Chemistry - An Asian Journal最新文献

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A Photoisomerizable Chiral Dopant for Fast and Precise Controlling the Reflection Band of the CLCN Film. 一种快速精确控制CLCN薄膜反射带的光异构手性掺杂剂。
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-13 DOI: 10.1002/asia.202500312
Xingchen Liu, Limin Wu, Yi Li, Wei Liu, Yonggang Yang
{"title":"A Photoisomerizable Chiral Dopant for Fast and Precise Controlling the Reflection Band of the CLCN Film.","authors":"Xingchen Liu, Limin Wu, Yi Li, Wei Liu, Yonggang Yang","doi":"10.1002/asia.202500312","DOIUrl":"https://doi.org/10.1002/asia.202500312","url":null,"abstract":"<p><p>Colorful cholesteric liquid crystal polymer network (CLCN) patterns have been applied for decoration and anti-counterfeiting. Generally, the handedness of the reflected lights is the same. In this paper, a chiral dopant derived from cyanostilbene is synthesized. Due to the isomerization and [2 + 2] photocycloaddition under the irradiation of the 365-nm UV light, it exhibits a great change in the helical twisting power. The cholesteric liquid crystal mixture prepared using this chiral dopant can be applied for rapid optical recording. Colorful CLCN patterns are also prepared, which can reflect both left- and right-handed circularly polarized lights. Namely, different patterns are observed through left- and right-handed circular polarizers. Due to the luminescent property of the chiral dopant and its isomers, circularly polarized luminescence is emitted from the CLCN films.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00312"},"PeriodicalIF":3.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281808","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}
引用次数: 0
MOF-Based Composite Materials for Supercapacitors: Design, Performance, and Challenges. 基于mof的超级电容器复合材料:设计、性能和挑战。
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-13 DOI: 10.1002/asia.202500453
Asad Ur Rehman, Sami Ullah, Naseem Ahmad Khan, Muhammad Sufyan Javed, Lala Gurbanova, Mostafa A Ismail, Akbar Mohammad, Syed Shoaib Ahmad Shah, Muhammad Altaf Nazir
{"title":"MOF-Based Composite Materials for Supercapacitors: Design, Performance, and Challenges.","authors":"Asad Ur Rehman, Sami Ullah, Naseem Ahmad Khan, Muhammad Sufyan Javed, Lala Gurbanova, Mostafa A Ismail, Akbar Mohammad, Syed Shoaib Ahmad Shah, Muhammad Altaf Nazir","doi":"10.1002/asia.202500453","DOIUrl":"https://doi.org/10.1002/asia.202500453","url":null,"abstract":"<p><p>Composite materials based on metal-organic frameworks (MOFs) are appealing materials for supercapacitor electrodes because of their high specific surface area, large pore volume, and range of adjustable topologies. This review paper thoroughly examines the synthesis techniques, morphological traits, and problems associated with pristine MOFs. Then, this article focuses on the synthesis techniques of MOF-based composites that include MOF/carbon, MOF/metal oxide, MOF/conducting polymer, MOF-derived carbons, and multimetallic MOF composites. This review highlights the issues with pristine MOFs and defines the synthetic strategies to overcome their shortcoming by synthesizing composite materials. Then, this article sheds light on the potential uses of MOF-based composite materials for energy storage, emphasizing supercapacitors. Last, this article provides a complete set of recent integrated studies in the field of supercapacitor applications. In the end, this article provides a precise and concise conclusion to this study along with future perspectives on the new research directions.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00453"},"PeriodicalIF":3.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281814","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}
引用次数: 0
Construction and Self-Assembly of Oleanolic Acid-Short Peptide Hydrogels Based on Supramolecular Interaction. 基于超分子相互作用的齐墩果酸短肽水凝胶的构建与自组装。
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-13 DOI: 10.1002/asia.202500501
Shunmei He, Jun Zheng, Fujing Huang, Ying Zhou, Wei Li, Yajie Jiang, Hao Chen, Lei Fu, Xianweng Song
