Inorganic Chemistry最新文献

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Gold(I) Complexes with Bulky Phosphanes: A Dual Approach to Triplet Harvesting and Hydroamination Catalysis
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-11 DOI: 10.1021/acs.inorgchem.4c04964
Araceli de Aquino, Nazaret Santamaría, Artur J. Moro, David Aguilà, Auxiliadora Prieto, M. Carmen Nicasio, João Carlos Lima, Laura Rodríguez
{"title":"Gold(I) Complexes with Bulky Phosphanes: A Dual Approach to Triplet Harvesting and Hydroamination Catalysis","authors":"Araceli de Aquino, Nazaret Santamaría, Artur J. Moro, David Aguilà, Auxiliadora Prieto, M. Carmen Nicasio, João Carlos Lima, Laura Rodríguez","doi":"10.1021/acs.inorgchem.4c04964","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c04964","url":null,"abstract":"Two families of mononuclear gold(I) complexes featuring Au-chromophore units, with chromophores being carbazole (<b>a</b>), phenanthrene (<b>b</b>), or dibenzofuran (<b>c</b>), were synthesized. The Au(I) atoms are coordinated to two phosphanes, either PMe<sub>2</sub>Ar<sup>Xyl2</sup> (Ar<sup>Xyl2</sup> = 2,6-C<sub>6</sub>H<sub>3</sub>-(2,6-C<sub>6</sub>H<sub>3</sub>–Me<sub>2</sub>)<sub>2</sub>) (<b>P1</b>) or the bulkier PCyp<sub>2</sub>Ar<sup>Xyl2</sup> (Cyp = cyclopentyl) (<b>P2</b>). The photophysical properties of these complexes were extensively studied, with a particular focus on the effects of phosphane bulkiness and chromophore electron-donating capacity on triplet state quantum yields (Φ<sub>T</sub>). Nanosecond-laser flash photolysis measurements were employed to calculate Φ<sub>T</sub>. Time-dependent density functional theory (TD-DFT) calculations supported the absorption and emission assignments, providing insights into the electronic state gaps involved in photophysical processes and their relative populations. The parent complex AuCl<b>P2</b> in combination with NaBAr<sub>4</sub><sup>F</sup>, as a chloride scavenger, served as an efficient catalyst for the hydroamination of a variety of alkynes and amines, under mild conditions and with low Au loading (0.1–0.2 mol %). Luminescent studies allowed us to check the active catalytic species.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"2 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393668","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
Highly Sensitive and Selective Detection of Uranyl Ions Based on a Tb3+-Functionalized MOF via Competitive Host–Guest Coordination
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-11 DOI: 10.1021/acs.inorgchem.4c05586
Jian Xie, Jinpeng Liang, Ji Lei, Yiheng Xiao, Feng Luo, Baowei Hu
{"title":"Highly Sensitive and Selective Detection of Uranyl Ions Based on a Tb3+-Functionalized MOF via Competitive Host–Guest Coordination","authors":"Jian Xie, Jinpeng Liang, Ji Lei, Yiheng Xiao, Feng Luo, Baowei Hu","doi":"10.1021/acs.inorgchem.4c05586","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c05586","url":null,"abstract":"Owing to the rapid development of the nuclear industry, uranium has become a global environmental contaminant due to its radiotoxicity and chemotoxicity, posing significant threats to human health and ecological safety. Although various instrumental and chemical analytical methods have been developed for uranyl ion detection in aquatic environments, searching for new sensors with high stability, sensitivity, and selectivity remains a challenge. In this study, a luminescent Zr-based metal–organic framework (MOF), designated as Tb@UiO-66-(COOH)<sub>2</sub>, was successfully synthesized utilizing a postsynthetic exchange (PSE) method along with Tb<sup>3+</sup> ion doping for uranyl ion detection. Interestingly, the presence of UO<sub>2</sub><sup>2+</sup> ions causes a replacement of guest ions (Tb<sup>3+</sup>) in the sensor via a competitive host–guest interaction, leading to significant luminescence quenching. The attenuation of