Riyas K M , Peediyekkal Jayaram , Prasoon Prasannan , Melethil Sabna , Pradeep Reddy Vanga
{"title":"Investigation of structural profiles and lattice dynamics in Gd2O3-Based multication phosphorescent materials: Studies on crystal field splitting and photoluminescence characteristics","authors":"Riyas K M , Peediyekkal Jayaram , Prasoon Prasannan , Melethil Sabna , Pradeep Reddy Vanga","doi":"10.1016/j.jssc.2025.125571","DOIUrl":"10.1016/j.jssc.2025.125571","url":null,"abstract":"<div><div>Gd<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>: Li phosphors were synthesized via high-temperature solid-state reactions, revealing significant symmetry distortions and wavelength tuning to orange emissions upon lithium incorporation. Li<sup>+</sup> ions introduced crystal field effects that favored electric dipole transitions. Rietveld refinement of X-ray diffractogram data (Li doping: 4 %–12 %) confirmed phase purity. Incorporating Li <sup>+</sup> ions into Eu<sup>3</sup>-doped Gd<sub>2</sub>O<sub>3</sub> nanoparticles induced notable changes in lattice dynamics, evidenced by Raman mode evolution. Raman intensity increased up to 10 % Li doping and decreased beyond, indicating an optimal doping concentration for structural coherence. UV–Vis spectroscopy and Tauc plot analysis showed a red shift in the absorption edge and enhanced absorbance due to oxygen vacancies and interstitial defects. The optical bandgap narrowed from 5.71 eV (undoped) to 5.17–5.08 eV with Li doping, confirming defect-driven modulation of the electronic structure and improved energy transfer in the Eu<sup>3+</sup>-activated matrix. Photoluminescence spectra and CIE analysis revealed rare orange emissions from Eu<sup>3+</sup>. Judd–Ofelt (JO) theory was applied to assess the luminescent properties. JO parameters (Ω<sub>2</sub> and Ω<sub>4</sub>), along with fluorescence lifetimes and radiative transition rates, validated the efficiency of the samples as orange emitters. Calculations showed Ω<sub>2</sub> values were consistently greater than Ω<sub>4</sub>, indicating asymmetry in the local environment of the dopant, which enhances the relaxation of electric dipole selection rules. This asymmetry facilitates intense <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transitions, accounting for the enhanced orange emission intensity. These findings suggest the samples as promising candidates for efficient orange-emitting phosphors.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125571"},"PeriodicalIF":3.5,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tio Putra Wendari , Muhammad Ali Akbar , Zulhadjri , Restu Rahmi Tazkiya , Yulia Eka Putri , Thamil Selvi Velayutham , Arniati Labanni
{"title":"Investigation on structure, electrical, and energy storage performances of Na0.5Bi0.5TiO3-based ferroelectric ceramic via multivalent Ca2+/Nb5+ substitution prepared by hydrothermal method","authors":"Tio Putra Wendari , Muhammad Ali Akbar , Zulhadjri , Restu Rahmi Tazkiya , Yulia Eka Putri , Thamil Selvi Velayutham , Arniati Labanni","doi":"10.1016/j.jssc.2025.125569","DOIUrl":"10.1016/j.jssc.2025.125569","url":null,"abstract":"<div><div>Dielectric capacitors utilizing ferroelectric compounds have attracted significant research interest due to their high-power density and rapid charge/discharge capabilities. One such promising ferroelectric material is Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> (NBT), but its typical ferroelectric behavior, characterized by large hysteresis loops, leads to significant energy loss and limits its storage efficiency. In this study, a modified NBT-based compound, Na<sub>0.455</sub>Bi<sub>0.375</sub>Ca<sub>0.17</sub>Ti<sub>0.92</sub>Nb<sub>0.08</sub>O<sub>3</sub> (NBCTN), was successfully synthesized via the hydrothermal method, which offers lower reaction temperatures and shorter processing times. A pseudocubic structure with the <em>P</em>4<em>mm</em> space group was confirmed by XRD analysis. Dielectric measurements revealed a broad peak at 0 °C with minimal frequency