Inorganic Chemistry最新文献

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Delineating the Effects of Counterions on the Structural and Vibrational Properties of U(IV) Lindqvist Polyoxometalate Complexes 反离子对U(IV) Lindqvist多金属酸氧配合物结构和振动性能的影响
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-30 DOI: 10.1021/acs.inorgchem.5c00033
Primadi J. Subintoro, Korey P. Carter
{"title":"Delineating the Effects of Counterions on the Structural and Vibrational Properties of U(IV) Lindqvist Polyoxometalate Complexes","authors":"Primadi J. Subintoro, Korey P. Carter","doi":"10.1021/acs.inorgchem.5c00033","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00033","url":null,"abstract":"Herein we conducted a full investigation into the fundamental structural and vibrational properties of uranium(IV) Peacock–Weakley-type lacunary Lindqvist (W<sub>10</sub>) polyoxometalate (POM) complexes. We recently demonstrated the importance of the secondary lattice elements in tuning the distortion of the D<sub>4d</sub> symmetry in W<sub>10</sub> POM complexes, and here, we synthesized eight UW<sub>10</sub> complexes with different alkali metal counterions and evaluated how the composition and packing of counterion species affected complex structural and vibrational properties. Single-crystal X-ray diffraction analysis on complexes <b>1–8</b> revealed changes in structural distortion parameters as a function of differences in counterion configurations, while far-infrared and Raman spectra for <b>1</b>–<b>8</b> also demonstrated that vibrational mode frequencies were sensitive to changes in counterion composition and packing. To more effectively compare different counterion configurations, we developed counterion effective ionic radius (eIR) as a new structural parameter, and comparisons between structural distortion parameters and eIR values strongly suggested that modulation by the secondary lattice elements can affect structural and vibrational manifolds within POM complexes. Partial least squares (PLS) analysis was used to quantitatively evaluate correlations observed within this investigation, and PLS statistical models showed a strong correlation between counterion eIR and both structural distortion parameters and vibrational mode frequencies.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"71 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coupling Dimethylglyoxime to Enhance Coordination Bonds of Pd Single-Atom Catalyst for Solving Stability and Activity Conflict 偶联二甲基乙肟增强钯单原子催化剂配位键解决稳定性和活性冲突
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-30 DOI: 10.1021/acs.inorgchem.5c01615
Junxiang Lu, Yuting Liu, Shasha Zhang, Juhong Nie, Bing Tang, Jia Guan, Jian Zhang
{"title":"Coupling Dimethylglyoxime to Enhance Coordination Bonds of Pd Single-Atom Catalyst for Solving Stability and Activity Conflict","authors":"Junxiang Lu, Yuting Liu, Shasha Zhang, Juhong Nie, Bing Tang, Jia Guan, Jian Zhang","doi":"10.1021/acs.inorgchem.5c01615","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01615","url":null,"abstract":"Regulating the strength of coordination bonds plays an important role in synergizing the activity and stability of single-atom catalysts (SACs) but is often limited due to coordination atoms from the inorganic carrier lattice being tough to modify. It is fascinating yet rarely explored to immobilize organic molecules on lattice atoms for modulating the character of coordination bonds. Herein, a valid inorganic–organic coupling strategy is developed to enhance Pd–O coordination bonds within Pd-SAC for reconciling activity and stability. Nickel hydroxide enriched with Ni<sup>2+</sup> vacancies is utilized to bind Pd centers, and dimethylglyoxime (DMG) bonds with its OH groups by H<sub>2</sub> reduction, forming a Pd–O-DMG structure. Compared with the pristine Pd–O structure, whose activity descends greatly during the recycling process, the Pd–O-DMG structure makes the activity unchanged after 6 used times for the Suzuki–Miyaura reaction. The Pd-SAC has mild and economic reaction conditions (at 70 °C under air in ethanol without excess base) and good substrate tolerance. Further theoretical calculations show that coupled DMG induces hydrogen bonds on O atoms of the oxazole around Pd centers and thus strengthens Pd–O coordination bonds to exhibit good stability and activity.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"51 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
