A5040740663- Clay minerals and soil interactions
- Phosphorus and nutrient management
- Supramolecular Self-Assembly in Materials
- Organic Electronics and Photovoltaics
- Synthesis and Properties of Aromatic Compounds
- Iron oxide chemistry and applications
- Soil and Unsaturated Flow
- Soil Carbon and Nitrogen Dynamics
- Synthesis and properties of polymers
- Polydiacetylene-based materials and applications
- Organic Light-Emitting Diodes Research
- Graphene research and applications
- Photochromic and Fluorescence Chemistry
- Soil and Water Nutrient Dynamics
- Covalent Organic Framework Applications
- Analytical Chemistry and Chromatography
- Crystallization and Solubility Studies
- Material Dynamics and Properties
- X-ray Diffraction in Crystallography
- Carbon Nanotubes in Composites
- Mine drainage and remediation techniques
- Plant Ecology and Soil Science
- Engineering Diagnostics and Reliability
- Conducting polymers and applications
- Nanopore and Nanochannel Transport Studies
Chengdu University
2025
China University of Petroleum, East China
2024
Nankai University
2022-2024
Merck & Co., Inc., Rahway, NJ, USA (United States)
2023
Yale University
2023
Texas A&M University
2005-2022
Beijing Normal University
2022
State Grid Corporation of China (China)
2021
Tianjin University
2018-2020
Peking University
2020
Fully conjugated ladder polymers (cLPs), in which all the backbone units on polymer main-chain are π-conjugated and fused, have attracted great interest owing to their intriguing properties, remarkable chemical thermal stability, potential suitability as functional organic materials. The synthesis of cLPs can be, general, achieved by two main strategies: single-step ladderization post-polymerization ladderization. Although a variety synthetic methods been developed, chemistry must contend...
Flexible and solution-printable fullerene/TiS<sub>2</sub> organic/inorganic hybrids with excellent thermoelectric properties are demonstrated.
Abstract A standard P adsorption procedure was proposed and the ability of four laboratories to produce consistent results over a wide range soils determined. For this procedure, 0.5 1.0 g soil were shaken in 0.01 mol L −1 CaCl 2 at soil/solution ratio 1:25 containers allowing 50% head space for 24 h 26°C on an end‐over‐end shaker. Initial dissolved inorganic concentrations 0 323 µ (as KH PO 4 or NaH ) used microbial activity inhibited by 20 chloroform. Excellent agreement between obtained...
Florida Agricultural Experiment Station1 Received for publication October 13, 1958 1 Journal Series Paper No. 805 of the Station, Gainesville, Florida.
It is highly desirable to develop compact- and robust-film jumping robots that can withstand severe conditions. Besides, the demands for strong actuation force, large bending curvature in a short response time, good environmental tolerance are significant challenges material design. To address these challenges, this paper reports fabrication of thin-film actuator, which exhibits shrimp-shell architecture, from conjugated ladder polymer (cLP) connected by carbon nanotube (CNT) sheets. The...
The synthesis of a carbazole-derived, well-defined ladder polymer was achieved under thermodynamic control by employing reversible ring-closing olefin metathesis.
The fate of phosphorus in terrestrial ecosystems is concern because it has been identified as a major contributor to eutrophication surface water supplies. In order ascertain the impact inorganic phosphate on quality, chemical speciation, concentration, bio‐availability, and distribution soil‐water system are prerequisites. Environmental regulations land disposal organic wastes also require quantifying partitioning between solid solution phases systems. develop partition coefficient or...
Stimuli‐responsive supramolecular materials are of paramount importance for a broad range applications. It is essential to impart versatility, sustainability, and scalability into these materials. Herein the authors report design synthesis new class thermochromic materials, which can easily be processed from water via reversible sol–gel transition. The composed bis‐bipyridinium acceptor, π‐electron‐rich naphthalene derivative donor, halogen counterions. Long helical nanofibers assembled in...
Stimuli-responsive materials, such as thermochromics, have found mass usage and profitability in manufacturing process control. Imparting charge-transfer-based functional supramolecular materials with tunable thermochromism emerges an ideal strategy to construct optically responsive multifunctional assemblies. Herein, the authors report a new series of thermochromic assembled water. These assemblies are composed bis-bipyridinium-derived acceptor commercially available donors—namely,...