{"title":"Construction and Self-Assembly of Oleanolic Acid-Short Peptide Hydrogels Based on Supramolecular Interaction.","authors":"Shunmei He, Jun Zheng, Fujing Huang, Ying Zhou, Wei Li, Yajie Jiang, Hao Chen, Lei Fu, Xianweng Song","doi":"10.1002/asia.202500501","DOIUrl":"https://doi.org/10.1002/asia.202500501","url":null,"abstract":"<p><p>Oleanolic acid (OA), a natural product with diverse biological activities, faces clinical limitations due to its poor bioavailability caused by hydrophobic pentacyclic structure. To address this issue, we designed a novel class of oleanolic acid-short peptide derivatives (OA-GFFK) by conjugating OA with a water-soluble short peptide (glycine-phenylalanine-phenylalanine-lysine, GFFK). Molecular dynamics simulation (MD) and density functional theory (DFT) predicted its gelation properties, and OA-GFFK was successfully transformed into supramolecular hydrogels via a simple three-step process (dissolution-ultrasonication-resting). Structural characterization revealed that gelation is driven by π-π stacking and hydrogen bonding, leading to a nanofiber network. And the hydrogels exhibited excellent self-healing, shear response, biocompatibility, and antibacterial activity. This study details a research process for the design and simple preparation of oleanolic acid-short peptide derivative hydrogels, providing design insights and a theoretical basis for developing OA derivatives.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00501"},"PeriodicalIF":3.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281810","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}
引用次数: 0
(R)- and (S)-SbF3(C8H9NO3): Chiral Antimony-Based Hybrid Materials with Enhanced Second-Harmonic Generation and Birefringence. (R)-和(S)- sbf3 (C8H9NO3):增强二次谐波产生和双折射的手性锑基杂化材料
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-10 DOI: 10.1002/asia.202500622
Seoyeon Choi, Kang Min Ok
{"title":"(R)- and (S)-SbF<sub>3</sub>(C<sub>8</sub>H<sub>9</sub>NO<sub>3</sub>): Chiral Antimony-Based Hybrid Materials with Enhanced Second-Harmonic Generation and Birefringence.","authors":"Seoyeon Choi, Kang Min Ok","doi":"10.1002/asia.202500622","DOIUrl":"https://doi.org/10.1002/asia.202500622","url":null,"abstract":"<p><p>Noncentrosymmetric (NCS) materials have garnered significant attention due to their unique second-harmonic generation (SHG) properties, which are crucial for nonlinear optical (NLO) applications. However, achieving optimal SHG efficiency and birefringence remains challenging for Sb<sup>3</sup>⁺-based hybrid materials, which are being actively explored as potential alternatives to toxic Pb<sup>2</sup>⁺-based systems. In this study, we successfully synthesized two novel chiral NCS compounds, (R)-SbF₃(C₈H₉NO₃) [(R)-Sb] and (S)-SbF₃(C₈H₉NO₃) [(S)-Sb], by incorporating the stereochemically active lone pair cation Sb<sup>3</sup>⁺, highly electronegative F⁻ anions, and the chiral zwitterionic 4-hydroxyphenylglycine. The compounds crystallize in the polar noncentrosymmetric space group, P2<sub>1</sub> (No. 4), featuring [SbOF₃] polyhedra that form hydrogen bonds with 4-hydroxyphenylglycine. Notably, the Sb<sup>3</sup>⁺ lone pairs align along the b-axis, resulting in enhanced polar characteristics. These structural features endow the compounds with outstanding NLO properties, including an SHG response 2.6 times greater than that of KH<sub>2</sub>PO<sub>4</sub>, a wide band gap of 4.19 eV, and suitable birefringence (0.184@546.1 nm). This work contributes to the expanding research on chiral hybrid materials and underscores the potential of Sb<sup>3</sup>⁺-based systems for advanced optical applications.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00622"},"PeriodicalIF":3.5,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256941","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}
引用次数: 0
Oxidation of 5-Hydroxymethylfurfural Using Ru Supported Mg-Fe Hydrotalcite Materials. Ru负载Mg-Fe水滑石材料氧化5-羟甲基糠醛的研究
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-10 DOI: 10.1002/asia.202500505
Peringayi Aswin, Rahul Gautham, Padinjare Purayil Neethu, Venkatachalam Ganesh, Shunmugavel Saravanamurugan, Ayyamperumal Sakthivel
