Table of Content

10 September 2026, Volume 47 Issue 9

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Preface

“探”微知著，格物致“用”—聚焦无机固体化学

HUANG Keke

2026, 47(9):  1-1. 

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Contents

Cover and Content of Chemical Journal of Chinese Universities Vol.47 No.9(2026)

2026, 47(9):  1-6. 

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Review

Regulation of Functional Materials by Jahn-Teller Distortion

LIANG Na, HUANG Keke

2026, 47(9):  20260202.  doi:10.7503/cjcu20260202

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The intrinsic lattice distortion induced by Jahn-Teller-active ions reduces the symmetry of the coordination geometry and the degeneracy of d-orbitals， thereby stabilizing reaction intermediates on the catalyst surface and effectively regulating the electronic and ionic conductivities of electrode materials during charge-discharge processes， which in turn significantly influence the macroscopic properties of the materials. This review systematically elucidates the origin and triggering mechanisms of the Jahn-Teller distortion， outlines its primary characterization methods， and highlights the applications of this effect in functional materials such as catalytic conversion and energy storage， aiming to provide a systematic reference for an in-depth understanding of the structure-property relationship between the Jahn-Teller distortion and macroscopic material performance.



New Perspective on Magnetic Metal Oxides： the Challenges of Amorphization

CHEN Junjie, XU Hankun, LI Qiang, DENG Jinxia, LIN Kun

2026, 47(9):  20260142.  doi:10.7503/cjcu20260142

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Amorphous metal oxides（AMOs）， characterized by long-range disorder and short-range order， exhibit distinct magnetic behaviors compared to crystalline materials. This review provides an overview of their structural characteristics， magnetism， and underlying mechanisms， with emphasis on typical phenomena such as superparamagnetism， spin glass， cluster glass and random exchange magnetic states， as well as their intrinsic correlations. Representative synthesis strategies， including melt-quenching， sol-gel， template， and mechanical amorphization， are also summarized. And their impacts on structure and properties are discussed. This review aims to elucidate the relationship between structural disorder and magnetism in AMOs.



In-Situ High-pressure Characterization Techniques and Research on Pressure-induced Phase Transition Materials

PEI Tianyao, WANG Yonggang, YUE Binbin

2026, 47(9):  20260234.  doi:10.7503/cjcu20260234

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High-pressure-induced structural phase transitions constitute a crucial pathway for discovering new phases and understanding material behaviors under extreme conditions. However， the transition pathways， intermediate states， and dynamics have long remained in a "black box"， necessitation in situ probing techniques for elucidation. This article reviews the recent progress in in situ probing techniques and mechanistic studies of structural phase transitions in high-pressure solid-state chemistry. First， the principles and applicable scopes of in situ characterization methods are introduced according to information levels， including X-ray diffraction， neutron diffraction， X-ray absorption fine structure， pair distribution function， Raman spectroscopy， infrared spectroscopy， ultraviolet-visible absorption spectroscopy， fluorescence spectroscopy， and second harmonic generation. Emerging directions such as ultrafast time-resolved techniques and machine-learning-assisted data analysis are also discussed. Second， using displacive phase transitions（SrTiO₃）， reconstructive phase transitions（graphite-diamond， Co₃P₂O₈）， pressure-induced amorphization（ice）， isostructural phase transitions（Ce）， and order-disorder phase transitions（IMMH _y PbBr₄） as representative examples， we demonstrate how in situ techniques reveal the microscopic mechanisms of pressure-driven structural evolution. Finally， current bottlenecks in time resolution and data interpretation are summarized， and future directions including multi-technique integration， ultrafast probing， and machine learning are prospected.