AIE-Active Zr-Organic Gels for Luminescent Solar Concentrators. 用于发光太阳能聚光器的活性zr -有机凝胶。
IF 4.3 2区 化学
Inorganic Chemistry Pub Date : 2025-05-30 DOI: 10.1021/acs.inorgchem.5c01166
Haijiang Bian, Zipeng Wang, Qiang Jing, Haiguang Zhao, Zhe Zhang, Jianxin Song, Yuanqian Ai, Jing Ding, Xianjun Guo, Chao Wang, Wei Liu
{"title":"AIE-Active Zr-Organic Gels for Luminescent Solar Concentrators.","authors":"Haijiang Bian, Zipeng Wang, Qiang Jing, Haiguang Zhao, Zhe Zhang, Jianxin Song, Yuanqian Ai, Jing Ding, Xianjun Guo, Chao Wang, Wei Liu","doi":"10.1021/acs.inorgchem.5c01166","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01166","url":null,"abstract":"<p><p>Luminescent metal-organic gels (MOGs) have emerged as a novel class of soft materials characterized by their unique metal-ligand coordination frameworks, which endow them with high functionalization, plasticity, and chemical stability. This study introduces a zirconium-based organic gel (Zr-Gel) exhibiting aggregation-induced emission (AIE), readily synthesized on a large scale via a straightforward solvothermal route. The as-synthesized Zr-Gel exhibits a broader excitation range and higher excitation intensity than pure H<sub>4</sub>ETTC ligand, with a Stokes shift of approximately 0.50 eV and a high quantum yield of 84.24%. In contrast to metal-organic framework (MOF) materials composed of the same ligand and metal, the Zr-Gel retains a high fluorescence quantum yield even at excitation wavelengths down to 300 nm. Such exceptional properties make them highly promising as fluorescent materials for optoelectronic devices. As a proof of concept, we fabricated Zr-Gel-based filled luminescent solar concentrators (LSCs) that achieved an optical conversion efficiency (η<sub>opt</sub>) of 1.70% under simulated sunlight illumination (100 mW cm<sup>-2</sup>). For comparison, coated LSCs based on PCN-94 and PCN-128 were also prepared, further validating the superior performance of Zr-Gel and highlighting the significant potential of MOGs for LSC applications.</p>","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144186067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tetracoordinated Manganese(II) Halide with Multimode Thermochromic Luminescence for Anticounterfeiting and Encryption 具有多模热致变色发光的四配位卤化锰防伪和加密
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-30 DOI: 10.1021/acs.inorgchem.5c00833
Zhaohui Huang, Xiaoli Wang, Peng Du, Chuanqi Feng, Ping Niu, Dongmei Xu, Lumin Wang, Wei Gao, Aixin Song
{"title":"Tetracoordinated Manganese(II) Halide with Multimode Thermochromic Luminescence for Anticounterfeiting and Encryption","authors":"Zhaohui Huang, Xiaoli Wang, Peng Du, Chuanqi Feng, Ping Niu, Dongmei Xu, Lumin Wang, Wei Gao, Aixin Song","doi":"10.1021/acs.inorgchem.5c00833","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c00833","url":null,"abstract":"Manganese(II) halides have received a booming development owing to their flexible structures and remarkable optical properties, whereas those with multimode luminescence color changes under specific stimuli are rarely reported. In this study, we synthesized a zero-dimensional (C<sub>5</sub>H<sub>14</sub>NO)<sub>2</sub>MnBr<sub>4</sub> single crystal, which experiences an order–disorder phase transition from <i>P</i>2<sub>1</sub>/<i>c</i> to <i>P</i>2/<i>m</i> at 268 K. Intriguingly, the emission color of (C<sub>5</sub>H<sub>14</sub>NO)<sub>2</sub>MnBr<sub>4</sub> exhibits a “symmetric” switching of green–yellow–orange–red–orange–yellow–green within the temperature range of 80–420 K. For the low-temperature phase (LTP) below 268 K, the green and red lights at 510 and 640 nm are derived from the <i>d</i>–<i>d</i> electron transition of Mn(II) and the emission of self-trapped excitons (SETs), respectively. For the high-temperature phase (HTP) above 268 K, the dual emission peaks at 530 and 640 nm can be attributed to the simultaneous existence of trapping and detrapping processes of the STEs. Taking advantage of the unique thermochromic behaviors of (C<sub>5</sub>H<sub>14</sub>NO)<sub>2</sub>MnBr<sub>4</sub>, the temperature-responsive anticounterfeiting labels and encryption codes with multilevel design and high security have been constructed. This work provides new insights for the preparation of metal halides with multiple luminescence performances, facilitating the development of anticounterfeiting and information protection technologies.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"27 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thiolated Disc Nanoclusters with Pseudo-6-fold Symmetry 拟六重对称的硫化圆盘纳米团簇