the luminescence intensity of Tb@UiO-66-(COOH)<sub>2</sub> exhibits an excellent linear relationship with UO<sub>2</sub><sup>2+</sup> ion concentrations within a wide range of 0–2.52 μM. Notably, Tb@UiO-66-(COOH)<sub>2</sub> demonstrates an unprecedentedly high detection sensitivity (<i>K</i><sub>sv</sub> = 2.16 × 10<sup>5</sup> M<sup>–1</sup>) and an extremely low limit of detection (LOD) down to 8.03 nM (1.91 ppb) in deionized water. More importantly, Tb@UiO-66-(COOH)<sub>2</sub> can achieve high selectivity and efficient detection performance, even in the presence of significant excesses of competing ions. The values of <i>K</i><sub>sv</sub> were determined to be 2.10 × 10<sup>5</sup> M<sup>–1</sup> in Xie’ao Lake water and 3.05 × 10<sup>5</sup> M<sup>–1</sup> in seawater; the values of LOD were determined to be 8.26 nM (1.96 ppb) in Xie’ao Lake water and 5.68 nM (1.35 ppb) in seawater. To the best of our knowledge, this is the first instance of introducing a competitive host–guest coordination strategy into a MOF-based chemical sensor to achieve high-performance uranyl ion detection. Hence, the present work offers a novel idea for building functional MOFs for uranyl ion detection in aqueous solutions.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"22 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393718","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
Fabricating MOF–GO Composites by Modulating Graphene Oxide Content to Achieve Superprotonic Conductivity 通过调节氧化石墨烯含量制造 MOF-GO 复合材料以实现超质子传导性
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-11 DOI: 10.1021/acs.inorgchem.4c05114
Parvathy M. Unnikrishnan, Gopika Premanand, Samar K. Das
{"title":"Fabricating MOF–GO Composites by Modulating Graphene Oxide Content to Achieve Superprotonic Conductivity","authors":"Parvathy M. Unnikrishnan, Gopika Premanand, Samar K. Das","doi":"10.1021/acs.inorgchem.4c05114","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c05114","url":null,"abstract":"Metal–organic frameworks (MOFs) have emerged as crucial materials for proton conductivity, especially in the context of the growing need for alternative energy sources. Enhancing the proton conductivity of MOFs has been a major focus with one effective approach involving the integration of MOFs with graphene oxide (GO) to form composite materials. In this study, Cr-MIL-101 MOF is selected, and its growth on GO sheets has been achieved through <i>in situ</i> crystallization, leading to the formation of MOF–GO composites with varying GO content, <b>MIL-101/GO(</b><i><b>x</b></i><b>%)</b>, (<i>x</i> = 1%, 2%, and 5%). The oxygen functional groups on the 2D-GO layer <i>e.g.</i>, carboxyl, hydroxyl, and epoxy groups improve both the acidity and hydrophilicity of the composite, which directly contributes to improved proton conductivity. All the composites, fabricated in this work, exhibit higher conductivity than that of the parent MOF due to the additional acidic functional groups introduced by GO. Among the different composites, the <b>MIL-101/GO(2%)</b> composite exhibits the highest proton conductivity, achieving superprotonic conductivity value of 0.105 S cm<sup>–1</sup> at 80 °C and 98% relative humidity (RH). These results highlight the potential of MOF–GO composites for their application as nanofillers in proton exchange membranes for proton exchange membrane fuel cells (PEMFCs) and other energy-related technologies.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"54 1 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393716","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
Exploring Bonding Properties and Photophysical Behavior of Naphthoquinone-Based Rhenium(I) Tricarbonyl Complexes: A Combined Experimental and Theoretical Approach
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-11 DOI: 10.1021/acs.inorgchem.4c04987
