Organic solvent nanofiltration (OSN) membranes with ultrathin separation layers down to 35 nm in thickness fabricated from a polymer of intrinsic microporosity (PIM‐1) are presented. These exhibit exceptionally fast permeation n‐heptane rejection for hexaphenylbenzene about 90%. A thick PIM‐1 membrane possesses Young's modulus 222 MPa, and shows excellent stability under hydraulic pressures up 15 bar OSN. maximum permeance 18 Lm −2 h −1 is achieved 140 membrane, which two orders magnitude...

This review highlights the opportunities and challenges in stability of organic solar cells arising from emergence non-fullerene acceptors.

We report a general light processing strategy for organic solar cells (OSC) that exploits the propensity of fullerene derivative PC60BM to photo-oligomerize, which is capable both stabilizing polymer:PC60BM active layer morphology and enhancing device stability under thermal annealing. The observations hold blends with an array benchmark donor polymer systems, including P3HT, DPP-TT-T, PTB7, PCDTBT. kinetics thermally induced crystallization within blend films are investigated as function...

Abstract Morphological stability is a key requirement for outdoor operation of organic solar cells. We demonstrate that morphological and lifetime polymer/fullerene based cells under thermal stress depend strongly on the substrate interface which active layer deposited. In particular, we find benchmark PCDTBT/PCBM modest substantially increased in inverted employing ZnO compared to conventional devices PEDOT:PSS substrate. This improved observed correlate with PCBM nucleation at 50 nm scale,...

We investigate the impact of fullerene C60 on thermal properties and glass formation polystyrene (PS) by differential scanning calorimetry (DSC) dielectric spectroscopy (DS), for concentrations up to 30% mass fraction. The miscibility dispersibility thresholds PS/C60 nanocomposites are first estimated a combination microscopy, small angle neutron scattering (SANS) wide-angle X-ray (WAXS) experiments, these were found be ≃1 mass% ≃4 C60, respectively. addition increases glass-transition...

Abstract Nanoacoustic fields are a promising method for particle actuation at the nanoscale, though THz frequencies typically required to create nanoscale wavelengths. In this work, generation of robust force gradients is demonstrated using MHz driving via acoustic‐structure interactions. A structured elastic layer interface between microfluidic channel and traveling surface acoustic wave (SAW) device results in submicron traps, each which can trap individual particles. The acoustically...

Three-dimensional (3D) chemical information was obtained by means of a combination two-dimensional attenuated total reflection Fourier transform infrared (ATR-FT-IR) imaging with focal plane array detector and variable angle depth profiling. Since the penetration evanescent wave in ATR spectroscopy is not limited diffraction, it possible to resolve thin sandwiched polymer layers nondestructively within stack layers. Chemical images were from different thickness laminate moving custom-made...

The stability and association of polymer–fullerene films upon thermal annealing depends strongly on exposure to light, even at ambient conditions. As a result, dewetting nanocomposite can be prevented the characteristic lengthscales phase separated morphologies finely tuned. Coupling photopatterning with either self-organization process provides powerful route for directed assembly fullerene-based nanocomposites into functional "circuits".

Separation of low viscous oil from water has attracted immense attention in recent times due to the ever‐increasing amount oily industrial wastewater discharge and frequent spill accidents. Hence, there is a persistent demand for fabrication robust oil–water separation membranes. Herein, membranes are successfully fabricated by direct electrospinning poly(vinylidene fluoride‐ co ‐hexafluoropropylene) fluorinated polyhedral oligomeric silsesquioxane composite mixture. These hybrid exhibit...

Thin supported polystyrene-C(60) fullerene mixtures annealed above their glass transition temperature develop spinodal surface undulations which depend on film thickness h(20-500 nm), polymer molecular mass M(w), temperature, and time t. The dominant wavelength λ ∼1-10 μm scales linearly with h coarsening kinetics follow λ∼t{α}, 0< α(h) < 1/3; the morphology eventually pins at long times. This excitation contrasts dewetting suppression stability observed in low -M(w) polymers results from...