Macroscopic Porous Single-crystalline Materials

LIU Shaofang, XIE Kui

2026, 47(9):  20260187.  doi:10.7503/cjcu20260187

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Porous materials and single crystals both hold significant application value in modern science and technology. Introducing porosity into macroscopic single crystals offers a promising route to a new class of materials that combine an open porous architecture with a continuous single-crystalline skeleton， namely macroscopic porous single crystal（PSC）. In PSC， the continuous single-crystalline skeleton maintains long-range crystallographic order and effectively reduces grain-boundary effects on transport processes and structural stability， while the porous architecture provides mass-transport channels and accessible internal surfaces. However， conventional crystal growth processes generally tend toward densification， and pores are usually regarded as inclusions or defects. Therefore， the controllable introduction of porous structures into single crystals remains a fundamental challenge. This review focuses on lattice reconstruction strategies driven by solid-solid phase transformations. We discuss the basic mechanism by which a high-density single-crystalline mother phase is transformed in situ into a low-density target single-crystalline skeleton through selective component removal， lattice rearrangement， and phase-boundary migration， accompanied by pore formation. Using typical oxide systems such as TiO₂ and CeO₂ as examples， we further analyze how the crystallographic orientation， composition， relative density variation， and heat-treatment conditions of the mother phase regulate the facet orientation， porosity， pore size， and surface structure of the resulting PSC. Finally， with photoelectrochemical energy conversion as a representative application， we discuss the synergistic effects of the continuous single-crystalline skeleton， three-dimensionally interconnected pore channels， and tunable defect structures. We also outline future opportunities for these materials in structure-sensitive functional processes， including electron-phonon transport decoupling and isotope separation.



Preparation Strategies of Halide Solid-State Electrolytes： From Laboratory Synthesis to Scalable Manufacturing

ZHANG Zhenpu, HONG Bolong, YANG Daotong, NI Haijin, HUANG Keke, HAN Songbai

2026, 47(9):  20260203.  doi:10.7503/cjcu20260203

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Owing to their favorable oxidative stability， high ionic conductivity， and good mechanical processability， halide solid-state electrolytes have emerged as promising electrolyte candidates for all-solid-state batteries. With the development of systems such as chlorides， oxychlorides， and nitride-chlorides， halide solid-state electrolytes have made significant progress in ionic transport performance and structural regulation. However， these materials are still mainly at the stage of laboratory-scale preparation and cell validation， and their scalable application still faces several issues. This review summarizes the major preparation methods， including ball milling， solid-state reaction， solution-based synthesis， vapor-phase deposition， and related hybrid processing strategies. The characteristics of different processes in terms of structural regulation and scalable preparation potential are compared， and the key issues that need to be addressed during the transition from laboratory preparation to scalable manufacturing are further analyzed， including batch-to-batch consistency control， manufacturing-cost reduction， environmental- stability improvement， process controllability， and compatibility with practical battery-manufacturing workflows， thereby providing a reference for process optimization， scalable preparation， and application research of halide solid-state electrolytes in all-solid-state batteries.



Research Progress on Heteroatom Phosphorus Regulated Single-atom Electrocatalysts for Oxygen Reduction Reaction

LU Fenghong, LIU Defa, WANG Chengbin, LI Ping, WANG Lei, ZONG Lingbo

2026, 47(9):  20260197.  doi:10.7503/cjcu20260197

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Oxygen reduction reaction（ORR） is a key electrochemical process in energy storage and conversion devices such as fuel cells and metal-air batteries. ORR involves complex multi-electron and proton transfer processes， and its sluggish kinetics severely limits the energy conversion efficiency of these devices. Single-atom electrocatalysts（SACs） have emerged as a prominent focus in heterogeneous catalysis due to their high atomic utilization and unique electronic structures. Heteroatom doping serves as an effective strategy for modulating ORR performance. Among various heteroatoms， phosphorus（P） possesses lone pair electrons in its 3p orbitals， which can regulate the coordination microenvironment and charge distribution around the central metal atom， thereby tuning the adsorption/desorption strength of oxygen-containing intermediates and influencing ORR catalytic activity. This review systematically summarizes the regulatory mechanisms of P heteroatoms on the ORR performance of SACs， specifically in three aspects： （1） in the first coordination sphere， where P directly substitutes for N atoms coordinated to the central metal atom； （2） in the second or third coordination sphere， or in more peripheral regions； （3） through regulation by phosphorus compounds. This review elucidates the mechanisms by which heteroatom P influences ORR performance and establishes guiding principles for the design and synthesis of high-activity and high-durability single-atom ORR electrocatalysts via heteroatom doping.