Tamara Maldonado, Belén Gómez-Arteaga, Lucas Lodeiro, Alberto Aravena, Geraldine Jara, Andrés Vega, Guillermo Ferraudi, Alejandra Gómez, Sebastián Gallardo-Fuentes
{"title":"Exploring Bonding Properties and Photophysical Behavior of Naphthoquinone-Based Rhenium(I) Tricarbonyl Complexes: A Combined Experimental and Theoretical Approach","authors":"Tamara Maldonado, Belén Gómez-Arteaga, Lucas Lodeiro, Alberto Aravena, Geraldine Jara, Andrés Vega, Guillermo Ferraudi, Alejandra Gómez, Sebastián Gallardo-Fuentes","doi":"10.1021/acs.inorgchem.4c04987","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c04987","url":null,"abstract":"In this work, we describe the synthesis, characterization, and spectroscopic properties of four new rhenium(I) tricarbonyl complexes bearing a pyridyl imidazole-naphthoquinone (<b>Py-Im-Nq</b>) ligand. The spectroscopic, X-ray, and electrochemical analyses confirm the formation of neutral complexes in all cases. Although the <b>Py-Im-Nq</b> ligand possesses two distinct chelating fragments, we observed a selective formation of the <i>N</i>,<i>N</i>-isomer rather than the <i>N,O</i>-coordination. EDA calculations revealed that the origin of the <i>N</i>,<i>N</i>-linkage isomerism results from more favorable electrostatic interactions present in the <i>N</i>,<i>N</i>-coordination. Furthermore, EDA-NOCV analysis indicated that the bonding situation in these complexes can be described by the Dewar–Chatt–Duncanson model, providing a quantitative characterization of the donation and back-donation interaction components in these complexes. Finally, we examined the spectroscopic behavior (UV–vis and photoluminescence) of these new rhenium(I) complexes in solution. The characterization of the excited states was performed using TD-DFT and density difference isosurfaces. It was found that, in contrast to typical <i>fac</i>-[Re(NN)(CO)<sub>3</sub>L]<sup>0/+</sup> systems, the low-lying transitions exhibit intraligand (IL) character, with charge transfer predominantly occurring from the imidazole ring to the carbonyl group in the quinone moiety. In contrast, a mixed metal-to-ligand charge transfer (MLCT)/IL transition is assigned to the electronic excitation at shorter wavelengths.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"16 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385007","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
Absence of Long-Range Magnetic Ordering in a Trirutile High-Entropy Oxide (Mn0.2Fe0.2Co0.2Ni0.2Cu0.2)Ta1.92O6−δ
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-11 DOI: 10.1021/acs.inorgchem.4c04165
Gina Angelo, Liana Klivansky, Jeremy G. Philbrick, Tai Kong, Jian Zhang, Xin Gui
{"title":"Absence of Long-Range Magnetic Ordering in a Trirutile High-Entropy Oxide (Mn0.2Fe0.2Co0.2Ni0.2Cu0.2)Ta1.92O6−δ","authors":"Gina Angelo, Liana Klivansky, Jeremy G. Philbrick, Tai Kong, Jian Zhang, Xin Gui","doi":"10.1021/acs.inorgchem.4c04165","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c04165","url":null,"abstract":"Functionalities of solid-state materials are usually considered to be dependent on their crystal structures. The limited structural types observed in the emerging high-entropy oxides put constraints on the exploration of their physical properties and potential applications. Herein, we synthesized the first high-entropy oxide in a trirutile structure, (Mn<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>Cu<sub>0.2</sub>)Ta<sub>1.92</sub>O<sub>6−δ</sub>, and investigated its magnetism. The phase purity and high-entropy nature were confirmed by powder X-ray diffraction and energy-dispersive spectroscopy, respectively. X-ray photoelectron spectroscopy indicated divalent Mn, Co, Ni, and Cu along with trivalent Fe. Magnetic property measurements showed antiferromagnetic coupling and potential short-range magnetic ordering below ∼4 K. The temperature-dependent heat capacity data measured under zero and high magnetic fields confirmed the lack of long-range magnetic ordering and a possible low-temperature phonon excitation. The discovery of the first trirutile high-entropy oxide opens a new pathway for studying the relationship between the highly disordered atomic arrangement and magnetic interaction. Furthermore, it provides a new direction for exploring the functionalities of high-entropy oxides.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"1 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143384955","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