{"title":"Oxidation of 5-Hydroxymethylfurfural Using Ru Supported Mg-Fe Hydrotalcite Materials.","authors":"Peringayi Aswin, Rahul Gautham, Padinjare Purayil Neethu, Venkatachalam Ganesh, Shunmugavel Saravanamurugan, Ayyamperumal Sakthivel","doi":"10.1002/asia.202500505","DOIUrl":"https://doi.org/10.1002/asia.202500505","url":null,"abstract":"<p><p>A series of hydrotalcite-derived bimetallic catalysts were prepared, and Ru was loaded by wet impregnation. The catalyst retained a layered structure even after reduction, which was confirmed by Fourier-transform infrared spectroscopy and powder X-ray diffraction analyses. Among the prepared catalysts, ruthenium on magnesium-iron (Ru/MgFe) showed the best activity for 5-hydroxymethylfurfural oxidation under mild conditions in an aqueous medium (98.3% conversion at 120 °C, 3 h, and 30 bar O<sub>2</sub>), with the formation of 2, 5- furandicarboxylic acid (61.5%) as a major product along with 5-formyl 2-furancarboxylic acid and 2,5-diformylfuran as minor products. The highly dispersed metallic ruthenium on the surface of HT favored better activity. In addition, from the solvent studies, green solvent water showed higher activity than the other organic solvents. The activity of the catalyst reduced after the first cycle but regained upon treatment under a CO<sub>2</sub> atmosphere, which facilitated the regeneration of surface basicity and hence helped in the reactivation of the catalyst. Overall, this work demonstrates that finely dispersed ruthenium on MgFe hydrotalcite (MgFe-HT) facilitates the oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA). The Ru-dispersed MgFe-HT exhibits a high surface area (61.5 m<sup>2</sup>/g) along with surface basicity and redox properties, which contribute to a high HMF conversion (>99%) and a moderate FDCA yield (73.3%).</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00505"},"PeriodicalIF":3.5,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256954","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}
引用次数: 0
Self-Assembled Hybrid Nanomaterials from Terpyridine-Pt2⁺-Peptide Complexes for Synergistic NIR-Enhanced Oxidative Stress and Photothermal Therapy in Cancer. 三吡啶- pt2 + -肽配合物自组装杂化纳米材料用于nir增强肿瘤氧化应激和光热治疗。
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-10 DOI: 10.1002/asia.202500540
Cong Wang, Xin Tian, Xinming Li
{"title":"Self-Assembled Hybrid Nanomaterials from Terpyridine-Pt<sup>2</sup>⁺-Peptide Complexes for Synergistic NIR-Enhanced Oxidative Stress and Photothermal Therapy in Cancer.","authors":"Cong Wang, Xin Tian, Xinming Li","doi":"10.1002/asia.202500540","DOIUrl":"https://doi.org/10.1002/asia.202500540","url":null,"abstract":"<p><p>Development of hybrid nanomaterials incorporated with Pt<sup>2</sup>⁺ complexes with high biocompatibility and multimodal therapeutic activities represents a promising strategy for advancing cancer therapy. Due to the exceptional structural rigidity and metal coordination properties of terpyridine (tpy), we designed and synthesized a novel bioactive molecule with self-assembling abilities by conjugating a tpy moiety with a self-assembling peptide segment. Through noncovalent interactions and Pt<sup>2</sup>⁺-tpy coordination, this molecule undergoes supramolecular self-assembly to form hybrid nanomaterials with high biocompatibilities with normal cells. The resulting square-planar Pt<sup>2</sup>⁺-tpy complexes exhibit high binding affinities toward DNA via molecular intercalation and groove binding. Encapsulated Pt<sup>2</sup>⁺ ions within the nanomaterials also affords them the catalytic activity to create reactive oxygen species (•OH and O<sub>2</sub>•⁻) and deplete glutathione (GSH), resulting in oxidative cell death in cancer. Moreover, the coordination between the tpy moiety and Pt<sup>2</sup>⁺ endows the self-assembled nanomaterials with near-infrared absorption and photothermal heating properties, which enhances therapeutic outcomes by synergistically further augmenting ROS production and GSH scavenging, thereby amplifying apoptotic pathways. Therefore, the multifunctional properties confer highly selective cytotoxicity against cancer cells by inducing oxidative stress-mediated damage, while minimizing harm to normal cells.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00540"},"PeriodicalIF":3.5,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256957","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}
引用次数: 0
Construction of Highly Active Coral-Like Co/Ni-BTC Catalyst and Its Application in CO2-to-CO Conversion. 高活性类珊瑚Co/Ni-BTC催化剂的构建及其在CO2-to-CO转化中的应用
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-10 DOI: 10.1002/asia.202500121
Shan Weng, Xu-Jian Sun, Li-Zhi Zhang, Tian-Yu Zhang, Xue-Chuan Gao, Ning Zhu