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-30 DOI: 10.1021/acs.inorgchem.4c05540
Zi-Wei Ma, Zhen Ren, Xi-Yan Dong, Fangfang Pan
{"title":"Thiolated Disc Nanoclusters with Pseudo-6-fold Symmetry","authors":"Zi-Wei Ma, Zhen Ren, Xi-Yan Dong, Fangfang Pan","doi":"10.1021/acs.inorgchem.4c05540","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c05540","url":null,"abstract":"The formation of core–shell metal nanoclusters (NCs) with high symmetry remains significantly challenging. Here, we report the first synthesis and atomically precise structures of two discoidal clusters, <b>Ag</b><sub><b>69</b></sub> and <b>Ag</b><sub><b>78</b></sub>, protected by mixed thiol ligands, both exhibiting rare pseudo-6-fold symmetry, with crystallographic disorder considered. While their sizes and skeletons are similar, the key difference arises from the introduction of Cl<sup>–</sup> ions from in situ decomposition of CH<sub>2</sub>Cl<sub>2</sub> in the assembly of <b>Ag</b><sub><b>69</b></sub>. Replacing Cl<sup>–</sup>, S<sup>2–</sup> ions occupy the same positions in <b>Ag</b><sub><b>78</b></sub>, leading to stronger silver–sulfur coordination and closer silver–silver distances. Notably, within the crystal lattice of <b>Ag</b><sub><b>69</b></sub>, an additional Ag78 forms at the same location. <b>Ag</b><sub><b>69</b></sub> and <b>Ag</b><sub><b>68</b></sub> share an identical outer shell of Ag<sub>54</sub>S<sub>6</sub>(<sup><i>t</i></sup>BuS)<sub>24</sub>(<sup><i>t</i></sup>BuPhS)<sub>24</sub>, but differ at the core, with <b>Ag</b><sub><b>69</b></sub> having Ag<sub>15</sub>Cl<sub>6</sub>(<sup><i>t</i></sup>BuPhS)<sub>2</sub> and <b>Ag</b><sub><b>68</b></sub> having Ag<sub>14</sub>Cl<sub>6</sub>(<sup><i>t</i></sup>BuS)<sub>2</sub>. We also discuss the photoluminescent properties, and the photocatalytic degradation of organic dyes is also discussed. This work provides valuable insights into the formation of high-symmetry metal NCs and their potential applications in photochemistry.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"129 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scalable Co–Ni Mixed MOF Featuring Dual Functional Sites for C2H2 Separation with Excellent Shaping Performance 具有双功能位点的可扩展钴镍混合MOF具有优异的成型性能,可用于C2H2分离
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-30 DOI: 10.1021/acs.inorgchem.5c01467
Xue Li, Guangzu Xiong, Mingcheng Shi, Yuzhe Wang, Lingyao Wang, Zonglin Gu, Weidong Zhu, Yuanbin Zhang
{"title":"Scalable Co–Ni Mixed MOF Featuring Dual Functional Sites for C2H2 Separation with Excellent Shaping Performance","authors":"Xue Li, Guangzu Xiong, Mingcheng Shi, Yuzhe Wang, Lingyao Wang, Zonglin Gu, Weidong Zhu, Yuanbin Zhang","doi":"10.1021/acs.inorgchem.5c01467","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01467","url":null,"abstract":"The purification of C<sub>2</sub>H<sub>2</sub> from gas streams containing CO<sub>2</sub> persists as a formidable challenge in petrochemical manufacturing, primarily attributed to the identical kinetic diameters and the limitations of conventional separation methods. Herein, we report a scalable Co–Ni mixed metal–organic framework (MOF), Co(bpy)[Ni(CN)<sub>4</sub>], featuring dual functional sites, namely, unsaturated Ni<sup>2+</sup> open metal sites (OMS) and Lewis basic nitrogen atoms, for efficient C<sub>2</sub>H<sub>2</sub> capture. The framework exhibits a good C<sub>2</sub>H<sub>2</sub> uptake of 51.5 cm<sup>3</sup> g<sup>–1</sup> at 298 K and 1 bar, surpassing that of many popular MOFs. Synergistic interactions between C<sub>2</sub>H<sub>2</sub> and the dual sites, as revealed by DFT calculations, enable excellent IAST selectivity for equimolar C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub> (5.9) and C<sub>2</sub>H<sub>2</sub>/CH<sub>4</sub> (26.3) mixtures. Dynamic breakthrough experiments confirm robust separation performance under humid conditions, across temperatures (278 to 313 K), and over multiple cycles without degradation. Furthermore, shaping the MOF into pellets using polyvinyl butyraldehyde (PVB) binder retains its porosity and enhances processability, achieving a dynamic C<sub>2</sub>H<sub>2</sub> capture capacity of 37 cm<sup>3</sup> g<sup>–1</sup> from C<sub>2</sub>H<sub>2</sub>/CH<sub>4</sub> breakthrough separation. This work demonstrates a scalable, stable, and shapeable MOF with dual functional sites, offering a practical solution for industrial gas separation.