Structural Reconstruction via Carbon Nanotube Spatially Confined Metal Catalysis: A Morphology-Controlled Approach to Convert Polycyclic Aromatic Hydrocarbon into Carbon Nanofibers for Highly Active Anodes in Li-Ion Batteries
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-11 DOI: 10.1021/acs.inorgchem.4c05514
Ming Chen, Ming-Yang Zhao, Ke Liu, Feng-Ming Liu, Zhong-Yong Yuan, Xing Qian, Rong Wan, Chun-Sheng Li, Ai-Xiang Ding
{"title":"Structural Reconstruction via Carbon Nanotube Spatially Confined Metal Catalysis: A Morphology-Controlled Approach to Convert Polycyclic Aromatic Hydrocarbon into Carbon Nanofibers for Highly Active Anodes in Li-Ion Batteries","authors":"Ming Chen, Ming-Yang Zhao, Ke Liu, Feng-Ming Liu, Zhong-Yong Yuan, Xing Qian, Rong Wan, Chun-Sheng Li, Ai-Xiang Ding","doi":"10.1021/acs.inorgchem.4c05514","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c05514","url":null,"abstract":"By a carbon nanotube (CNT) spatially confined metal-catalyzed structural reconstruction, carbon nanofibers (CNFs) with a hollow, hollow-solid, solid graphite core, and CNT shell are prepared using nitrogen heterocycle (NHC) and polycyclic aromatic hydrocarbon (PAH) as carbon sources. The formation mechanism of CNFs with oriented graphene layers and enlarged intergraphene spacing is studied by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and selected area electron diffraction analysis. It revealed that this one-dimensional nanoconfined metal-catalyzed carbon rearrangement is totally different from the reported spatially localized metal-catalyzed graphitization of electrospun polymer and nanocasted carbohydrate nanofibers, as the graphene orientation, cavity volume, and interlayer distance of CNFs can be controlled by the carbon concentration-related competitive metal-catalyzed tip growth of latitudinal and longitudinal graphene layers from NHC and PAH. The unique CNF structure renders good electronic/ionic conductivity, abundant Li<sup>+</sup> storage interlayer gaps, and robust mechanical durability, resulting in outstanding electrochemical properties as anodes in lithium-ion batteries. The optimum CNF anode delivers a stable discharge capacity of 475 mA h g<sup>–1</sup> at 0.1 C, an extraordinary rate capability of 303 mA h g<sup>–1</sup> at 5 C, and a remarkable long-term cycling stability of 378 mA h g<sup>-1</sup> after 600 cycles at 1 C. This 1D nanoconfined metal catalysis synthesis could be useful for the development of efficient CNF anodes in many electrochemical reactions with a potential for industrial applications.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"79 5 Pt 1 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143384958","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
Elucidation of the Activity and pH Stability Limits of Polyoxometalate-Intercalated Layered Double Hydroxide Nanocomposites toward Water Oxidation Catalysis
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-11 DOI: 10.1021/acs.inorgchem.4c04619
Joaquín Soriano-López, Javier Quirós-Huerta, Álvaro Seijas-Da Silva, Ramón Torres-Cavanillas, Eduardo Andres-Garcia, Gonzalo Abellán, Eugenio Coronado
