Xiangdan Li

ORCID: 0000-0003-4988-5498
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About
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Research Areas
  • Synthesis and properties of polymers
  • Liquid Crystal Research Advancements
  • Photonic and Optical Devices
  • Conducting polymers and applications
  • Silicone and Siloxane Chemistry
  • Semiconductor Lasers and Optical Devices
  • Supercapacitor Materials and Fabrication
  • Fuel Cells and Related Materials
  • Electrospun Nanofibers in Biomedical Applications
  • X-ray Diffraction in Crystallography
  • Photochromic and Fluorescence Chemistry
  • Organometallic Complex Synthesis and Catalysis
  • Carbon dioxide utilization in catalysis
  • Polydiacetylene-based materials and applications
  • Crystallization and Solubility Studies
  • Synthetic Organic Chemistry Methods
  • Advanced Sensor and Energy Harvesting Materials
  • Advanced optical system design
  • Epoxy Resin Curing Processes
  • Membrane-based Ion Separation Techniques
  • Supramolecular Self-Assembly in Materials
  • Electrocatalysts for Energy Conversion
  • Polyoxometalates: Synthesis and Applications
  • Organoboron and organosilicon chemistry
  • Luminescence and Fluorescent Materials

State Ethnic Affairs Commission
2012-2023

South Central Minzu University
2012-2023

Minzu University of China
2023

Yanbian University Hospital
2019

Jeonbuk National University
2000-2006

ConspectusSelf-assembled nanomaterials show potential high efficiency as theranostic agents for high-performance imaging and therapy. However, superstructures properties of preassembled are somewhat compromised under complicated physiological conditions. Given the advantages dynamic nature adaptive behavior self-assembly systems, we propose an "in vivo self-assembly" strategy in situ construction living objects. For proof-of-concept study self-assembly, developed a bispyrene (BP) molecule...

10.1021/acs.accounts.8b00398 article EN Accounts of Chemical Research 2019-01-17

We report an assembly and transformation process of a supramolecular module, BP-KLVFF-RGD (BKR) in solution on specific living cell surfaces for imaging treatment. The BKR self-assembled into nanoparticles, which further transformed nanofibers situ induced by coordination with Ca2+ ions.

10.1039/c6nr03580a article EN Nanoscale 2016-01-01

Abstract For the first time, high‐percentage molybdosilicic acid fiber mats (20–80% H 4 SiMo 12 O 40 ) were prepared using electrospinning technique. The characterized by IR, XRD, and DSC. results indicated that poly(vinyl alcohol) was changed from a semicrystalline to an amorphous state with increasing content. scanning electron microscopy (SEM) showed average diameter of fibers about 285–600 nm. effects viscosity conductivity /poly(vinyl solution on morphologies investigated. swelling...

10.1002/app.12325 article EN Journal of Applied Polymer Science 2003-05-22

Abstract A soluble aromatic polyimide was chloromethylated via a reaction with chloromethyl methyl ether in the presence of tin(IV) chloride to produce new starting material for modification polyimides. The chemical structure resulting polymer confirmed by 1 H NMR and Fourier transform infrared spectroscopy. maximum number groups per repeat unit 1.81. stable up 250 °C both chloroform tetrahydrofuran. So that its utilization further could be demonstrated, cinnamic acid reacted formed...

10.1002/pola.10543 article EN Journal of Polymer Science Part A Polymer Chemistry 2002-11-15

A low-loss, thermally stable TE-mode selective optical waveguide was fabricated using a photosensitive fluorinated polyimide. The polymer undergoes photocrosslinking under UV exposure, thus changing its refractive index. photocrosslinking-induced index change utilized to form channel waveguides. propagation losses of the polyimide waveguides were less than 0.3 and 0.5 dB/cm for TE polarization at wavelengths 1.3 1.55 μm, respectively. measured extinction ratio higher 29 28 dB film remains...

10.1109/lpt.2002.801088 article EN IEEE Photonics Technology Letters 2002-09-01

Novel photocrosslinkable sulfonated poly(arylene ether sulfone)s containing chalcone moieties in the polymer backbone (SPAEF) were synthesized from 4,4′-dihydroxychalcone (4DHC), 4,4′-difluoro-diphenylsulfone-3,3′-disulfonate (SDFDPS) and decafluorobiphenyl (DFBP). We introduced a new strategy to crosslink photosensitive electrolyte membranes by UV irradiation swollen state order preserve interconnected hydrophilic channels hydrated SPAEF membrane. Photocrosslinked showed desired effects of...

10.1039/c2jm34372j article EN Journal of Materials Chemistry 2012-01-01

Graphene oxide (GO)-doped dimethyl sulfate (DMS)/poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) superconductive alignment layer, aligning liquid crystals (LCs) with super switching and non-residual direct current (non-residual DC) performance, is presented in this manuscript. Doping of GO increased the pristine polar energy a thin composite layer as well corresponding anchoring LCs sandwiched between these layers but only slightly affected layers' morphology. When rubbed...

10.1063/1.4949488 article EN Journal of Applied Physics 2016-05-19

We report a liquid crystal photoalignment material with high photosensitivity and excellent thermal stability. The chloromethylated aromatic polyimide exhibited defect-free homogeneous alignment of crystals upon irradiation polarized deep ultraviolet (UV) for 50s. aligning ability the film was retained up to 210°C, cell containing could be stored at 85°C more than 14 days without any deterioration. FT-IR UV–vis spectra confirmed that induced by photodecomposition polyimide, drastically...

10.1063/1.1797560 article EN Applied Physics Letters 2004-09-27
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