Article

Construction and Magnetic Properties of Low-dimensional Ytterbium（III） Coordination Polymers Based on Formate and Oxalate Co-Ligands

ZHAI Xiaolu, LV Yun, LI Hui, HUANG Keke, WANG Yanhong, LU Hongcheng

2026, 47(9):  20260193.  doi:10.7503/cjcu20260193

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A novel layered magnetic ytterbium coordination compound， Yb（HCOO）（C₂O₄）（1，10-phen）（1，10-phen= 1，10-phenanthroline）， was synthesized via a solvothermal method. Its crystal structure and magnetic properties were characterized by means of X-ray diffraction（XRD）， infrared spectroscopy（IR）， thermogravimetric analysis（TGA）， and magnetic susceptibility measurements. Single-crystal structure analysis reveals that the magnetic Yb³⁺ ions are connected by formate and oxalate ligands to form a square magnetic lattice， with adjacent layers separated by 1，10-phen ligands. Magnetic measurements show that the dominant interaction between the Yb³⁺ ions is antiferromagnetic， and no long-range magnetic order is observed down to 2 K. This study provides a new synthetic strategy for constructing low-dimensional magnetic rare-earth coordination compounds.



Embedded Inducible Layered Nb₃VSe₆/Carbon Nanofiber Membrane Regulating Sulfide Conversion and Lithium Deposition to Achieve High-stability of Lithium-Sulfur Batteries

ZHANG Yingying, XUE Jiayi, WANG Chao, DANG Yuxin, ZHANG Peng, WANG Gaoliang, MA Tianshu, JIA Qi, WU Tong, LIU Jinghai

2026, 47(9):  20260220.  doi:10.7503/cjcu20260220

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Lithium sulfur batteries are considered as one of the most promising electrochemical energy storage devices for the next generation due to their theoretical specific capacity of 1675 mA·h/g and energy density of 2600 W·h/kg. However， the slow kinetics of the oxidation-reduction reaction of sulfur and lithium sulfide in lithium sulfur batteries， the shuttle effect of polysulfides， and the growth of lithium dendrites seriously hinder the development and application of lithium sulfur batteries. In this study， a flexible Nb₃VSe₆/carbon nanofiber composite membrane（NVSCNF） was prepared and used as an electrocatalytic membrane reactor（NVS@MR） for lithium-sulfur batteries. A layered catalyst with embedded induction was constructed by modifying 2H-NbSe₂ through V atom intercalation strategy. NVSCNF exhibits strong chemical adsorption capacity and excellent electrocatalytic activity toward lithium polysulfides， enhancing redox kinetics； furthermore， the abundant active sites on NVSCNF effectively regulate lithium deposition behavior and suppress dendrite growth. The assembled lithium-sulfur battery exhibited a discharge specific capacity of 1305.0 mA·h/g at a rate of 0.1 C. After 800 cycles at a rate of 5.0 C， the capacity remained at 502.3 mA·h/g. It could cycle stably for over 1000 h at a current density of 0.5 mA/cm²， with an initial overpotential of only 18.3 mV.



Articles: Inorganic Chemistry

Visualized Measurement of Self-assembly Efficiency in One-dimensional DNA Nanomaterials

LIU Yuqing, CHENG Jie, WANG Yue, JIAO Kai, ZHU Ying, LI Jiang, GUO Linjie

2026, 47(9):  20260103.  doi:10.7503/cjcu20260103

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One-dimensional（1D） DNA nanomaterials exhibit broad potential for applications across multiple fields. However， quantitative evaluation of their self-assembly efficiency remains challenging. In this work， six-helix bundle（6HB） DNA fibers were employed as a model system. Building upon existing image analysis methods， we developed an integrated and parameterized approach to overcome the challenges of single-particle identification and counting in high-aspect-ratio， entangled 1D fibers， and established an AFM image-based method for visualizing and quantifying self-assembly efficiency. In this method， the area coverage ratio and contour length density extracted from AFM images were used as quantitative parameters to characterize 1D DNA fiber networks. Using this method， the effects of buffer pH（5—11） and Mg²⁺ concentration（6.25—87.5 mmol/L） on the assembly behavior of 6HB DNA fibers were investigated. The results show that efficient assembly of 6HB DNA fibers occurs within a well-defined window of conditions. Continuous long fibers are preferentially formed in the pH range of 6—8， with the highest assembly efficiency at pH=8， where the area coverage ratio reaches ca. 36%， and the contour length density is ca. 8 μm/μm². When the pH value deviates from this range， the continuous 1D network gradually transforms into fragmented or disordered aggregates， and both parameters decrease to background levels. Fiber assembly also shows a clear threshold response to Mg²⁺ concentration： the assembly efficiency increases rapidly above 25 mmol/L， and stable long fibers form at concentrations above 50 mmol/L， corresponding to area coverage ratios >20% and contour length densities >4 μm/μm². These results quantitatively demonstrate the strong dependence of DNA nanostructure self-assembly on environmental conditions such as pH and ionic strength. The analytical framework established here provides a useful quantitative tool for the design， assembly， and application of 1D DNA nanomaterials.