dependence, confirming diffuse ferroelectric phase transition behavior (DPT) contributing to enhanced energy storage characteristics. Room temperature ferroelectric hysteresis loops exhibited a maximum polarization (<em>P</em><sub><em>m</em></sub>) of 6.04 μC/cm<sup>2</sup> and a remnant polarization (<em>P</em><sub><em>r</em></sub>) of 0.4 μC/cm<sup>2</sup> under an applied electric field of 80 kV/cm. Additionally, the NBCTN ceramics demonstrated excellent energy storage performance, achieving a recoverable energy density (W<sub>rec</sub>) of 218.90 mJ/cm<sup>3</sup> and a high energy efficiency (<em>η</em>) of 82.89 %. These results highlight the potential of NBCTN as a promising candidate for next-generation high-energy-density capacitors.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125569"},"PeriodicalIF":3.5,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Avila , M.C. Vázquez , J. Rodríguez-Hernández , R. Mojica , A.A. Lemus-Santana , M. Avila , M. González , E. Reguera
{"title":"Coexistence of two magnetic sublattices in 2D transition metal nitroprussides, T(L)2[Fe(CN)5NO] with T = Mn, Co, Ni; L = 2-ethylimidazole, Imidazo[1,2-a]pyridine","authors":"Y. Avila , M.C. Vázquez , J. Rodríguez-Hernández , R. Mojica , A.A. Lemus-Santana , M. Avila , M. González , E. Reguera","doi":"10.1016/j.jssc.2025.125567","DOIUrl":"10.1016/j.jssc.2025.125567","url":null,"abstract":"<div><div>Transition metal nitroprussides form an interesting family of coordination polymers with 3D and 2D structural modifications. The 2D series has a Hofmann-like structure and can be formed from a large set of organic pillar molecules (L). This contribution reveals the coexistence of antiferromagnetic order within the inorganic layer T[Fe(CN)<sub>5</sub>NO] of the titled 2D solids, and a weak ferromagnetic-like interaction between the paramagnetic metal centers (T) from adjacent layers, T-(L)<sub>2</sub>-T. The latter interaction is possible through the π-π stacking and hydrogen bonding between pillar (L) molecules. SQUID magnetic data recorded for the titled solids are consistent with such a model of coexistence of two magnetic sublattices. IR and Raman spectra, as well as structural studies from powder XRD patterns, complemented the information derived from the magnetic measurements. The metal (T) polarizing power determines the charge subtraction from the molecular ring, favoring a stronger dipole-dipole coupling and more significantly π-π stacking. From the experimental data obtained, the regularities regarding the roles of both metal and pillars, as well as solid crystal structures, were rationalized.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125567"},"PeriodicalIF":3.5,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144851881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structural, optical, and electrochemical performance of a novel lead-free Pd(II) perovskite for Zn2+ detection","authors":"Sarra Bougossa , Ahlem Guesmi , Jassem Wannassi , Noureddine Mhadhbi , Naoufel Ben Hamadi , Lotfi Khezami , Jeanneau Erwann , Houcine Barhoumi , Houcine Naϊli","doi":"10.1016/j.jssc.2025.125566","DOIUrl":"10.1016/j.jssc.2025.125566","url":null,"abstract":"<div><div>A novel two-dimensional lead-free Pd (II)-based perovskite, (C<sub>4</sub>H<sub>16</sub>N<sub>3</sub>)[PdCl<sub>4</sub>]Cl (abbreviated DET[PdCl<sub>4</sub>]Cl), was successfully synthesized via slow evaporation at room temperature. Single-crystal X-ray diffraction analysis indicates that it crystallizes in the orthorhombic <em>Pnma</em> space group, forming a 2D layered structure comprising corner-sharing [PdCl<sub>6</sub>] octahedra interconnected through organic diethylenetriammonium cations. The structure is stabilized through numerous N–H⋯Cl hydrogen bonds, which lead to a robust three-dimensional network. Infrared spectroscopy reveals the presence of functional groups as well as hydrogen bonding associations. At the same time, UV–Vis diffuse reflectance spectroscopy reveals three absorption bands and a direct optical bandgap of 