Defu Sun

ORCID: 0009-0002-2946-5824
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About
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Research Areas
  • Crystal Structures and Properties
  • Nonlinear Optical Materials Research
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Solid-state spectroscopy and crystallography
  • Perovskite Materials and Applications
  • Luminescence and Fluorescent Materials
  • Luminescence Properties of Advanced Materials
  • Molecular Sensors and Ion Detection
  • Photorefractive and Nonlinear Optics
  • Nonlinear Optical Materials Studies
  • Crystal structures of chemical compounds
  • Nanocluster Synthesis and Applications
  • Organometallic Compounds Synthesis and Characterization

Qufu Normal University
2021-2025

In modern society, the investigation of highly efficient photoluminescent bulk materials with excitation-induced tunable multicolor luminescence and multiexciton generation (MEG) is great significance to information security application optoelectronic devices. this study, two Cu-based halide crystals (C4H10NO)4Cu2Br5·Br (C4H10NO)4Cu2I5·I·H2O, respectively, one-dimensional structures were grown by a solvent evaporation method. Unexpectedly, (C4H10NO)4Cu2I5·I·H2O displayed dual-color...

10.1021/acsami.3c17012 article EN ACS Applied Materials & Interfaces 2024-02-15

To design nonlinear optical (NLO) materials, we focused on combinations of d10 metal cation (Cd2+)-based chloride and morpholine molecules to form organic-inorganic hybrids. The O containing lone-pair electrons can be integrated with Cd2+ by a ligand-to-metal charge transfer (LMCT) strategy build acentric structures benefiting from the second-order Jahn-Teller effect. Introduction high-electronegativity chlorine make polyhedrons crystals more distorted conducive strong second harmonic...

10.1021/acs.inorgchem.2c00922 article EN Inorganic Chemistry 2022-05-10

Introducing electronegative species into organic constituents was considered to be one effective strategy for adjusting crystal symmetry and designing new nonlinear optical (NLO) materials. By substitution of C4 in piperidine (C5H11N) with oxygen, morpholine (C4H9NO) easily obtained. Therefore, design NLO crystals, we focused on combinations stereochemically active lone-pair (SCALP) cation (Pb2+)-based chloride bromide molecules. In this work, two lead halide hybrid perovskite (C4H10NO)PbX3...

10.1021/acs.inorgchem.2c03042 article EN Inorganic Chemistry 2022-10-07

To design excellent UV nonlinear optical crystals, via a combination of the two genes, planar π-conjugated 3-(aminomethyl)pyridinium ((3-AMP)2+, (C6H10N2)2+) and d10 metallic tetrahedral anion, novel organic-inorganic hybrid (3-C6H10N2)ZnX4 (X = Cl Br) bulk crystals are synthesized using simple solution method. Remarkably, they exhibit performances, including in short absorption edge (229 235 nm), robust second harmonic generation (SHG) intensity (2.05 4.36 × KDP), suitable large...

10.1002/smll.202501471 article EN Small 2025-03-27

Organic-inorganic hybrid Pb-halide perovskites have attracted tremendous interest due to their potential application in photovoltaic and optoelectronic fields. However, the toxicity poor stability of become key bottlenecks toward future commercialization industrialization. Therefore, this work, two novel lead-free perovskite nonlinear optical (NLO) crystals (2-AMP)2BiX7·H2O (X = Cl, Br) with high were successfully synthesized. Both belong orthorhombic P212121 space group, displaying a...

10.1021/acs.inorgchem.2c02433 article EN Inorganic Chemistry 2022-09-12
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