Luminescent polymers are generally constructed through polymerization of luminescent moieties. Polymerization itself, however, is mainly used for constructing polymer main chain, and the importance on luminescence has yet to be explored. Here, we demonstrate a polymerization-induced emission strategy producing by introducing Barbier reaction hyperbranching polymerization, which allows properties easily tuned from traditional type an aggregation-induced simply adjusting monomer structure...

Single-component metal halides with white light emission are highly attractive for solid-state lighting applications, but it is still challenging to develop all-inorganic lead-free high white-light efficiency. Herein, by rationally introducing silver (Ag) into zero-dimensional (0D) Cs3 Cu2 Br5 as new structural building unit, a one-dimensional (1D) bimetallic halide Cs6 Cu3 AgBr10 designed that emits strong warm-white an impressive photoluminescence quantum yield (PLQY) of 94.5% and...

Abstract Most of current metal halide materials, including all inorganic and organic–inorganic hybrids, are crystalline materials with poor workability plasticity that limit their application scope. Here, we develop a novel class termed polymeric halides (PMHs) through introducing polycations into antimony‐based as A‐site cations. A series PMHs orange‐yellow broadband emission large Stokes shift originating from self‐trapped excitons successfully prepared, which meanwhile exhibit the...

Zero-dimensional metal halides have emerged a versatile platform for the development of light-emitting materials, but achieving tunable or even multicolor emission from material containing single type has proven highly challenging. Here, we leverage “structural tolerance” recently-developed polymeric to integrate two distinct coordination units into material, thereby optical properties in single-phase halides. By manipulating steric hindrance polycations, facilely adjustable green, red...

Electron-deficient borinic acid monomers and corresponding polymers were synthesized with different substituents via a one-pot reaction of Grignard reagents trimethoxyborane reversible addition–fragmentation chain transfer polymerization, respectively. Further investigations substituent effects (PBAs) carried out, indicating that the thermoresponsive properties PBAs benefit from increase steric hindrance PBA substituent, while binding affinity Alizarin Red S, 8-hydroxyquinoline (HQ),...

Carbon-carbon bond formation through polarity reversal ketyl radical anion coupling of carbonyls has inspired new reaction modes to this cornerstone carbonyl group and played significant roles in organic chemistry. The introduction resplendent strategy into polymer chemistry will inspire polymerization mode with unpredicted discoveries. Here we show the successful approach realize self-condensing polymerization-induced emission. In approach, it exhibits intriguing reversed polymerizability,...

Abstract Most of current metal halide materials, including all inorganic and organic–inorganic hybrids, are crystalline materials with poor workability plasticity that limit their application scope. Here, we develop a novel class termed polymeric halides (PMHs) through introducing polycations into antimony‐based as A‐site cations. A series PMHs orange‐yellow broadband emission large Stokes shift originating from self‐trapped excitons successfully prepared, which meanwhile exhibit the...

Monofunctional carbonyls are readily available from fossil fuels and biomass on earth. They cornerstones of organic chemistry but rarely used as monomers for polymer materials. Here, we demonstrate a versatile single-atom polymerization (SAP) method using monofunctional building blocks, where bifunctionalization is critical. Through SAP, series alcohol-containing polymers, which difficult to synthesize by other traditional methodologies, prepared. These polymers exhibit structure-specific...

A simplified one-pot and less harmful method has been introduced for the synthesis of borinic acid monomer. The corresponding polymer (PBA) prepared by reversible addition-fragmentation chain transfer polymerization. Property investigations confirm characteristics PBA as a new type "smart material" in field thermo-responsive polymer. potential application enzymatic biofuel cell illustrated with wide open circuit 0.92 V.

The authors systematically studied transportation technology with pour point depressant and wax deposition in an industrial crude oil pipeline. Experiment results manifest that beneficiated acquires obvious modification effect the reheating temperature of intermediate heat stations should be above 55°C to avoid deterioration. Heating schemes are made lower heating wider output range. Moreover, applicable model is established predict distribution along pipeline under various operating...

In order to machine the tungsten alloy with high efficiency, low damage and precision, laser ablation texture technology precision grinding were combined carry out experiments of texture-assisted experiments. The advantages investigated by comparing surface morphology, force roughness between ordinary ablative grinding. results demonstrate that morphology was poor, relatively large. processed improved, decreased 0.023 µm–0.204 µm, normal 49.91–59.46% tangent 44.11–58.49%. Meantime, for area...

Attributed to dynamic characteristics of covalent boroxine, well-controlled polymerization tri-vinyl monomer and molecular design penta-responsive polymer with only one functional moiety are achieved.

Ultrafiltration (UF) membranes have found great application in sewage purification and desalination due to their high permeation flux rejection rate for contaminants under low-pressure conditions, but the antifouling ability of UF needs be improved. Tetrakis (4-carboxyphenyl) porphyrin (TCPP) has good hydrophilicity, it is protonated strongly acidic conditions then forms strong hydrogen bonds with N, O S, so that TCPP would well anchored membrane. In this work, NaHCO3 was used dissolve TMC...

Well testing method has historically been the main source of formation evaluation in oilfields. This work demonstrates well analysis for crossflow triple-layer reservoirs by polymer flooding, and a model is proposed considering mechanical degradation, dispersion, convection, shear-thinning solutions. The type curves, having five segments with different flow regime, are developed based on this model, parameter sensitivity analyzed. typical characteristic existence two 'concaves' distinguished...

Abstract Isothermal simulation experiments on natural gas-CaSO4-H2O system and gas-MgSO4-H2O were conducted at 450–570°C. Properties of reaction products analyzed by microcoulometry, gas-chromatography, Fourier transform-infrared spectrometry, X-ray diffraction methods. Based the experiments, composition products, geochemical characteristics, thermodynamics compared with those system. It was found that H2S, CO2, carbon common two thermochemical sulfate reduction systems. In process, CaSO4...

Horizontal well technology has been widely used in developing oil fields. Very commonly, these wells are hydraulically fractured to improve productivity low permeability reservoirs. The of a multifractured horizontal is mainly affected by reservoir properties and fracture parameters. A simple accurate method for evaluating optimizing this type not available highly desirable engineers. authors analyzed the equipressure contour, velocity vector distributions, influence factors such as ratio...

Abstract Block copolymer (BCP) self‐assembly is a versatile technique in the preparation of polymeric aggregates with varieties morphologies. However, its morphology library limited. Here, discovery pincushion tubules reported for first time, via BCP poly(4‐vinylpyridine)‐ b ‐polystyrene (P4VP‐ ‐PS) very high molecular weight (500 kDa) and asymmetry (2 mol% P4VP). The investigation confirms importance core‐forming block length on control self‐assemblies, especially respect to tubular...

Abstract Thermal simulation experiments on thermochemical sulfate reduction system of natural gas and magnesium sulphate were carried out using an autoclave in the presence water. The products characterized by some advanced analytical methods. Thermodynamics reaction kinetics processes had been investigated basis experimental data. results showed that with could proceed at 425°C–525°C to produce oxide, carbon, hydrogen sulfide, carbon dioxide as main products. reactions are thermochemically...