Organic Chemistry

Synthesis and Properties of Imide-fused Naphtho［2，3-b：6，7-b′］difuran Derivatives

YANG Zihan, DONG Hao, LIU Zhongwei, LI Yanru, LI Jie, FEI Zhuping

2026, 47(9):  20260170.  doi:10.7503/cjcu20260170

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Fused furans and their derivatives have been used to develop organic optoelectronic functional materials due to their high rigidity， good coplanarity， and extended π-conjugated structure. However， compared with fused thiophenes and their derivatives， the structural diversity of fused furans and their derivatives remains limited， which restricts their further development. To address this issue， we fused imide groups with naphtha［2，3-b∶6，7-b'］difuran（NDF） units to synthesize a series of DFPI-Cn molecules， and systematically investigated their physicochemical properties as well as their performance in organic field-effect transistor devices. All the molecules exhibit good thermal stability， and their crystallization and melting temperatures gradually decrease with increasing alkyl side chain length. The molecular skeleton is slightly twisted， and the electron cloud distributions of the highest occupied molecular orbital and the lowest unoccupied molecular orbital are uniformly delocalized over the entire conjugated framework. The N-alkyl chains of the imide groups have no obvious effect on the absorption and emission spectra of the molecules in solution， but significantly modulate their absorption spectra in solid films. All three molecules show red emission. Single-crystal structure analysis reveals that DFPI-C5C5 molecules adopt a one-dimensional packing mode： two adjacent molecules form a dimer in a head-to-tail manner， and the dimers further stack with a certain rotation angle. The DFPI-C5C5 nanowire crystals prepared by physical vapor transport exhibit single-crystal characteristics and a flat surface morphology. Organic field-effect transistor devices based on these nanowire crystals show p-type charge transport properties with a hole mobility of up to 3.7×10⁻³ cm²·V⁻¹·s⁻¹. This work provides a new approach for the development of novel fused furan-based organic semiconductor materials.



Physical Chemistry

Preparation and Controllable Phase Change Properties of Composites Between Erythritol and Covalent Cross-linking Network

DONG Le, XU Yijie, FANG Haidong, LI Hua, CHEN Ziyu, ZHANG Shihui, SHI Quan

2026, 47(9):  20260135.  doi:10.7503/cjcu20260135

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A chemically cross-linked polymer network system based on polyethyleneimine（PEI） and glycerol triglycidyl ether（GTE） was constructed. Using this system as a matrix， erythritol（ERY） phase change composites with controllable heat release behavior were prepared， and the regulatory mechanism of the polymer network on the supercooling stability and crystallization behavior of ERY was systematically investigated. The results show that the polymer network interacts with ERY through physical interactions， and ERY maintains its original crystal structure within the network. Notably， the increase in cross-linking density of the polymer network leads to a decrease in the cold crystallization temperature， which contradicts conventional theoretical expectations， as a higher cross-linking density implies an increase in —OH groups within the network that should enhance interactions with ERY and thereby increase the cold crystallization temperature. Further analysis reveals that intramolecular hydrogen bonds formed among the —OH groups within the polymer network competitively weaken the effective interactions between the network and ERY molecules， thereby promoting its intrinsic crystallization behavior. This study provides a new perspective and experimental basis for in-depth understanding of the regulation of intermolecular interactions on the phase change thermodynamic behavior in ERY-based composite phase change materials.



Hydrogen Production Performance and Reaction Mechanism of Methanol Steam Reforming over Porous Sphere-supported Catalysts

HU Guangkai, ZHANG Yingchun, LIU Mengjiao, ZHANG Xin, ZHANG Weihua, SUN Zhimin, YU Bin, HUANG Tao, LI Yongxiang, YU Hao

