Interfacial self-assembly of nanoporous C<sub>60</sub> thin films

Tisserant, Jean‐Nicolas; Reissner, Patrick A.; Jenatsch, Sandra; Beyer, Hannes; Hany, Roland; Stemmer, Andreas

doi:10.1039/c6ra02720b

Cited by 4 publications

(12 citation statements)

References 48 publications

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“…In addition, since fullerols have better solubility in water than brominated fullerene, nanotechnology can tune and control the fundamental physicochemical properties of fullerenes derivatives by ordering them into molecular thin films [38][39][40][41][42][43][44][45][46][47] fabricating either hydrophilic or hydrophobic nanocoatings. The possibility to control the size and the orientation of fullerene moieties in 2D arrangements can lead to new functional low-dimensional materials with interesting and promising properties for controllable wetting applications [26] including corrosion resistant [48], smart textiles [49], self-cleaning [50] and directional wetting [51] surfaces as well as for developing lab-on-a-chip (LOC) devices [52] and biosensors [26].…”

Section: Introductionmentioning

confidence: 99%

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Kouloumpis

Vourdas²,

Zygouri

et al. 2018

Journal of Colloid and Interface Science

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The scientific and technological potential of graphene's includes the development of light, open 3D hybrid structures with high surface area, tunable pore size and aromatic functionalities. Towards this aim, we describe a scalable and low-cost bottom-up approach that combines self-assembly and Langmuir-Schaefer deposition for the production of fullerene-intercalated graphene oxide hybrids. This method uses graphene oxide (GO) nanosheets as template for the attachment of two types of fullerene derivatives (bromo-fullerenes, CBr and fullerols, C(OH)) in a bi-dimensional arrangement, allowing a layer-by-layer growth with control at nanoscale. Our film preparation approach relies on a bottom-up process that includes the formation of a hybrid organo-graphene Langmuir film, which is transferred onto a substrate and then brought in contact with C(OH) molecules in solution to induce self-assembly. In the case of grafting CBr molecules into graphene a further modification of the GO platelets was performed by bringing the surface of the transferred GO Langmuir film in contact with a second amino surfactant solution. Repeating these deposition cycles, pillared structures were fabricated in thin films form. These fullerene-based hybrid thin films were characterized by Raman and X-ray photoelectron (XPS) spectroscopies, X-ray diffraction (XRD), Atomic Force Microscopy (AFM) and contact angle measurements.

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Section: Introductionmentioning

confidence: 99%

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Kouloumpis

Vourdas²,

Zygouri

et al. 2018

Journal of Colloid and Interface Science

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“…Nanoporous TIPS-Pn thin films were formed by adapting an interfacial growth method published elsewhere. [15] Briefly, TIPS-Pn was dissolved in chloroform at concentrations varying from 0.1 to 10 g L −1 . One hundred and fifty microliters of the solution were deposited on the meniscus formed by DI water in a teflon beaker (ø = 2.5 cm).…”

Section: Methodsmentioning

confidence: 99%

“…Nanoporous TIPS‐Pn thin films were formed by adapting an interfacial growth method published elsewhere . Briefly, TIPS‐Pn was dissolved in chloroform at concentrations varying from 0.1 to 10 g L −1 .…”

Section: Methodsmentioning

confidence: 99%

“…[7,14] These templates require cross-linking prior to pattern transfer to the OSC using chlorinated solvents, [7] making their specific chemical functionalization toward gas sensing challenging. In the approach that we follow here, nanoporous films of 6,13-bis(triisopropylsilyle thynyl)pentacene (TIPS-Pn) were interfacially self-assembled on a water-air interface, [15,16] allowing facile deposition on a sensitive 4-tert-butylcalix [6]arene gate dielectric. Calixarenes are cyclic molecules allowing specific supramolecular interactions through molecular engineering of the functional moieties decorating the rims of the chalice.…”

Section: Doi: 101002/aelm201800362mentioning

confidence: 99%

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Nanoporous Organic Field‐Effect Transistors Employing a Calixarene Dielectric for Sub‐ppb Gas Sensing