{"title":"Construction of Highly Active Coral-Like Co/Ni-BTC Catalyst and Its Application in CO<sub>2</sub>-to-CO Conversion.","authors":"Shan Weng, Xu-Jian Sun, Li-Zhi Zhang, Tian-Yu Zhang, Xue-Chuan Gao, Ning Zhu","doi":"10.1002/asia.202500121","DOIUrl":"https://doi.org/10.1002/asia.202500121","url":null,"abstract":"<p><p>The photocatalytic reduction of CO<sub>2</sub> using solar energy presents an effective strategy for CO<sub>2</sub> mitigation and utilization. Metal-organic frameworks (MOFs), known for their exceptional CO<sub>2</sub> adsorption capacities and unique structural features, are emerging as novel photoactive materials for CO<sub>2</sub> reduction. In this study, rod-like, reticular, and ball-like Ni-BTC were synthesized using Ni<sup>2</sup>⁺ ions and 1,3,5-benzenetricarboxylic acid (H₃BTC). Among these, the rod-like Ni-BTC exhibited the narrowest optical band gaps and achieved an outstanding CO generation rate of 4.707 mmol/g/h. To further enhance the photocatalytic performance, Co<sup>2</sup>⁺ was partially substituted for Ni<sup>2</sup>⁺ in the rod-like Ni-BTC, resulting in the construction of bimetallic coral-like Co/Ni-BTC-x (x = 1, 2, 3). The incorporation of Co<sup>2</sup>⁺ facilitated the transformation of the larger rod-like Ni-BTC particles into a coral-like morphology with micro- and nanoscale dimensions. Compared to monometallic rod-like Ni-BTC, the bimetallic catalysts exhibited lower bandgap values, faster charge transfer rates, and superior photocatalytic CO₂ reduction activity. Notably, Co/Ni-BTC-2 achieved the highest CO generation rate of 7.392 mmol/g/h. This study demonstrates that the combination of morphological control and bimetallic approach is an effective strategy for enhancing the performance of MOF catalysts in the photochemical reduction of CO<sub>2</sub>.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00121"},"PeriodicalIF":3.5,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256946","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}
引用次数: 0
Promoting Effects of Zr on CO2 Hydrogenation over Porous Co/CexZr1-xO2-δ Catalyst. Zr对Co/ cezr1 - xo2 -δ多孔催化剂上CO2加氢的促进作用
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-10 DOI: 10.1002/asia.202500611
Hongmei Xie, Ling Jin, Shuang Chen, Jia Zeng, Guilin Zhou
{"title":"Promoting Effects of Zr on CO<sub>2</sub> Hydrogenation over Porous Co/Ce<sub>x</sub>Zr<sub>1-x</sub>O<sub>2-δ</sub> Catalyst.","authors":"Hongmei Xie, Ling Jin, Shuang Chen, Jia Zeng, Guilin Zhou","doi":"10.1002/asia.202500611","DOIUrl":"https://doi.org/10.1002/asia.202500611","url":null,"abstract":"<p><p>The porous Co/Ce<sub>x</sub>Zr<sub>1-x</sub>O<sub>2-δ</sub> catalysts were prepared by using a template agent-impregnation method. The physicochemical properties of the prepared catalysts were studied by using the XRD, BET, H<sub>2</sub>-TPR, and H<sub>2</sub>-TPD. The effects of the catalyst structure and Zr dosage on CO<sub>2</sub> hydrogenation performances were also investigated. The porous Ce<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> support prepared by the hard-template method has a large specific surface area and developed pore structure. With the increment of Zr dosage, the crystal phase structure of the prepared porous Ce<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> support transforms from cubic phase to tetragonal phase. The Co-Ce-O-Zr solid solution was formed in the corresponding catalyst by introducing an appropriate amount of Zr and significantly improved the reducibility of the Co<sub>3</sub>O<sub>4</sub>/Ce<sub>x</sub>Zr<sub>1-x</sub>O<sub>2</sub> precursors, by which the interaction between the active Co<sup>0</sup> and support was enhanced. At the same time, it is conducive to the formation of oxygen vacancies and highly dispersed Co<sup>0</sup> to promote the hydrogenation active sites to be formed in the corresponding catalyst, and thus promoting the CO<sub>2</sub> hydrogenation. The porous CoCe<sub>0.99</sub>Zr<sub>0.01</sub> catalyst with the Zr content of 1.0 mol% has the best catalytic performances. At 400 °C and atmospheric pressure, the CO<sub>2</sub> hydrogenation conversion and CH<sub>4</sub> selectivity on the CoCe<sub>0.99</sub>Zr<sub>0.01</sub> catalyst reached 59.8% and 94.7%, respectively.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00611"},"PeriodicalIF":3.5,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256956","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}
引用次数: 0
