A5052787818- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Luminescence and Fluorescent Materials
- Catalytic C–H Functionalization Methods
- Perovskite Materials and Applications
- Asymmetric Hydrogenation and Catalysis
- Organoboron and organosilicon chemistry
- Catalytic Cross-Coupling Reactions
- Organic Light-Emitting Diodes Research
- Photochemistry and Electron Transfer Studies
- Crystallography and molecular interactions
- Conducting polymers and applications
- Porphyrin and Phthalocyanine Chemistry
- Organic Electronics and Photovoltaics
- Carbon dioxide utilization in catalysis
- Photochromic and Fluorescence Chemistry
- Organometallic Complex Synthesis and Catalysis
- Advanced Chemical Physics Studies
- Catalytic Alkyne Reactions
- Metal-Organic Frameworks: Synthesis and Applications
- Synthesis and Catalytic Reactions
- Organic and Molecular Conductors Research
- Hydraulic Fracturing and Reservoir Analysis
- Nanoplatforms for cancer theranostics
- Advanced Photocatalysis Techniques
Shantou University
2017-2025
Ji Hua Laboratory
2021-2025
Children's Hospital of Capital Institute of Pediatrics
2023-2024
Sichuan Agricultural University
2023-2024
Union Hospital
2018-2024
Inner Mongolia University
2024
Fujian Medical University
2018-2024
China Southern Power Grid (China)
2021-2022
Qinghai University
2022
Kaili University
2018-2022
A simple but effective copper-catalyzed borylation of aryl halides, including electron-rich and sterically hindered bromides, with alkoxy diboron reagents occurs under mild conditions (see scheme). Preliminary DFT studies the mechanism suggest that sigma-bond metathesis between a copper-boryl intermediate halide generates boronate product.
In this feature article, we discuss selected recent aspects of metal boryl (M-BR2) chemistry pertaining, in particular, to the role late and post-transition complexes various catalytic processes. The exceptionally strong sigma-donor properties ligands their related nucleophilic behaviour are highlighted.
Abstract Self-assembling natural drug hydrogels formed without structural modification and able to act as carriers are of interest for biomedical applications. A lack knowledge about gels limits there current application. Here, we report on rhein, a herbal product, which is directly self-assembled into through noncovalent interactions. This hydrogel shows excellent stability, sustained release reversible stimuli-responses. The consists three-dimensional nanofiber network that prevents...
Gut microbiota can influence the aging process and may modulate aging-related changes in cognitive function. Trimethylamine-N-oxide (TMAO), a metabolite of intestinal flora, has been shown to be closely associated with cardiovascular disease other diseases. However, relationship between TMAO aging, especially brain not fully elucidated. To explore we analysed plasma levels both humans mice administered exogenous 24-week-old senescence-accelerated prone mouse strain 8 (SAMP8) age-matched...
Lewis base adducts of tetra-alkoxy diboron compounds, in particular bis(pinacolato)diboron (B2 pin2 ), have been proposed as the active source nucleophilic boryl species metal-free borylation reactions. We report isolation and detailed structural characterization (by solid-state solution NMR spectroscopy X-ray crystallography) a series anionic B2 with hard bases, such alkoxides fluoride. The study was extended to alternative acetate, other reagents. B(sp(2) )-B(sp(3) ) exhibit two distinct...
Abstract Polymer-based pure organic room-temperature phosphorescent materials have tremendous advantages in applications owing to their low cost, vast resources, and easy processability. However, designing polymer-based with large Stokes shifts as key requirements biocompatibility environmental-friendly performance is still challenging. By generating charge transfer states the gangplank from singlet excited triplet doped molecules, we find a host molecule (pyrrolidone) that affords guest...
DFT calculations have been carried out to study the insertion reactions of alkenes into Cu−B bond in (NHC)Cu(boryl) complexes (NHC = N-heterocyclic carbene). The nature and relevant regiochemistry examined along with β-hydride eliminations, which are followed by reinsertion alkene Cu−H bond. Hyperconjugation (i.e., π bonding) between Cu−C σ "empty" pz orbital on boron has identified as cause unexpectedly small Cu−C−B angle found experimentally X-ray diffraction α-borylalkyl Cu(I) complexes.
The detailed mechanisms for the borylation of α,β-unsaturated carbonyl compounds, acrolein and methylacrylate, catalyzed by phosphine copper(I) boryl complexes were studied with aid density functional theory calculations. results show that occurs through C═C insertion into Cu−B to give a β-borylalkyl C-bound Cu(I) enolate intermediate. In acrolein, undergoes keto-to-enol isomerization an O-bound intermediate followed σ-bond metathesis diboron reagent. does not occur due inertness ester...
The detailed mechanism for the diboration of aldehydes catalyzed by (NHC)Cu(boryl) complexes (NHC = N-heterocyclic carbene) was studied with aid DFT calculating relevant intermediates and transition states. results show that occurs through aldehyde insertion into Cu-B to give a Cu-O-C(boryl) species followed sigma-bond metathesis diboron reagent. It is "electron-richness", is, nucleophilicity Cu-boryl bond, which gives rise small barrier determines direction insertion. our calculations also...