2026, 47(9):  20260087.  doi:10.7503/cjcu20260087

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A "top-down" design concept was adopted in this paper. herein， a porous carbon sphere-supported catalyst（Cu-Zn/CS） was fabricated by means of a wet spinning technique and a competitive impregnation adsorption method and applied for the hydrogen（H₂） production via methanol steam reforming（MSR） reaction. Taking commercial Al₂O₃ as the comparative support， the morphological characteristics， crystal phase structure， physicochemical properties， catalytic performance， and reaction mechanism of Cu-Zn/Al₂O₃ and Cu-Zn/CS were compared and analyzed through a series of complementary characterizations and tests. The characterization results showed that the constructed Cu-Zn/CS had abundant multi-morphological and multi-scale pores and craquelure structures， which not only provided the necessary spatial foundation for the multiscale anchoring of active substances but also increased the contact probability between active sites and reactants during the reactions. Catalytic performance showed that， compared with Cu-Zn/Al₂O₃， the CO selectivity of Cu-Zn/CS was reduced by one order of magnitude， the H₂ selectivity was nearly doubled， and the high-temperature catalytic activity was improved under the condition of complete methanol conversion. In addition， in⁃situ DRIFTS experiments indicated that at high reaction temperatures， gaseous reactants on the surface of Cu-Zn/Al₂O₃ not only involved the main reaction of methanol catalytic conversion to CO₂ and H₂ but also concerned the side reaction of generating CO. On the surface of Cu-Zn/CS， the main reaction occurs， that is， the reaction path can be described as CH₃OH+H₂O→^*OCH₃+^*OH→^*HCHO→^*CHOO→^*CO₂+^*H₂.



Co-N-Rich Nitrogen-doped Carbon-supported Cobalt Nanoparticles for Hydrogen Production from Formic Acid

LI Linlin, WANG Chunzheng, ZHAO Xuyu, MENG Xianglong, LI Xiaoyun, GUO Hailing

2026, 47(9):  20260094.  doi:10.7503/cjcu20260094

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Using sucrose as the carbon source， urea as the nitrogen source， and cobalt nitrate as the precursor， a nitrogen-doped carbon-supported cobalt nanoparticle catalyst was prepared via a grinding-mixing and high-temperature calcination method. The as-synthesized catalyst was applied for hydrogen production from formic acid in the liquid phase. At 100 ℃， Co@NC-Co_0.1-Ur_2.3 catalyst achieved a hydrogen generation rate of 350 mL·g^-1·h^-1， exceeding the performance of some noble metal（Pd， Pt） catalysts and non-noble catalysts such as single-atom cobalt. Furthermore， the catalyst remains highly activity even after multiple recycles. Characterization results revealed that the abundant porous structure and high specific surface area might facilitate the adsorption of active species such as HCOO^* during the reaction， while the Co—N moieties are proposed as the catalytic active sites.



Rovibrational Spectrum of （SO₂）₂ Complex in the Asymmetric Stretching Region of SO₂

LI Xiang, PENG Kangning, LIU Zhuang, LUO Wei, LU Yan, ZHENG Rui

2026, 47(9):  20260116.  doi:10.7503/cjcu20260116

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High-resolution rovibrational spectra of （SO₂）₂ in the ν₃ asymmetric stretching region of SO₂ were measured using a mid-infrared continuously tunable external cavity quantum cascade laser combined with pulsed supersonic jet infrared absorption spectroscopy. A total of 490 infrared transitions were identified， including 395 transitions in the electron-doner（ED） band（J≤29， K_a≤11） and 95 transitions in the electron-acceptor（EA） band（J≤21， K_a≤8）. By integrating previously reported microwave spectral data， spectral data of SO₂ monomer in the v₁ excited state， and the newly measured spectral data in this work， global fitting was performed based on the asymmetric top Hamiltonian， yielding accurate ground and excited state spectroscopic parameters including rotational constants and centrifugal distortion constants. The band origins of the ED and EA bands of （SO₂）₂ are 1355.77424（14） and 1356.34969（27） cm^-1， respectively， exhibiting red shifts of 6.29 and 5.71 cm^-1 compared to the band origin of the v₃ band of SO₂ monomer.