Alternative Approach to Avoid Drug Resistance: Polyhedral Inorganic and Metallomacrobicyclic 3D-Shaped Guests Strongly Binding to Allosteric Sites and/or Macromolecular Interfaces. 避免耐药的替代方法:多面体无机和金属大环3d形状客体与变构位点和/或大分子界面强结合。
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-10 DOI: 10.1002/asia.202401842
Yan Z Voloshin
{"title":"Alternative Approach to Avoid Drug Resistance: Polyhedral Inorganic and Metallomacrobicyclic 3D-Shaped Guests Strongly Binding to Allosteric Sites and/or Macromolecular Interfaces.","authors":"Yan Z Voloshin","doi":"10.1002/asia.202401842","DOIUrl":"https://doi.org/10.1002/asia.202401842","url":null,"abstract":"<p><p>The emergence of drug resistance is one of the global problems. Prospective approach for its solution is based on the development of new and improved pharmacological principles, including the use of allosteric inhibitors of biomacromolecules and the generation of those unfolded or misfolded. Allosteric sites as hosts can be sterically blocked by rigid 3D-shaped effectors as guests. Because host bioreceptors recognize only their external surface, the nature of abiotic and artificial 3D-molecular platforms plays no important role in the supramolecular host-guest binding. Another of their modus operandi is based on blocking a surface of supramolecular interactions between biomacromolecules to cause the appearance of misfolded macromolecular assemblies or their disaggregation. 3D-shaped polyhedral inorganic and metallocomplex molecules, the periphery of which is decorated with terminal biorelevant or vector group(s), seem to be promising antitumor and antiviral drug candidates, in the case of which the emergence of drug resistance is not observed.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e01842"},"PeriodicalIF":3.5,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256942","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}
引用次数: 0
Unraveling the Up-Conversion Mechanism Involved in the Intense Red Emission of a Mononuclear ErIII Complex. 揭示了单核ErIII配合物强红色发射的上转换机制。
IF 3.5 3区 化学
Chemistry - An Asian Journal Pub Date : 2025-06-10 DOI: 10.1002/asia.202500538
Yolimar Gil, Ricardo Costa de Santana, Leonnam Gotardo Meritzio, Andrés Vega, Pablo Fuentealba, Evgenia Spodine
{"title":"Unraveling the Up-Conversion Mechanism Involved in the Intense Red Emission of a Mononuclear Er<sup>III</sup> Complex.","authors":"Yolimar Gil, Ricardo Costa de Santana, Leonnam Gotardo Meritzio, Andrés Vega, Pablo Fuentealba, Evgenia Spodine","doi":"10.1002/asia.202500538","DOIUrl":"https://doi.org/10.1002/asia.202500538","url":null,"abstract":"<p><p>The scarcity of up-conversion (UC) luminescence studies involving Ln<sup>III</sup> molecular complexes mainly arises from the challenge of designing a coordination sphere that minimizes the interactions of the metal centers with high-energy oscillators. By using a combination of reported strategies to reduce these interactions, we synthesized and characterized a mononuclear complex, Er(tta)<sub>3</sub>(bipy) (tta: thenoyltrifluoroacetone; bipy: 2,2'-bipyridine) (Er-TB). Upon 980 nm laser excitation at room temperature, this complex gives rise to the challenging up-converted red (<sup>4</sup>F<sub>9/2</sub> →<sup>4</sup>I<sub>15/2</sub>) band, besides the bluish-green (<sup>2</sup>H<sub>11/2</sub> →<sup>4</sup>I<sub>15/2</sub>) and green (<sup>4</sup>S<sub>3/2</sub> →<sup>4</sup>I<sub>15/2</sub>) ones, as well as a downshifted NIR (<sup>4</sup>I<sub>13/2</sub> →<sup>4</sup>I<sub>15/2</sub>) emission. Interestingly, a high intensity of the red emission band and unprecedented luminescence lifetime values (448 µs for green and 775 µs for red emission) were achieved. A detailed analysis of the available data allows us to unravel the probable UC mechanism, which results in a dominant energy transfer up-conversion (ETU) mechanism via three-photon absorption, while a cross-relaxation (CR) process for the intense red emission is proposed. Besides affording a design strategy to achieve UC luminescence in Er<sup>III</sup> complexes, this study opens the door to the design of other lanthanide-based molecular UC systems, expanding the scope of these materials in the UC luminescence field.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00538"},"PeriodicalIF":3.5,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256962","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}
引用次数: 0
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