{"title":"Elucidation of the Activity and pH Stability Limits of Polyoxometalate-Intercalated Layered Double Hydroxide Nanocomposites toward Water Oxidation Catalysis","authors":"Joaquín Soriano-López, Javier Quirós-Huerta, Álvaro Seijas-Da Silva, Ramón Torres-Cavanillas, Eduardo Andres-Garcia, Gonzalo Abellán, Eugenio Coronado","doi":"10.1021/acs.inorgchem.4c04619","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c04619","url":null,"abstract":"The inclusion of water oxidation active polyoxometalates (POMs) inside layered materials is a promising strategy to increase their catalytic efficiency while overcoming their fragility under homogeneous conditions. In this sense, intercalation of POMs in the interlaminar space of layered double hydroxides (LDHs), formed by positively charged brucite-type inorganic layers, is a very interesting strategy that is gaining attention in the field. Despite their huge potential, there is a lack of accurate characterization of the materials, especially after their use as water oxidation catalysts under pH conditions in which the POM counterpart has been demonstrated to be unstable (strong alkali media). For this reason and as a proof of concept, we have intercalated the well-known [Co<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>(PW<sub>9</sub>O<sub>34</sub>)<sub>2</sub>]<sup>10–</sup> POM (<b>Co</b><sub><b>4</b></sub><b>-POM</b>) in the lamellar space of the <b>Mg</b><sub><b>2</b></sub><b>Al-LDH</b>, to study its catalytic capabilities and stability. Remarkably, the nanocomposites show improved water oxidation efficiencies with excellent stability in close-to-neutral media compared with the water-insoluble cesium salt of <b>Co</b><sub><b>4</b></sub><b>-POM</b> or commercial Co<sub>3</sub>O<sub>4</sub>. However, thorough postcatalytic characterization of the nanocomposites demonstrates that the polyoxotungstate framework of the POM suffers from hydrolytic instability in strong alkali conditions, leading to the formation of a mixed-valence cobalt(II/III) oxide in the interlayer space of <b>Mg</b><sub><b>2</b></sub><b>Al-LDH</b>. This work highlights the importance of accurately assessing the fate of the catalytic POM after the catalytic reaction, especially when conditions are employed outside the pH stability window of the POM, which can lead to erroneous conclusions and mistaken catalytic activities.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"1 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393615","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
Theoretical Investigations on the n-Type and p-Type Conductivity Mechanisms in BiTaO4 Photocatalysts through Intrinsic Point Defects and Group IIA and Group VIB Element Doping.
IF 4.3 2区 化学
Inorganic Chemistry Pub Date : 2025-02-10 Epub Date: 2025-01-31 DOI: 10.1021/acs.inorgchem.4c04888
HongChun Zheng, Song Ling, Bo Kong, Ti-Xian Zeng, Shan Jiang, Wentao Wang
{"title":"Theoretical Investigations on the n-Type and p-Type Conductivity Mechanisms in BiTaO<sub>4</sub> Photocatalysts through Intrinsic Point Defects and Group IIA and Group VIB Element Doping.","authors":"HongChun Zheng, Song Ling, Bo Kong, Ti-Xian Zeng, Shan Jiang, Wentao Wang","doi":"10.1021/acs.inorgchem.4c04888","DOIUrl":"10.1021/acs.inorgchem.4c04888","url":null,"abstract":"<p><p>The n-type and p-type conductivity mechanisms from intrinsic defects and Group IIA and Group VIB element doping in the photocatalyst BiTaO<sub>4</sub> are systematically investigated by employing hybrid density functional calculations. The results reveal that vacancies <i>V</i><sub>Bi</sub>, <i>V</i><sub>Ta</sub>, <i>V</i><sub>O</sub>, and antisite Ta<sub>Bi</sub> are the predominant defects, depending on growth conditions. Bi-rich, appropriate Ta-rich, and O-poor conditions can promote BiTaO<sub>4</sub> to form n-type conductivity due to the presence of the Ta<sub>Bi</sub> donor defect and its easier ionization. This explains the experimental n-type conductivity character well. Meanwhile, under O-rich, Bi-poor, and Ta-poor conditions, BiTaO<sub>4</sub> exhibits superior p-type conductivity by forming the excellent acceptor defects <i>V</i><sub>Bi</sub> and <i>V</i><sub>Ta</sub>. Moreover, the intrinsic p-type conductivity can be further strengthened via the introductions of the substitutional doping of M<sub>Bi</sub> (M = Mg, Ca, Sr, and Ba) under the Bi-poor, Ta-poor, and O-rich conditions, where the O vacancies should be induced and Sr is the best candidate. On the other hand, Group VIB element (Cr, Mo, and W) doping can improve intrinsic n-type conductivity under Bi-rich, appropriate Ta-rich, and O-poor conditions. W is the best candidate. These findings provide a comprehensive understanding of defect physics in BiTaO<sub>4</sub> and offer insights into optimizing its photocatalytic performance through targeted defect engineering and impurity doping.</p>","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":" ","pages":"2443-2457"},"PeriodicalIF":4.3,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143062439","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
Zn(II)/La(III) Coordination Polymers Based on New Schiff Base Ligands for Highly Selective and Sensitive Detection of 2,4,6-Trinitrophenol
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-10 DOI: 10.1021/acs.inorgchem.4c04679
Ruonan Xuan, Du Ran, Chao Yang, Yuanying Lin, Weisheng Liu
{"title":"Zn(II)/La(III) Coordination Polymers Based on New Schiff Base Ligands for Highly Selective and Sensitive Detection of 2,4,6-Trinitrophenol","authors":"Ruonan Xuan, Du Ran, Chao Yang, Yuanying Lin, Weisheng Liu","doi":"10.1021/acs.inorgchem.4c04679","DOIUrl":"https://doi.org/10.1021/acs.inorgchem.4c04679","url":null,"abstract":"In recent years, nitro explosives have posed a threat to national security and human health due to their hazard and environmental contamination. The rapid and effective detection of nitro explosives remains a challenge. In this work, a new Schiff base ligand H<sub>2</sub>L was carefully designed and successfully synthesized, H<sub>2</sub>L = 1,1′-((1<i>E</i>,1′<i>E</i>)-(cyclohexane-1,4-diylbis (azanylidene)) bis (methylidene) bis (naphthalene-2-ol). Two new coordination polymers, [Zn<sub>2</sub>L<sub>2</sub>]<sub><i>n</i></sub> and [La(NO<sub>3</sub>)<sub>3</sub> (H<sub>2</sub>L)<sub>2</sub>CH<sub>3</sub>OH]<sub><i>n</i></sub>, were constructed by a solvothermal reaction. The aforementioned coordination polymers were characterized by X-ray, PXRD, TGA, and FT-IR, and the results demonstrated that the Zn-CP and the La-CP exhibited a one-dimensional chain structure and a two-dimensional reticular structure. Given the excellent performance of coordination polymers (CPs) in the field of fluorescence analysis and sensing, fluorescence sensing experiments were conducted on nitro explosives. The experimental results demonstrated that Zn-CP exhibited high selectivity and sensitivity for the detection of 2,4,6-trinitrophenol (TNP) by fluorescence quenching, with a detection limit of 4 × 10<sup>–6</sup> M. The detection limit of La-CP for TNP was even as low as 0.78 × 10<sup>–6</sup> M, and the quenching effect constants <i>K</i><sub>SV</sub> were 7.03 × 10<sup>3</sup> and 1.59 × 10<sup>4</sup> M<sup>–1</sup>. Through experimentation and density functional theory calculations, the observed fluorescence quenching can be attributed to three mechanisms: photoinduced electron transfer, resonance energy transfer, and electrostatic interactions between CPs and NACs. Moreover, sensor-coated portable test strip devices were fabricated for easy and rapid on-site detection of the TNP explosive.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"44 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375792","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
Water-Mediated Chiral Resolution of Ag–NHC(Nucleobase) Complexes
IF 4.6 2区 化学
Inorganic Chemistry Pub Date : 2025-02-10 DOI: 10.1021/acs.inorgchem.4c05384
Alvaro Polo, Ricardo Rodríguez, Ramón Macías, Daniel Cobo Paz, Pablo J. Sanz Miguel
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