Well-defined, fused-ring aromatic oligomers represent promising candidates for the fundamental understanding and application of advanced carbon-rich materials, though bottom-up synthesis structure-property correlation these compounds remain challenging. In this work, an efficient synthetic route was employed to construct extended benzo[k]tetraphene-derived with up 13 fused rings. The molecular electronic structures were clearly elucidated. Precise sizes crystallization dynamics established,...
Active conformational control is realized in a conjugated system using intramolecular hydrogen bonds to achieve tailored molecular, supramolecular, and solid-state properties. The bonding functionalities are fused the backbone precisely preorganized enforce fully coplanar conformation of π-system, leading short π–π stacking distances, controllable molecular self-assembly, growth one-dimensional nano-/microfibers. This investigation demonstrates efficiency significance an noncovalent approach...
Abstract Soils were extracted successively with 1 N NH 4 Cl, 0.5 F, 0.1 NaOH and H 2 SO solutions to represent water‐soluble, aluminum, iron calcium phosphates, respectively. Over 80% of the added phosphorus was retained by soils as aluminum phosphates. Less than 10% in water‐soluble phosphate forms. The balance not accounted for may have been forms other those mentioned. ratio phosphates increased rates applied three soils. This more evident Red Bay fine sandy loam Norfolk loamy sand Leon...
Selective desorption of (6,5) single-wall carbon nanotubes from hydrogels only occurs at specific co-surfactant ratios. High-purity fractions are obtained this ratio even with long elution times and different total concentrations. These results suggest that each (n,m) type forms a thermodynamically-stable surfactant structure in the solution, enabling high-fidelity separations single column.
Abstract Pertaining to motion of a rigid particle in flow, several distinct “centers” the body can be identified, including geometric center (centroid), mass, hydrodynamic center, and diffusion. In this work, we elucidate relevance these centers Brownian Starting from microscopic stochastic equations motions, systematically derive coarse-grained Fokker-Planck that govern evolution probability distribution function (PDF) phase space configurational space. For consistency with equilibrium...
Latent H-bonds in conjugated statistical copolymers rendered semiconducting thin films resistant to solvent immersion.
Abstract A buffer method to take into consideration both the acidity and buffering property of individual acid soils was investigated. The composed tris, imidazol, chromate, pyridine in a 0.2 M CaCl 2 solution. It prepared so that each addition 0.1 meq strong 50 ml this would reduce pH by unit within range 8.0 5.4. Two buffers same composition, one adjusted 7.00 other 6.00, were added two separate soil samples. After shaking for 1 hour determined. depression measured neutralized equilibrium...
Magnetic carbon nanotube aerogels with a repeated aerogel–sol–hydrogel–aerogel transition have been acquired by the special drying of gel-precursors made via assembling individual nanotubes dendritic poly(amido amine) molecules in presence Fe3O4 nanoparticles, which has inspired us to synthesize renewable 3D porosints composed organic, inorganic and their hybrid building blocks.
Abstract The quantities of municipal wastes are so large that croplands have been considered as possible sinks for their disposal. In this study amounts liquid‐digested sludge were applied to the soil. accumulation and distribution its constituents in soil profile studied. contained 2.6 3.0% dry matter very little Cd other toxic metals. Liquid equivalent 0, 87, 174, 241, 288, 335 metric tons/ha was each three Paleudults (Orangeburg fine sand loam [fsl], Lucy fsl, Troup fsl) over a 6‐year...
A highly efficient and feasible "condensation followed by annulation" synthetic approach was developed to afford a subset of 9-ring-fused quinacridone derivatives on 10 g scale. Despite the amenable intermolecular hydrogen-bonding ability these rigid molecules, good solubility in common organic solvents solution processability into uniformed thin films were achieved. Integrated advantages synthesis properties make compounds ideal building blocks for high-performance dyes optoelectronic materials.
Abstract Macroscopic enantiomerically pure helical supramolecular fibers are bottom‐up assembled in aqueous media from a chiral π‐electron donor template and an achiral acceptor. The helices can be to the sub‐millimeter scale with controlled handedness. These dynamic architectures allow for quantitative exchange of analogues. During this process, memory effect was observed, affording composed entirely components.
Polyvinyl polymers bearing pendant hole transport functionalities have been extensively explored for solution-processed layer (HTL) technologies, yet there are only rare examples of high anisotropic packing the HT moieties these into substrate-parallel orientations within HTL films. For small molecules, alignment is a well-established approach to improve overall device performance. To address longstanding challenge extension from vapor-deposited molecules solution-processable polymer...