2.7 eV, confirming the material's semiconductor nature. Photoluminescence studies show a strong emission peak at 530 nm, with CIE chromaticity coordinates (0.3648, 0.5026), indicating potential for optoelectronic and light-emitting applications. Thermal analysis (TGA-DTA) demonstrates high thermal stability up to 280 °C with three distinct decomposition stages and endothermic peaks associated with structural transitions. Electrochemical tests show that DET [PdCl<sub>4</sub>]Cl-modified glassy carbon electrodes (GCEs) improve electron transfer and electrochemical performance. The sensor displays high sensitivity and selectivity for Zn<sup>2+</sup> detection, with a low detection limit of 2 × 10<sup>−8</sup> M and a linear range up to 1 × 10<sup>−5</sup> M. It offers good stability and reproducibility, with a relative standard deviation of 1.51 %. Tests on real water samples show recovery rates between 97 % and 102 %, confirming the sensor's accuracy for environmental monitoring. Overall, DET [PdCl<sub>4</sub>]Cl shows great potential for use in optoelectronic devices and heavy metal detection due to its thermal stability, semiconductor properties, and strong electrochemical performance.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125566"},"PeriodicalIF":3.5,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144829707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gd-based ferrocene complex with a large magnetocaloric effect from rapid room temperature synthesis","authors":"Xiaofei Zhang , Yuwei Wu , Shengqi An , Zhenqian Zhang","doi":"10.1016/j.jssc.2025.125568","DOIUrl":"10.1016/j.jssc.2025.125568","url":null,"abstract":"<div><div>We report the fabrication of a novel heterometallic Gd-based ferrocene complex (Gd-Fc MOF) using 1,1′-ferrocenedicarboxylic acid (FDCA) as an organic ligand and gadolinium (III) nitrate hydrate as a metal ion source. Comprehensive investigation of the crystal structure and magnetic properties revealed a remarkable cryogenic magnetocaloric effect (MCE) near the liquefaction temperature of helium <em>T</em> = 2.5 K. Under a magnetic field change of Δ<em>H</em> = 7 T, the maximum entropy change (−Δ<em>S</em><sub>M</sub><sup>max</sup>) reaches to 49.19 J kg<sup>−1</sup> K<sup>−1</sup>. This outstanding MCE arises from the synergistic interplay of the specific assembly structure, properties inherent to the FDCA ligand, and the large spin ground state of Gd<sup>3+</sup>. The Gd-Fc MOF exhibits significant promise for efficient cryogenic magnetic refrigeration in molecular-based systems. This potential arises from its high metal proportion, elevated theoretical magnetic entropy, rapid room-temperature synthesis capability, good magnetocaloric effect (MCE) performance near liquid helium temperatures, and a large calculated relative cooling power (<em>RCP</em>) of 460.7 J kg<sup>−1</sup>, which demonstrates practical cooling capacity.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125568"},"PeriodicalIF":3.5,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhidong Ma , Xiayu Li , Yuting Xu , Xingyu Zhao , Yilu Zhu , Wenzhe Yang , Jian Li
{"title":"High-efficiency and thermally stable Cr3+-Doped CaCd2Ga2Ge3O12 phosphor for broadband near-infrared LED applications","authors":"Zhidong Ma , Xiayu Li , Yuting Xu , Xingyu Zhao , Yilu Zhu , Wenzhe Yang , Jian Li","doi":"10.1016/j.jssc.2025.125564","DOIUrl":"10.1016/j.jssc.2025.125564","url":null,"abstract":"<div><div>Advances in science and technology are increasing the use of intelligent near-infrared light sources in daily life, driven by their applications in food monitoring and analysis, night-vision imaging, and biology. This has spurred interest in new broadband near-infrared luminescent materials; however, poor thermal stability limits their application. Herein, This article provides new insights into near-infrared phosphors with improved thermal stability. A novel Cr<sup>3+</sup> doped near-infrared phosphor with improved thermal stability has been reported. Under excitation of 450 nm