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"3 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Situ-Generated Metalloligand Strategy for the Rational Design of 3d-3d-4f Metal–Organic Frameworks 3d-3d-4f金属有机框架合理设计的原位生成金属配体及策略
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-29 DOI: 10.1021/acs.inorgchem.5c01750
Qin Wang, Jinwei Yao, Jilei Wang, Pinfang Yan, Yan Xu
{"title":"In Situ-Generated Metalloligand Strategy for the Rational Design of 3d-3d-4f Metal–Organic Frameworks","authors":"Qin Wang, Jinwei Yao, Jilei Wang, Pinfang Yan, Yan Xu","doi":"10.1021/acs.inorgchem.5c01750","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01750","url":null,"abstract":"Metalloligands offer a powerful strategy for the rational design of lanthanide transition metal frameworks. In this study, we report three brand-new 3d-3d-4f heterometallic clusters: [Ln<sub>4</sub>Cr<sub>4</sub>NiCl(IN)<sub>9</sub>(μ<sub>2</sub>–OH)<sub>4</sub>(μ<sub>3</sub>–OH)<sub>4</sub>(μ<sub>4</sub>-O)<sub>4</sub>(H<sub>2</sub>O)<sub>5</sub>]·4.5H<sub>2</sub>O (Ln = Gd, referred to as <b>1-Gd</b><sub><b>4</b></sub><b>Cr</b><sub><b>4</b></sub><b>Ni</b>; Ln = Eu, referred to as <b>2-Eu</b><sub><b>4</b></sub><b>Cr</b><sub><b>4</b></sub><b>Ni</b>; HIN = isonicotinic acid) and [Dy<sub>3</sub>CrNi(IN)<sub>6</sub>(μ<sub>3</sub>–OH)<sub>4</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O)]·8H<sub>2</sub>O (referred to as <b>3-Dy</b><sub><b>3</b></sub><b>CrNi)</b> by precisely controlling reaction temperature and pH. Structural analysis reveals that the planar [NiCl(IN)<sub>4</sub>(H<sub>2</sub>O)]<sup>3–</sup> metalloligand directs <b>1-Gd</b><sub><b>4</b></sub><b>Cr</b><sub><b>4</b></sub><b>Ni</b> and <b>2-Eu</b><sub><b>4</b></sub><b>Cr</b><sub><b>4</b></sub><b>Ni</b> into symmetrical open-network architectures. In contrast, the vertical planar [Ni(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>(IN)<sub>2</sub>]<sup>4–</sup> metalloligand guides <b>3-Dy</b><sub><b>3</b></sub><b>CrNi</b> to form a high-symmetrical hexagonal-ring lanthanide MOF. Magnetic studies on <b>1-Gd</b><sub><b>4</b></sub><b>Cr</b><sub><b>4</b></sub><b>Ni</b> reveal weak antiferromagnetic interactions, exhibiting a magnetic entropy change of −Δ<i>S</i><sub>m</sub><sup>max</sup> = 20.38 J kg<sup>–1</sup> K<sup>–1</sup> at 3.5 K under Δ<i>H</i> = 7.0 T, highlighting its potential in magnetic refrigeration.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"3 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chiral-at-Tungsten Dioxo Complexes─A Computational Study on Inhibiting Racemization 手性钨二氧配合物─抑制外消旋化的计算研究
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-29 DOI: 10.1021/acs.inorgchem.5c01280
George Dhimba, Alfred Muller, Koop Lammertsma
{"title":"Chiral-at-Tungsten Dioxo Complexes─A Computational Study on Inhibiting Racemization","authors":"George Dhimba, Alfred Muller, Koop Lammertsma","doi":"10.1021/acs.inorgchem.5c01280","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01280","url":null,"abstract":"Chiral cis-WO<sub>2</sub>(acac)<sub>2</sub> and cis-WO<sub>2</sub>(nacnac)<sub>2</sub> complexes racemize via four pathways according to DFT calculations at ωB97X-D/6–311+G(2d,f) with LANL2DZ for W and with inclusion of acetonitrile solvent. Steric congestion by N-Me and N-Ph substitution of the two nacnac ligands has a substantial geometrical impact and raises the barriers for all pathways. Despite this, even all N-Me and all N-Ph substituted derivatives of cis-WO<sub>2</sub>(nacnac)<sub>2</sub> have the same four channels for racemization. For each of these complexes, the Dhimba-Muller-Lammertsma (DML) twist is preferred over the Conte-Hippler (CH) twist and significantly favored over the established Bailar (B) and Ray-Dutt (RD) twists. The favored DML barrier for WO<sub>2</sub>(nacnac)<sub>2</sub><sup>Ph4</sup> has a large estimated Δ<i>G</i> barrier of 25.7 kcal/mol, suggesting it to be a viable chiral-at-tungsten complex for asymmetric catalysis.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"19 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tuning Electronic Properties of Nanoporous Graphene 纳米多孔石墨烯的电子特性调谐
