly

Park, Jeongju; Kim, Joohee; Lee, Seryun; Bang, Joona; Kim, Bumjoon J.; Kim, Youn Sang; Cho, Jinhan

doi:10.1039/b908568h

Cited by 22 publications

(23 citation statements)

References 25 publications

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“…8,9 Meanwhile, free-standing films have found great potential use as sensors, 10,11 barrier materials, 12 reflectors, 13 and electronic films. 14,15 Due to their unique properties including high flexibility, non-covalent adhesiveness, transparency and large aspect ratio, free-standing films have found new use in the biomedical field. [16][17][18][19][20][21][22][23] Fujie et al [16][17][18] reported the fabrication of a polysaccharide free-standing film via a spin-coating assisted layer-by-layer method, using alternating deposition of oppositely charged polysaccharides through electrostatic interactions.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Free-Standing Film with Multifunctional Anti-Bacterial and Self-Cleaning Properties

Shen

Wang

et al. 2012

ACS Appl. Mater. Interfaces

131

100

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A superhydrophobic/hydrophilic asymmetric free-standing film has been created using layer-bylayer assembly technique. Poly(ethylene-imine)-Ag + complex (PEI-Ag + ) at pH 9.0 was assembled with poly(acrylic acid) (PAA) at pH 3.2 on a Teflon substrate to yield a micro-nanostructured surface that can be turned to be superhydrophobic after being coated with a low surface energy compound. Silver nanoparticle loaded free-standing film with one surface being superhydrophobic while the other surface is hydrophilic was then obtained after detachment from the substrate. The superhydrophobicity enabled the upper surface with anti adhesion and self-cleaning properties and the hydrophilic bottom surface can release silver ions as antibiotic agent. The broad-spectrum antimicrobial capability of silver ions released from the bottom surface coupled with superhydrophobic barrier protection of the upper surface may make the free-standing film a new therapy for open wound.

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Section: Introductionmentioning

confidence: 99%

Asymmetric Free-Standing Film with Multifunctional Anti-Bacterial and Self-Cleaning Properties

Shen

Wang

et al. 2012

ACS Appl. Mater. Interfaces

131

100

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“…2). Correspondingly, some of optoelectronic devices using these TFC electrodes exhibit comparable performances to their ITO-based counterparts on rigid glass or flexible plastic substrates [45,70,72,74,75,83,87,88,101,103,[118][119][120]128,129] .…”

Section: Design Of Flexible Electrodesmentioning

confidence: 99%

“…Other flexible substrates include textile [51,52], silk [53,54], paper [55][56][57][58], metalfoil [59,60], shape-memory polymer [61][62][63] and so on. Besides, weavable and fiber-like electrode [17,64]/device configurations [65][66][67][68][69], or even substrate-free free-standing configurations [70] are also demonstrated as effective ways for obtaining flexible devices. This review will focus on the thin-film organic semiconductor devices.…”

Section: Flexible Device Configurationsmentioning

confidence: 99%

“…To date, the TFC electrodes are mostly based on PE-DOT [36,70,74,[82][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97][98], graphene (GF) [73,75,[99][100][101][102][103][104][105][106][107][108][109][110][111][112], carbon nanotubes (CNTs) [73,101,102,[106][107][108][109]113], Ag-based nanowires/grids/films [72,[114][115][116][117][118][119]…”

Section: Design Of Flexible Electrodesmentioning

confidence: 99%

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Thin-film organic semiconductor devices: from flexibility to ultraflexibility

Qian

Zhang

et al. 2016

Sci. China Mater.

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Flexible thin-film organic semiconductor devices have received wide attention due to favorable properties such as light-weight, flexibility, reproducible semiconductor resources, easy tuning of functional properties via molecular tailoring, and low cost large-area solution-procession. Among them, ultraflexible electronics, usually with minimum bending radius of less than 1 mm, are essential for the development of epidermal and bio-implanted electronics, wearable electronics, collapsible and portable electronics, three dimensional (3D) surface compliable electronics, and bionics. This review firstly gives a brief introduction of development from flexible to ultraflexible organic semiconductor electronics, and design of ultraflexible devices, then summarizes the recent advances in ultraflexible thin-film organic semiconductor devices, focusing on organic field effect transistors, organic light-emitting diodes, organic solar cells and organic memory devices.

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“…In this context, Ono and Decher recently prepared free-standing LbL films composed of PAH and PSS using a decomposable sacrificial thin layer consisting of poly(acrylic acid) (PAA) and poly(ethylene glycol) (PEG) [36]. Robust LbL films can be produced by cross-linking polymer chains [37]. However, the ion permeability of such free-standing LbL films has not yet been evaluated, probably due to their fragility.…”

Section: Open Accessmentioning

confidence: 99%

Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold

2013

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Abstract:Layer-by-layer (LbL) films were prepared over an aperture (diameter 1-5 mm) on a glass plate to study ion permeation across free-suspended LbL films. LbL films were prepared by depositing alternating layers of poly(allylamine hydrochloride) (PAH) and poly(styrene sulfonate) (PSS) on the surface of a glass plate with an aperture filled with an alginate gel, followed by dissolution of the alginate gel. PAH-PSS films prepared in this way showed permeability to inorganic salts, depending on the size and charge. Permeability to alkali metal chlorides depended on the Stokes radius of the alkali metal cations. The effect of the type of halide was negligible because of the halides' smaller ionic radii. Permeation of multivalent ions such as Ru(NH 3 ) 6 3+ and [Fe(CN) 6 ] 3− was severely suppressed owing to Donnan exclusion.

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Free-standing film electronics using photo-crosslinking layer-by-layer assembly

Cited by 22 publications

References 25 publications

Asymmetric Free-Standing Film with Multifunctional Anti-Bacterial and Self-Cleaning Properties

Asymmetric Free-Standing Film with Multifunctional Anti-Bacterial and Self-Cleaning Properties

Thin-film organic semiconductor devices: from flexibility to ultraflexibility

Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold

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