light, CaCd<sub>2</sub>Ga<sub>2-<em>x</em></sub>Ge<sub>3</sub>O<sub>12</sub>:Cr<sup>3+</sup> exhibits broadband emission originating from <sup>4</sup>T<sub>2</sub>–<sup>4</sup>A<sub>2</sub> from 640 nm to 1010 nm which reached maximum peak at 740 nm with a full width at half-maximum (FWHM) from 158 to 192 nm, driving from two Cr<sup>3+</sup>centers in CaCd<sub>2</sub>Ga<sub>2-<em>x</em></sub>Ge<sub>3</sub>O<sub>12</sub>:<em>x</em>%Cr<sup>3+</sup> (<em>x</em> = 0.01, 0.02, 0.03, 0.04, 0.05), as evidenced by spectra and decay curves.The optimal internal quantum efficiency of the phosphor is 19.1 %, and the internal quantum efficiency is 69.0 %. At 373 K, it can maintain a luminescence intensity of about 90 %, and even at 423 K, it can maintain a luminescence intensity of no less than 80 % compared to room temperature. Combining CaCd<sub>2</sub>Ga<sub>2</sub>Ge<sub>3</sub>O<sub>12</sub>:Cr<sup>3+</sup> with <strong>a 460 nm blue InGaN chip</strong>, bringing about a device that shows a near-infrared output power of 35.84 mW when operating with current 300 mA. A high thermal stability near-infrared pc-LED was manufactured and demonstrated for rapid imaging and night vision of fruits.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125564"},"PeriodicalIF":3.5,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144851882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ivan G. Sheptun , Valery G. Smotrakov , Inna V. Lisnevskaya , Olga Yu. Grapenko , Anton A. Zabolotnyi , Elizaveta S. Kulikova , Victoria A. Shuvaeva , Nikita V. Ter-Oganessian
{"title":"Targeting a medium-entropy perovskite: Single-crystal growth and phase competition in the PbSc1/2Ta1/2O3–PbIn1/2Nb1/2O3–PbIn1/2Ta1/2O3–PbSc1/2Nb1/2O3 system","authors":"Ivan G. Sheptun , Valery G. Smotrakov , Inna V. Lisnevskaya , Olga Yu. Grapenko , Anton A. Zabolotnyi , Elizaveta S. Kulikova , Victoria A. Shuvaeva , Nikita V. Ter-Oganessian","doi":"10.1016/j.jssc.2025.125565","DOIUrl":"10.1016/j.jssc.2025.125565","url":null,"abstract":"<div><div>Single crystals in the PbSc<sub>1/2</sub>Ta<sub>1/2</sub>O<sub>3</sub>–PbIn<sub>1/2</sub>Nb<sub>1/2</sub>O<sub>3</sub>–PbIn<sub>1/2</sub>Ta<sub>1/2</sub>O<sub>3</sub>–PbSc<sub>1/2</sub>Nb<sub>1/2</sub>O<sub>3</sub> compositional space were grown by the flux method with the aim of obtaining a medium-entropy perovskite of the nominal composition PbSc<sub>1/4</sub>In<sub>1/4</sub>Nb<sub>1/4</sub>Ta<sub>1/4</sub>O<sub>3</sub>. The synthesis yielded two distinct crystal phases: a perovskite-type phase with the composition PbSc<sub>0.34</sub>In<sub>0.16</sub>Nb<sub>0.12</sub>Ta<sub>0.38</sub>O<sub>3</sub> and a pyrochlore-type phase with composition Pb<sub>2</sub>Sc<sub>0.25</sub>In<sub>0.2</sub>Nb<sub>0.5</sub>TaO<sub>6+δ</sub>. The crystal structure and elemental distribution were analyzed using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and synchrotron-based powder X-ray diffraction. Dielectric measurements of the perovskite crystal were performed over a broad range of temperatures and frequencies. The results highlight the challenges associated with phase selectivity and cation incorporation during single-crystal growth in multicomponent oxide systems.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"351 ","pages":"Article 125565"},"PeriodicalIF":3.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Øystein S. Fjellvåg , Dipankar Saha , Dmitry Chernyshov , Fabian L.M. Bernal , Helmer Fjellvåg , Bjørn C. Hauback , Bruno Gonano