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-29 DOI: 10.1021/acs.inorgchem.5c01115
Bernhard Kretz, Ivor Lončarić
{"title":"Tuning Electronic Properties of Nanoporous Graphene","authors":"Bernhard Kretz, Ivor Lončarić","doi":"10.1021/acs.inorgchem.5c01115","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01115","url":null,"abstract":"Different nanoporous graphene structures have shown great promise for a wide variety of applications. However, due to limitations in experimental or computational throughput, nanoporous graphenes have not been investigated systematically. In this work, we combine density functional theory and machine learning to study 460 structures of nanoporous graphene made from four different templates. We shed light on structure-band gap relations and perform molecular dynamics simulations and phonon calculations in order to determine the role of electron–phonon coupling on the renormalization of temperature-dependent band gaps. Our results uncover that certain subsets of nanoporous graphene exhibit a similar trend in the band gap as a function of a structural parameter as has been observed for armchair graphene nanoribbons. Furthermore, we find that electron–phonon coupling varies over a large range in the investigated nanoporous graphenes and that it drives the closing of the band gap with larger temperatures. Finally, we suggest nanoporous graphene structures for different applications, such as field-effect transistors. Thus, our work can help guide the development and improvement of nanoporous graphene-based devices.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"148 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intrinsic Electronic Structure and Inhomogeneity of High-Entropy Layered REOBiS2 Superconductors 高熵层状REOBiS2超导体的本征电子结构和非均匀性
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-05-29 DOI: 10.1021/acs.inorgchem.5c01680
F. Minati, G. Tomassucci, M. Hattori, Y. Fujita, M. Nagao, L. Tortora, A. Barinov, M. Kopciuszynski, G. Campi, L. Boeri, T. Mizokawa, N. L. Saini
{"title":"Intrinsic Electronic Structure and Inhomogeneity of High-Entropy Layered REOBiS2 Superconductors","authors":"F. Minati, G. Tomassucci, M. Hattori, Y. Fujita, M. Nagao, L. Tortora, A. Barinov, M. Kopciuszynski, G. Campi, L. Boeri, T. Mizokawa, N. L. Saini","doi":"10.1021/acs.inorgchem.5c01680","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.5c01680","url":null,"abstract":"Two decades after the discovery of high-entropy alloys (HEAs), the field has witnessed these systems rise as prominent examples of high-performance functional materials, overcoming established knowledge of multicomponent systems. HEA superconductors are currently under thorough investigation due to their robust superconducting state and the possibility of enhancing their figure of merit through the high-entropy approach, in addition to the well-known mechanical and thermal properties of these materials. Here, we have investigated the electronic structure of HEA-type REOBiS<sub>2</sub> layered superconductors (RE = rare earth) using spectromicroscopy and angle-resolved photoemission spectroscopy (ARPES) with a submicron beam size. The overall features of the fundamental electronic structure are robust, showing limited effects of mixing entropy. We find an inherent coexistence of phases driven by local fluctuations in the interlayer interactions. This coexistence exhibits distinct patterns for different samples characterized by varying configurational entropy. Similarly, the Luttinger volume estimated from the ARPES spectra reveals differing self-doping regimes, indicating that RE valence fluctuations are possibly influenced by configurational disorder. Overall, this study represents the first report on the electronic structure of HEA-type BiS<sub>2</sub>-based superconductors and provides valuable insight into controlling superconducting properties by tailoring nano- to microstructures through a high-entropy approach.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"134 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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