The model of variable range hopping conductivity predicts a crossover between Mott and Efros-Shklovskii as function temperature density states. This is observed using monodispersed CdSe colloidal quantum dot 3D solids where the states at Fermi level varied by electrochemistry. At low states, both below lowest state (<0.4e−/dot) in gap first second (2e−/dot), dependence shows 1/4 exponent hopping. other fillings up to 6e−/dot, 1/2 non-Ohmic also found be explained quantitatively model.

Droplet-based microreactors often uncover fascinating phenomena and exhibit diverse functionality, which make them applicable in various fields. Liquid marbles (LMs) are non-wetting droplets coated with particles, these features highlight their potential as microreactors. However, sophisticated experimental designs typically hindered because it is difficult to obtain sufficient substance mixing miniature, damage-prone, self-supporting liquid containers. Here, we demonstrate that subjecting...

Using electrochemical charge injection, the fluorescence lifetimes of negatively charged core/shell CdTe/CdSe QDs are measured as a function core size and shell thickness. It is found that ensemble negative trion reach maximum (∼4.5 ns) for an intermediate This leads to smallest particles nm) with brightest date. Single dot measurements show suppresses blinking can be bright exciton at room temperature. In contrast, biexciton remain short exhibit only monotonous increase thickness, showing...

Abstract It was found that mesoporous graphite carbon nitride (mpg-C3N4) prepared using melamine as the precursor and ammonium chloride bubble template, has good photocatalytic activity under visible light irradiation. In order to improve performance of mpg-C3N4, it combined with metal-organic framework ZIF-8. Taking tetracycline hydrochloride (TC) solution a model pollutant, composites studied select optimal composite ratio pH value. The initial concentration hydrogen peroxide active...

Open fluidics, allowing liquid in a flow channel to interact with the external environment, is revolutionary concept. However, fabricating highly stable open fluidic device of arbitrary complexity, while maintaining reconfigurability, still challenge. This achieved by use patterned substrate and liquids that are covered functional, readily available hydrophobic particles, providing great flexibility construction structures. Decorated coating modified carbon nanotubes (CNTs) encapsulate...

Thermal deflection spectroscopy allows to measure very small absorption and uncovers tails extending well below the bulk bandgap energy for CdSe quantum dots films after ligand exchange by sulfide. In this monodispersed system, redshift, broadening, cannot be solely attributed electronic coupling between dots. Instead, mixing of hole states from dot surface is proposed dominate changes interband spectra at edge.

Two novel helical compounds based on polyoxovanadates, [Co(H2O)2V2O6] (1) and [Co(bimb)V2O6] (2) (bimb =1,3-bis(1-imidazoly)benzene), have been synthesized under identical hydrothermal conditions, providing two structurally different motifs due to introduction of a V-shaped bimb ligand in 2. Compound 1 possesses pair entanglement double helixes 3D inorganic framework, whereas compound 2 shows single entangled helix inorganic–organic network owing the influences steric hindrance ligands as...

Millifluidics, the manipulation of liquid flow in millimeter-sized channels, has been a revolutionary concept chemical processing and engineering. The solid channels that contain liquids, though, are not flexible their design modification, prevent contact with external environment. All-liquid constructs, on other hand, while open, imbedded Here, we provide route to circumvent these limitations by encasing liquids hydrophobic powder air jams surface, containing isolating flowing fluids,...

Abstract The development of 3D cell culturing toward labor saving and versatility is highly desired. Here, we propose a platform consisting multiwell plate liquid marbles (LMs). inner walls the are covered with particle‐detachable superhydrophobic coatings that serve as both substrates particle sources for LM production. A produced LM, which serves minireactor culture, features monolayer nanoparticulate shell naked‐droplet‐like transparency. LM‐in‐plate provides double‐superhydrophobic...

Abstract Photodynamic therapy (PDT) has emerged as a promising non‐invasive approach for cancer treatment. Enhancing its efficacy and understanding absorption‐induced attenuation are significant while the solutions limited, particularly latter. In this study, rod‐shaped liquid plasticine (LP), comprised of tumor cell solution encased by nanoparticle monolayer, is used to serve powerful minireactor addressing these issues. The channel structure, openness, cuttability LP reactor exploited...

Abstract The potential of an aquatic plant, Hydrilla verticillata, to remove two basic dyes, methylene blue and blue, from aqueous solutions was assessed under various experimental conditions. Results showed that dried able the dyes efficiently rapidly. Its breakthrough time flow conditions could be predicted using Hutchin's bed depth‐service (BDST) model. As is readily available, it represent a cheap source biosorbent for dyes.

By choosing asymmetric L ligands (L = 1-(imidazol-1-yl)-4-(1,2,4-triazol-1-ylmethyl)benzene), Cu2+/Co2+ cations and Keggin clusters as starting materials, two new POM-based zipper-like compounds, {Cu(L)4[HPMo12O40]}·4H2O (1) {[Co(L)4][HPMo8VV4O40(VIVO)2]} (2), have been hydrothermally synthesized characterized by elemental analyses, single-crystal X-ray diffraction, XPS, powder IR spectroscopy, TG analyses. A structural feature of 1 2 is that there exists a 1D + → 3D interdigitated...

Crack-free PDMS-SiO2-TiO2 composite as photocatalyst was prepared for degrading dyes by using thin-film fixed bed reactor. The hydrophobic surface of the loaded with could be considered an extractant organic pollutants. effect different supports including pumice stone, medicinal and fiberglass photocatalytic efficiency were compared. Under same condition, it found that degradation best when on stone rather than or fiberglass. Furthermore, used support composite, hardly decreased after five cycles.

Pd/TiO₂–CeO₂ is proposed as a promising catalyst for low-temperature oxidation of CO with 100 °C lower light-off temperature than Pd/Al₂O₃.