{"title":"On the low temperature crystal structure of KCrF3","authors":"Øystein S. Fjellvåg , Dipankar Saha , Dmitry Chernyshov , Fabian L.M. Bernal , Helmer Fjellvåg , Bjørn C. Hauback , Bruno Gonano","doi":"10.1016/j.jssc.2025.125558","DOIUrl":"10.1016/j.jssc.2025.125558","url":null,"abstract":"<div><div>We report on the low-temperature phase transition and crystal structure of KCrF<sub>3</sub>, revisiting the previously reported reentrant tetragonal transition at 5 K. Using high-resolution X-ray powder diffraction across a temperature range of 5–300 K in two independent experiments, we study the structural developments and apply symmetry-mode analysis to describe the transition from tetragonal to monoclinic. A tilt of the CrF<sub>6</sub>-octahedra drives the symmetry reduction. Evaluation of the bond lengths and angles shows no sign of a reentrant or incipient transition. Our findings confirm that the low-temperature phase of KCrF<sub>3</sub> is monoclinic.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"352 ","pages":"Article 125558"},"PeriodicalIF":3.5,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Molten salt synthesis of poly(benzoxazine)-based hierarchical porous carbons for dye adsorption and supercapacitor applications","authors":"Jinze Wu , Xiping Zhu , Danying Zuo , Hongjun Li , Hongwei Zhang","doi":"10.1016/j.jssc.2025.125560","DOIUrl":"10.1016/j.jssc.2025.125560","url":null,"abstract":"<div><div>Porous carbon materials are utilized in various applications related to environmental protection, as well as in energy storage and conversion. Nevertheless, traditional methods for preparing these porous carbon materials necessitate the use of a protective gas, such as nitrogen or argon, which complicates the process and leads to increased costs. In this study, we employed a straightforward and quick method to synthesize porous carbon materials in an air atmosphere, utilizing polybenzoxazine as the precursor and the molten salt method as the reaction medium. Thanks to the protective and etching properties of the molten salt, the resulting porous carbon achieved a maximum specific surface area of 1225 m<sup>2</sup> g<sup>−1</sup>, which provided it with an impressive adsorption capacity of 354.61 mg g<sup>−1</sup> for methylene blue and a significant specific capacitance of 195 F g<sup>−1</sup>. Furthermore, the zinc ion capacitor assembled with this porous carbon material exhibited a specific capacitance of 220 F g<sup>−1</sup>. This research not only presents a type of high-performance porous carbon material but also emphasizes the important insights gained from the one-step carbonization approach for polybenzoxazine precursors without the need for protective gas.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"351 ","pages":"Article 125560"},"PeriodicalIF":3.5,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kaiying Chen, Ping Xiong, Qi Zhuang, Weimin Shi, Gang Li
{"title":"High proton conductivity of a three-dimensional Cu(II) supramolecule built by multicarboxylate and N-containing ligands","authors":"Kaiying Chen, Ping Xiong, Qi Zhuang, Weimin Shi, Gang Li","doi":"10.1016/j.jssc.2025.125559","DOIUrl":"10.1016/j.jssc.2025.125559","url":null,"abstract":"<div><div>Recent research has seen a surge in interest toward exploring proton conductivity (σ) in crystalline materials, which combine high crystallinity with diverse physicochemical properties. However, investigations into supramolecular complexes remain limited. Herein, we designed a three-dimensional supramolecular complex, [Cu<sub>2</sub>(H<sub>2</sub>L)(phen)<sub>2</sub>]•2H<sub>2</sub>O (<strong>1</strong>), by reacting the imidazole multicarboxylic acid, 2,2'-(1,4-phenyl)bis(1H-imidazole-4,5-dicarboxylic acid) (H<sub>6</sub>L) with CuCl<sub>2</sub> in the presence of 1,10-phenanthroline (phen). Systematic characterization of compound <strong>1</strong> revealed a strong positive correlation between σ and both temperature and relative humidity (RH). Notably, the σ reached a maximum value of 1.87 × 10<sup>−3</sup> S cm<sup>−1</sup> under 100 °C/98 % RH. These findings highlight the promising potential of such supramolecular complexes for applications in proton exchange membrane fuel cells and other advanced energy technologies. This work not only expands the scope of proton-conductive materials but also paves the way for the rational design of high-performance systems through the use of supramolecular engineering.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"351 ","pages":"Article 125559"},"PeriodicalIF":3.5,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}