A5050696290- Metamaterials and Metasurfaces Applications
- Catalytic C–H Functionalization Methods
- Acoustic Wave Phenomena Research
- Catalytic Cross-Coupling Reactions
- Catalytic Alkyne Reactions
- Orbital Angular Momentum in Optics
- Perovskite Materials and Applications
- Semiconductor materials and devices
- Underwater Acoustics Research
- Plasmonic and Surface Plasmon Research
- Oxidative Organic Chemistry Reactions
- Ferroelectric and Piezoelectric Materials
- Advanced Antenna and Metasurface Technologies
- Speech and Audio Processing
- Organoboron and organosilicon chemistry
- Luminescence Properties of Advanced Materials
- Quantum Dots Synthesis And Properties
- Crystallization and Solubility Studies
- Synthesis and Catalytic Reactions
- Multiferroics and related materials
- Electromagnetic wave absorption materials
- Synthetic Organic Chemistry Methods
- Acoustic Wave Resonator Technologies
- Silicon Nanostructures and Photoluminescence
- Marine and coastal ecosystems
Nanjing University
2016-2025
Collaborative Innovation Center of Advanced Microstructures
2015-2025
Institute of Acoustics
2020-2025
Qingdao University
2024
First Affiliated Hospital of Bengbu Medical College
2024
Huanghuai University
2019-2023
Guangdong University of Technology
2023
PLA Information Engineering University
2023
Shanghai University of Engineering Science
2021
Zhejiang Shuren University
2021
Noble metals such as gold and silver are conventionally used the primary plasmonic building blocks of optical metamaterials. Making subwavelength-scale structural elements from these not only seriously limits performance a device due to high absorption, it also substantially complicates manufacturing process nearly all metamaterial devices in wavelength range. As an alternative noble metals, we propose use heavily doped oxide semiconductors that offer both functional fabrication advantages...
Intermolecular annulation reactions of 1-aryl-2-naphthols with internal alkynes proceed efficiently in the presence a Ru catalyst and Cu oxidant to generate spirocyclic compounds by sequential cleavage C(sp2)-H bond, migratory insertion alkyne, dearomatization naphthyl ring. Various molecules bearing an all-carbon quaternary stereocenter could be obtained this novel method good yields excellent regioselectivity, current process tolerates variety synthetically important functional groups.
Abstract A nickel/N‐heterocyclic carbene catalytic system has been established for decarbonylative borylation of amides with B 2 nep by C−N bond activation. This transformation shows good functional‐group compatibility and can serve as a powerful synthetic tool late‐stage amide groups in complex compounds. More importantly, key intermediate, the structure an acyl nickel was first confirmed X‐ray analysis. Furthermore, process also observed. These findings confirm mechanistic features...
Perovskite and chalcogenide quantum dots (QDs) are important nano semiconductors. It has been a challenge to synthesize heterostructural QDs combining perovskite with tailorable photoelectronic properties. In this report, CsPbX3-PbS (X = Cl, Br, I) were successfully synthesized via room temperature in situ transformation route. The show tunable dual emission feature the visible near-infrared (NIR) photoluminescence (PL) corresponding CsPbX3 PbS, respectively. Typically, formation evolution...
Weyl points—topological monopoles of quantized Berry flux—are predicted to spread exceptional rings in the presence non-Hermiticity. Here, we use a one-dimensional Aubry-Andre-Harper model construct semimetal three-dimensional parameter space comprising one reciprocal dimension and two synthetic dimensions. The inclusion non-Hermiticity form gain loss produces ring (SWER). topology SWER is characterized by both its topological charge non-Hermitian winding numbers. We experimentally observe...
Chiral structures possessing differential optical responses to light circular polarization are very common in biological and organic compounds. Attaining chiroptical effects is of great biochemical importance, yet requires complicated structures. Circular dichroism (CD) spectrometers measuring the absorption between left- (LCP) right-circular (RCP) polarizations involve complex hardware switch laser manage data acquisition sequentially. Here, we present compact power-efficient...
Abstract Catalytic asymmetric aminative dearomatization of 1‐substituted 2‐naphthols was successfully implemented with electrophilic azodicarboxylates under the catalysis chiral Sc III /pybox complexes. This intermolecular reaction represents a hitherto unknown enantioselective CN bond‐forming process through direct phenolic compounds to generate nitrogen‐containing quaternary carbon stereocenters.
We design, fabricate, and experimentally demonstrate an optically active metasurface of λ/50 thickness that rotates linearly polarized light by 45° over a broadband wavelength range in the near IR region. The rotation is achieved through use planar array plasmonic nanoantennas, which generates fixed phase-shift between left circular right components incident light. Our approach built on new supercell design methodology: judiciously designing location orientation individual antennas...
Abstract A novel palladium(II)‐catalyzed [5+2] oxidative annulation of readily available o ‐arylanilines with alkynes has been developed for building a seven‐membered N‐heterocyclic architecture containing biaryl linkage. This method is applicable to wide range unprotected and internal alkynes, results in the chemoselective preparation imine‐containing dibenzo[ b , d ]azepines high yields excellent diastereoselectivity respect two types stereogenic elements.