Tisserant

Beck

Barf

et al. 2018

Adv Elect Materials

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The increase of exposure to volatile organic compounds in general, and endocrine disruptors in particular, through daily healthcare consumer goods urgently calls for the development and commercialization of cheap and easy‐to‐use sensors to detect these molecules in air. Organic semiconductors (OSCs) promise the mass fabrication of cheap and flexible sensors, under the condition that the fabrication of functional thin films having the right morphology can be fully harnessed. Nanoporous morphologies are interesting in the field of gas sensing because they facilitate the diffusion of gas molecules to the active volume of organic field‐effect transistors (OFETs), at the vicinity of the gate dielectric. Nanoporous films of OSCs are, however, challenging to produce and to transfer into working sensors. Usage of nanoporous OSC films deposited on a sensitive 4‐tert‐butylcalix[6]arene gate dielectric as the active layer of an OFET‐based gas sensor is proposed here. The semiconducting molecules are self‐assembled into nanoporous films at the interface between air and water, allowing their transfer to practically any gas‐sensitive dielectric substrate. The OFET built on this film stack is used here to sense the presence of methyl 4‐hydroxybenzoate (methylparaben) in air at concentrations below 1 ppb.

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“…3 The bottleneck to the direct use of fullerene nanoparticles to form nanoporous films is the reproducible production of monodisperse nanoparticles with diameters below 100 nm. 3,6,15 We have developed a complementary approach based on the spontaneous formation of nanoporous films of fullerenes by interfacial self-assembly where particles of fullerene with a diameter below 100 nm aggregate to form percolating 2D superstructures. 6 Here we observe in situ the growth of such 2D thin films of fullerenes on different interfacial geometries and present conditions to obtain mainly morphological features in the range between 5 and 20 nm.…”

Section: ■ Introductionmentioning

confidence: 99%

Visualizing Local Morphology and Conductivity Switching in Interface-Assembled Nanoporous C₆₀ Thin Films

Tisserant

Wagner

Reissner

et al. 2017

ACS Appl. Mater. Interfaces

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Carbon materials promise a revolution in optoelectronics, medical applications, and sensing provided that their morphology can be controlled down to the nanometer scale. Nanoporous materials are particularly appealing as they offer a drastically enlarged interfacial area compared to the corresponding planar materials. Entire fields such as organic solar cells, catalysis, or sensing may profit from an enlarged interface and facilitated molecular interaction between a carbon material and the environment. Nanoporous fullerene thin films obtained by the deposition of suspended nanoclusters of fullerene were already reported but suffered from the limitation of the size of these particles to over 100 nm. We study here a complementary method based on interfacial self-assembly forcing C clusters to spontaneously form 2D percolating monolayers with most morphological features in the 5-20 nm range. Analysis of these films by means of electron microscopy and scanning probe microscopy proved their morphology to be a nanocomposite of crystalline beads embedded in an amorphous matrix of fullerenes. When contacted between two gold electrodes, these films show an intrinsic conductivity switching behavior. Their electrical conductivity could be reversibly switched on by applying a threshold electrical current and switched off by exposure to oxygen. Interestingly, the on-state exhibits an astonishing conductivity of over 10 S/m. Kelvin probe force microscopy (KFM) was used to observe local changes in the distribution of electrical potential upon switching, on the relevant length scale of a few nanometers.

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Interfacial self-assembly of nanoporous C₆₀ thin films

Abstract: Self-assembled stabilized nanoporous C60 films offer an enhanced active interfacial area.

Cited by 4 publications

References 48 publications

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Nanoporous Organic Field‐Effect Transistors Employing a Calixarene Dielectric for Sub‐ppb Gas Sensing

Visualizing Local Morphology and Conductivity Switching in Interface-Assembled Nanoporous C₆₀ Thin Films

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Interfacial self-assembly of nanoporous C60 thin films

Abstract: Self-assembled stabilized nanoporous C60 films offer an enhanced active interfacial area.

Cited by 4 publications

References 48 publications

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Controlled deposition of fullerene derivatives within a graphene template by means of a modified Langmuir-Schaefer method

Nanoporous Organic Field‐Effect Transistors Employing a Calixarene Dielectric for Sub‐ppb Gas Sensing

Visualizing Local Morphology and Conductivity Switching in Interface-Assembled Nanoporous C60 Thin Films

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Product

Resources

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Interfacial self-assembly of nanoporous C₆₀ thin films

Visualizing Local Morphology and Conductivity Switching in Interface-Assembled Nanoporous C₆₀ Thin Films