A facile method by means of MOF materials is used for the first time extraction U(<sc>vi</sc>) ions from seawater, showing a significant efficiency 0.53 mg g<sup>−1</sup>.
A novel MOF material can act as a high-capacity and collectable adsorbent for the removal of Hg(<sc>ii</sc>) from water.
Modified 3,4-ethylenedioxythiophene is employed as the conjugated side chain in polymers, which can significantly depress dark current of polymer photodetectors with little associated decrease photovoltaic properties, thus enhanceing detectivities. This approach be applied to a variety polymers covering photoresponse range from UV NIR.
Creating new electron-deficient unit is highly demanded to develop high-performance polymer donors for non-fullerene organic solar cells (OSCs). Herein, we reported a multifluorinated 4,5,6,7-tetrafluoronaphtho[2,1-b : 3,4-b']dithio-phene (FNT) and its polymers PFNT-F PFNT-Cl. The advantages of multifluorination: (1) it enables the exhibit low-lying HOMO (≈-5.5 eV) wide band gap (≈2.0 eV); (2) short interactions (F⋅⋅⋅H, F⋅⋅⋅F) endow with properties high film crystallinity efficient hole...
Iron-catalyzed asymmetric amination of C(sp3 )-H bonds is appealing for synthetic applications due to the biocompatibility and high earth abundance iron, but examples such reactions are sparse. Herein we describe chiral iron complexes meso- β-substituted-porphyrins that can catalyze intramolecular aryl arylsulfonyl azides afford indolines (29 examples) benzofused cyclic sulfonamides (17 examples), respectively, with up 93 % ee (yield: 99 %) using 410 nm light under mild conditions....
Abstract An anion‐counterion strategy is proposed to construct organic mono‐radical charge‐transfer cocrystals for near‐infrared photothermal conversion and solar‐driven water evaporation. Ionic compounds with halogen anions as the counterions serve electron donors, providing necessary electrons efficient charge transfer unchanged skeleton atoms structures well broad red‐shifted absorption (200–2000 nm) unprecedented efficiency (~90.5 %@808 cocrystals. Based on these cocrystals, an excellent...
Abstract Organic materials with red persistent phosphorescence hold immense promise for biotechnology due to their excellent tissue permeability and high signal‐to‐background ratios. However, inefficient spin‐orbit coupling, triplet susceptibility, narrow energy gapspromoted nonradiative deactivations, pose a formidable obstacle achieving efficient phosphorescence. This study addresses these challenges by introducing xanthone (Xan)‐based host–guest systems. Utilizing polyaromatic...
Abstract Eine einfache und effektive kupferkatalysierte Borylierung von Arylhalogeniden, einschließlich elektronenreicher sterisch gehinderter Arylbromide, mit Alkoxydiborreagentien gelingt unter milden Bedingungen (siehe Schema). DFT‐Rechnungen legen nahe, dass eine σ‐Bindungsmetathese zwischen einer Kupfer‐Boryl‐Zwischenstufe dem Arylhalogenid zum Arylboronat führt. magnified image
DFT calculations have been carried out to study the carboxylation reactions of arylboronate esters with CO2 catalyzed by (NHC)Cu(I) complexes (NHC = N-heterocyclic carbene). The results affirm basic mechanistic proposal that (1) transmetalation aryl group boronic ester Cu(I) metal center occurs first; (2) then inserts into resulting Cu−Ar bond give a carboxylate complex; and (3) displacement base adduct arylboronic substrate completes catalytic cycle affords product ArCOOK. Transmetalation...
DFT calculations have been carried out to study the reactivity difference of B2cat2 and B2pin2 in diboration reaction alkenes catalyzed by carbene-ligated copper(I) complexes. The higher versus this results largely from enhanced electrophilicity/Lewis acidity former, which significantly lowers barrier product-forming transmetalation step. Transmetalation reactions with (NHC)Cu−OMe also investigated, relative barriers are much closer than analogous Cu−R systems.
Recent advances in the power conversion efficiency (PCE) of polymer solar cells (PSCs) have demonstrated their potential for alternative photovoltaic technology. Besides performance, material cost and device fabrication process are among key factors practical applications. Herein, we report a facile molecular engineering approach with 4-methoxy modified thiophene as conjugated side chain donors, which afforded lower highest occupied orbital (HOMO) energy level enhanced interchain...
Near-infrared (NIR) photothermal conversion is of great interest in many fields. Here, a self-assembly organic cocrystal (N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) and pyromellitic dianhydride (PMDA)) with strong absorption NIR range constructed, widespread (200–1500 nm) very high efficiency (87.2%). Essentially, this cocrystal, small HOMO–LUMO gap donor–acceptor pair boosts the ability range. The mixed stacking structure significantly enhances intermolecular interactions as well...
Organic cocrystal exhibits excellent photothermal conversion (PTC), but how the intermolecular interactions of cocrystals regulate PTC is obscure. Here, two isomeric donor molecules (phenanthrene and anthracene) electron-withdrawing (7,7,8,8,8-tetracyanodimethylquinone 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinone dimethane) are self-assembled into four (PTQ, PFQ, ATQ, AFQ). By changing molecular configuration ability acceptor, intrinsic influencing factors interaction on were explored....