Abstract Reported is a highly chemoselective intermolecular annulation of indole‐based biaryls with bromoalkyl alkynes by using palladium/norbornene (Pd/NBE) cooperative catalysis. This reaction realized through sequence Catellani‐type C−H alkylation, alkyne insertion, and indole dearomatization, forming two C(sp 2 )−C(sp 3 ) one bonds in single chemical operation, thus providing diverse range pentacyclic molecules, containing spiroindolenine fragment, good yields excellent functional‐group...
Inorganic perovskite materials have demonstrated outstanding performance in the field of photovoltaic devices due to their superior charge carrier transport properties and excellent thermal stability. In particular, inorganic derivative phases show special terms phase stability optoelectronic application, especially transition investigation. However, commercial applications still face challenges large recombination at interface, resulting poor efficiency metastable such as iodide existing...
Abstract A novel palladium‐catalyzed [4+1] spiroannulation was developed by using a C(sp 3 )−H activation/naphthol dearomatization approach. This bimolecular domino reaction of two aryl halides realized through sequence cyclometallation‐facilitated activation, biaryl cross‐coupling, and naphthol dearomatization, thus rendering the rapid assembly new class spirocyclic molecules in good yields with broad functional‐group tolerance. Preliminary mechanistic studies indicate that C−H cleavage is...
Solid-state electrolytes (SSEs) are potential candidates for developing high-energy-density and safe all-solid-state lithium (Li)-metal batteries due to the elimination of most safety issues encountered with liquid electrolytes.
In linear, lossless, time-invariant, and nonbiased acoustic systems, mode transitions are time reversible, consistent with Lorentz reciprocity implying a strict symmetry in space-time for sound manipulation. Here, we overcome this fundamental limitation by implementing spatiotemporally modulated metamaterials that support nonreciprocal steering. Our mechanism relies on the coupling between an ultrathin membrane external biasing electromagnetic fields, realizing programmable dynamic control...
Speeding up the transmission of information carried by waves is fundamental interest for wave physics, with pivotal significance underwater communications. To overcome current limitations in transfer capacity, here we propose and experimentally validate a mechanism using multipath sound twisting to realize real-time high-capacity communication free signal-processing or sensor-scanning. The undesired channel crosstalk, conventionally reduced via time-consuming postprocessing, virtually...
Readily available 2-naphthols undergo [2 + 2 1] spiroannulation reactions with alkynes in the presence of a PdII catalyst and an oxidant. This process relies on C–H functionalization naphthyl ring dearomatization at 1-position to provide variety spirocyclic compounds. Using alkyl–aryl as coupling partners led regioisomeric mixtures favor head-to-tail isomer bearing quaternary carbon stereocenter.
An intermolecular spiroannulation reaction of appropriately substituted 2-arylphenols with internal alkynes has been developed by using a Ru(II) catalyst and an oxidant. This transformation was realized phenol-directed C-H activation, migratory insertion the alkyne, subsequent dearomatization phenolic ring, providing broad range highly functionalized spirocyclic compounds in moderate yields high regioselectivity.
Abstract A nickel/N‐heterocyclic carbene catalytic system has been established for decarbonylative borylation of amides with B 2 nep by C−N bond activation. This transformation shows good functional‐group compatibility and can serve as a powerful synthetic tool late‐stage amide groups in complex compounds. More importantly, key intermediate, the structure an acyl nickel was first confirmed X‐ray analysis. Furthermore, process also observed. These findings confirm mechanistic features...
Efficiently receiving underwater sound remotely from air is a long-standing challenge in acoustics hindered by the large impedance mismatch at water-air interface. Here, phase-engineered matching metasurface proposed and experimentally demonstrated for remote efficient water-to-air eavesdropping. The judiciously designed with near-unity transmission efficiency, long monitoring distance, high mechanical stiffness capable of making interface acoustically transparent and, same time,...
A microwave-assisted Pd(0)-catalyzed alkyne migratory insertion/β-naphthol dearomatization cascade process has been accomplished to access a variety of spirocyclic compounds bearing all-carbon quaternary stereogenic centers in high yields with excellent chemoselectivities.
An efficient method for the construction of dibenzo[b,d]azepines containing two distinct stereogenic elements in a highly diastereoselective fashion is described. The key [5 + 2] reaction to form π-allylpalladium species through sequential C-H activation and regiospecific migratory insertion diene. This observation contrasts with behavior 1,2-alkenes that generally underwent direct alkenylation via β-hydride elimination.
A novel Pd(0)-catalyzed intermolecular carbocyclization of phenol-derived biaryls with 1,3-dienes has been implemented through a sequence oxidative addition to the C–I bond, regioselective olefin insertion, and allylative dearomatization. This method provides broad range attractive spirocyclic compounds bearing two contiguous tertiary/quaternary carbon centers in good yields excellent chemoselectivity regioselectivity. Moreover, preliminary results indicate that asymmetric control this...