Synthesis of Two-dimensional PdIr₂ Alloy Nanosheets for Enhanced Alkaline Hydrogen Evolution Reaction Performance

TAO Qingmei, CHENG Hao, DENG Peifeng, ZHANG Weichen, WANG Yunxing, LIU Jialun, CAO Xuye, YANG Zhenzhen, ZHANG Genlei

2026, 47(9):  20260146.  doi:10.7503/cjcu20260146

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In recent years， the electrochemical hydrogen evolution reaction（HER） has emerged as a promising approach for sustainable hydrogen production. Among various catalysts， Pd-based materials are regarded as one kind of the most promising alternatives to Pt-based counterparts. However， the excessively strong adsorption of hydrogen intermediates on Pd surfaces limits their HER efficiency. In this study， the two-dimensional PdIr₂ alloy nanosheets was synthesized via an organic-precursor decomposition method. The formation of the alloy structure effectively modulates the electronic configuration of Pd， thereby enhancing its alkaline HER performance. Electrochemical measurements show that the PdIr₂ alloy nanosheet catalyst achieves an overpotential of only 19 mV at a current density of 10 mA/cm² and a Tafel slope of 51.4 mV/dec， significantly outperforming commercial Pt/C and commercial Pd/C catalysts. In addition， the catalyst exhibits excellent long-term stability， with a voltage decay of only 63 mV over 136 h（average decay rate of 0.46 mV/h）. Notably， the decay voltage remains within 10 mV over the final 116 h， demonstrating superior stability compared to the reference catalysts.



Iron-doped Red Carbon Dot and Rolling Circle Amplification-mediated DNA Nano-assemblies for Targeted Drug Delivery

NING Gan, ZHUANG Jingyun, ZHANG Ruyan, DING Kexin, ZHOU Ting, WANG Xiufeng, WANG Fang, ZHANG Zhiqing

2026, 47(9):  20260027.  doi:10.7503/cjcu20260027

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A rolling circle amplification（RCA）-based assembly technique was proposed， which utilized the long single-stranded DNA produced by RCA as a scaffold. This scaffold was assembled with functional short strands into multivalent aptamers and subsequently combined with iron-doped red carbon dots（Fe-CDs） to construct a multivalent aptamer-based nanoplatform， termed assembly-Fe-CDs-doxorubicin（AFD）， for precision combination cancer therapy. In the AFD nanoplatform， the MUC1 aptamer exerted efficient targeting capabilities， precisely acting on cancer cells while minimizing collateral damage to normal cells. The Fe-CDs possessed peroxidase-like activity， which catalyzed the decomposition of hydrogen peroxide（H₂O₂） into hydroxyl radicals（·OH）， thereby achieving chemodynamic therapy（CDT）. Furthermore， the abundant CG base pairs within the AFD structure enabled the high-efficiency loading of doxorubicin （DOX）. Upon entering cancer cells via highly efficient targeting， the multivalent aptamers released the encapsulated Fe-CDs and DOX， facilitating the effective eradication of cancer cells. In summary， this multivalent aptamer nanoplatform based on DNA and Fe-CDs provided a promising and highly selective approach for enhancing the efficacy of cancer treatment.



Polymer Chemistry

Fabrication of a Flame-retardant Cu-based Metal Organic Framework and Its Effect on Properties of Epoxy Resin

WAN Songtao, CAO Zhilin, WANG Zhengzhou

2026, 47(9):  20260122.  doi:10.7503/cjcu20260122

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A copper-based metal-organic framework（Cu-MOF） with schiff base organic ligand 4，4'-［1，4-phenylenebis（methanylylidene）bis（nitrilo）］dibenzoic acid（TBPA） was first synthesized via ultrasound-assisted and hydrothermal methods. Then， a flame-retardant Cu-MOF derivative（Cu-MOF@DOPO） was prepared by reacting Cu-MOF with a reactive flame retardant 9， 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide（DOPO）. The Cu-MOF@DOPO was confirmed by multiple characterization techniques， including scanning electron microscopy（SEM）， transmission electron microscopy（TEM）， and X-ray diffraction（XRD）. The effect of Cu-MOF@DOPO on flame retardant， mechanical and thermal properties of epoxy resin（EP） was investigated. The results indicated that EP containing 2%（mass fraction） Cu-MOF@DOPO（EP/2MD） had a limiting oxygen index（LOI） of 29.6% and achieved a UL-94 V-0 rating. Meanwhile， the peak heat release rate（pHRR） and total heat release（THR） of EP/2MD decreased by 14.2% and 8.1%， respectively， while the total smoke production（TSP） slightly deceased compared with those of pure EP. During combustion， Cu-MOF@DOPO in EP exerted its flame-retardant action both in the condensed phase and the gas phase. Compared with the EP composites filled with Cu-MOF or the flame-retardant ligand TBPA-DOPO， the EP/Cu-MOF@DOPO composites exhibited a higher glass transition temperature and enhanced mechanical properties.