We study the mechanism and kinetics of fullerene C60 association in model homopolymer thin films upon isothermal annealing. Uniform polystyrene (PS) loaded with 0–5% mass fraction, on both sides miscibility threshold, are annealed monitored over time. A transition from heterogeneous, sparse, nucleation to a percolated spinodal morphology is observed increasing loading Fullerene followed by crystallization, which quantified Avrami two dimensions. Key regimes process identified as nucleation,...

Ultrathin through‐hole membranes with spatially ordered and monodisperse nanopores are attracting growing interests in academic studies industrial applications. Herein, by adapting capillary driven mold‐based patterning techniques, the authors present, a facile, benchtop method for fabrication of such without elaborate post‐etching steps costly instrumentations, which remain intrinsic limitations existing methods. The theory experiment on imprint depth timescale good agreement, thus...

Controlling polymer film solubility is of fundamental and practical interest typically achieved by synthetically modifying the structure to insert reactive groups. Here, we demonstrate that addition fullerenes or its derivatives (C60 phenyl-C61-butyric acid methyl ester, PCBM) polymers, followed ultraviolet (UV) illumination can change solubility. Contrary most synthetic which dissolve in organic solvents but not water, fullerene-doped films (such as polystyrene) water yet remain stable...

OPV film deposition by wire-bar coating and light soaking result in polymer:fullerene solar cells with synergetically enhanced thermal stability.

Many technologies are increasingly dependent on the development of membranes with highly precise pore size and spatial order. While mold-based lithographic techniques adopted for fabrication such ordered porous membranes, their transition toward large-scale remains challenging because manual laborious process requirements. To facilitate from batch to continuous membrane production, a novel roll-to-roll (R2R) was designed based an established capillary-driven molding technique. Establishing...

We report on the stability and cluster formation in C60 fullerene-polystyrene mixtures, using a combination of small angle neutron scattering, optical atomic force microscopy. Bulk nanocomposites are found to be stable for loadings up 1-2% mass fraction PS Mw = 270 kg/mol approximately 160°C. At larger fullerene concentration, coherent scattering intensity grows with time, within 10s min, is well described by an asymptotic relationship rate compatible Arrhenius temperature dependence. The...

We report a small angle neutron scattering study of the thermodynamics polymer mixture in presence nanoparticles, both equilibrium and during phase separation. Neutron cloud point measurements random approximation (RPA) analysis demonstrate that 1−2 mass % C60 fullerenes destabilizes highly interacting poly(tetramethyl bisphenol A polycarbonate) deuterated polystyrene (TMPC/PSd). unequivocally corroborate these findings with time-resolved temperature jump experiments that, identical...

Transient electronics is an emerging class of that has attracted a lot attention because its potential as environmental-friendly alternative to the existing end-of-life product disposal or treatments. However, controlled degradation transient under environmentally benign conditions remains challenge. In this work, tunable including passive resistor devices and active memory was realized by photodegradable thin polymer films comprising fullerene derivatives, [6,6]-phenyl-C61-butyric acid...

Effective separation of hexaphenylbenzene from n-heptane is demonstrated on page 4729 by A. G. Livingston and co-workers. Ultrathin free-standing polymer films with intrinsic microporosity (PIM-1) are precisely fabricated porous substrates. The organic solvent nanofiltration performance exceptionally fast permeation through PIM-1 layers down to 35 nm in thickness presented. Membranes show highly non-monotonic film ageing resistance.

The stability and association of polymer–fullerene films upon thermal annealing depends strongly on exposure to light, even at ambient conditions, as reported by João T. Cabral co-workers page 985. As a result, the coupling self-assembly in polymer nanocomposites photo-transformation provides an extremely promising route for patterning (wetting/dewetting), morphology characteristic dimensions thin film composites.

In article number 2000462, David J. Collins, Ye Ai, and co-workers demonstrate the generation of robust nanoscale force gradients from interactions between MHz acoustic waves nanocavities, which enables massively multiplexed sub-micron particle trapping within these nanocavities at single-particle level.

To achieve the ambitious targets set out in Paris Agreement, technological innovations that will advance direct air capture technology are needed. The grand challenge to increase total amount of CO2 directly from ambient may be achieved by a platform can implemented widely urban spaces. In this work, we present pioneering passive and distributed (DAC) approach leverages on highly adaptable form factor carbon composite (C3) film. Through synergy between flexible surface texture engineering C3...