Francesco Rossi , Gianmarco Stati , Thithawat Trakoolwilaiwan , Nguyen Thi Kim Thanh , Silvia Sancilio , Roberta Di Pietro
{"title":"Preliminary study on ex vivo efficacy of curcumin‑silver nanoparticles as a treatment of human pterygium-derived keratinocytes","authors":"Francesco Rossi , Gianmarco Stati , Thithawat Trakoolwilaiwan , Nguyen Thi Kim Thanh , Silvia Sancilio , Roberta Di Pietro","doi":"10.1016/j.ica.2025.122826","DOIUrl":"10.1016/j.ica.2025.122826","url":null,"abstract":"<div><div>Pterygium is a progressive disease of the human eye in which an invasive growth arises from the sub-conjunctival tissue and extends onto the cornea, eventually reaching the pupil and compromising visual function. This disease is commonly diffused in human population living in the tropical region with an average incidence of 7 % of cases in India, Singapore and China and peaks of 30 % in Japan. The available surgical or pharmacological treatments are only partially successful in stopping the disease and imply a great risk of aggressive relapse. The proposed inorganic nanoparticles conjugated with curcumin have demonstrably been able to reduce of 30 % ± 0.2 % the vitality of pterygium keratinocytes extracted by affected patients, thus offering an alternative therapeutic option for the containment of this human disease.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122826"},"PeriodicalIF":2.7,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365987","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":"Photodynamic antibacterial therapy by metal complex mediators: A new promise for eliminating drug-Resistant infectious microorganisms","authors":"Afrasiyab , Ruiwen Zhou , Khadija Raziq , Ting Xue , Dongdong Sun","doi":"10.1016/j.ica.2025.122818","DOIUrl":"10.1016/j.ica.2025.122818","url":null,"abstract":"<div><div>Photodynamic treatment (PDT), a minimally invasive therapeutic technique, produces reactive oxygen species (ROS) that particularly damage cells by combining light energy with a photosensitizing agent. Although PDT was initially developed for oncology, it has demonstrated significant promise in the treatment of drug-resistant bacterial infections. The proliferation of drug-resistant bacteria poses a severe threat to public health, necessitating the development of novel therapeutic strategies. With the lack of new antibacterial drugs (e.g., antibiotics) coming to the clinics, efforts have focused on creating substitute methods. One such method is antibacterial photodynamic therapy (aPDT), a light-, oxygen-, and non-toxic photosensitizer dye-based system that assists in generating cytotoxic reactive oxygen species. Certain metal complexes, such as those of platinum and copper (II), have been identified to be promising as photosensitizers due to their unique electronic structures. However, copper complexes, while interesting, typically display ROS formation under specific conditions and are not effective under all PDT treatments. With emphasis on metal complex utilization in antimicrobial therapy, this study describes the principles, clinical application, and history of photodynamic therapy (PDT) by destroying the membranes that surround bacterial cells and inhibiting enzymatic. These metal-based photosensitizers present a new and efficient way to combat antibiotic resistance by triggering oxidative stress and triggering new processes. An important development in antimicrobial therapy is using metal complexes in PDT regimens, which promise increased efficacy and selectivity. A nanomaterial-based photodynamic antibacterial synergistic method is described at length relative to the lethal potential of bacteria. A PDT antibacterial multiple synergistic method using a nanomaterial-based approach augmented with a suitably increased temperature diminishes cellular activity and increases cell sensitivity towards ROS, allowing for effortless inactivation. Drug-resistant bacterial infections are a global concern that will require the focus of future research to optimize these complexes for clinical application.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122818"},"PeriodicalIF":2.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365986","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}
Ling Chen, Xue Gao, Yafei Li, Mengxiang Wu, Yahong Li
{"title":"Zinc compounds supported by β-enaminone and β-diketiminate ligands: syntheses, characterization and catalytic behaviors toward cross-coupling of B2Pin2 with aryl iodides","authors":"Ling Chen, Xue Gao, Yafei Li, Mengxiang Wu, Yahong Li","doi":"10.1016/j.ica.2025.122825","DOIUrl":"10.1016/j.ica.2025.122825","url":null,"abstract":"<div><div>The application of two <em>β</em>-enaminone ligands and one <em>β</em>-diketiminate ligand in the preparation of zinc complexes is reported. Three dinuclear zinc compounds [Zn<sub>2</sub>(L<sup>1</sup>)<sub>2</sub>Et<sub>2</sub>] (<strong>1</strong>), [Zn<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>Et<sub>2</sub>] (<strong>2</strong>) and [Zn<sub>2</sub>(L<sup>3</sup>)Et<sub>2</sub>] (<strong>3</strong>) were synthesized, and the catalytic potential of <strong>1</strong>–<strong>3</strong> for the cross-coupling of B<sub>2</sub>Pin<sub>2</sub> with aryl iodides was investigated (HL<sup>1</sup> = 4-(mesitylamino)pent-3-en-2-one, HL<sup>2</sup> = 4-((2,4,6-tricyclopentyl- phenyl)amino)pent-3-en-2-one, H<sub>2</sub>L<sup>3</sup> = <em>N</em>,<em>N</em>′-((ethane-1,2-diylbis(azanylylidene)) bis(pent-2-en-2-yl-4-ylidene))bis(2,4,6-tricyclopentylaniline)). The purpose of this work was to examine the influence of changes in the backbones of the ligands on the catalytic properties of <strong>1</strong>–<strong>3</strong>. The catalytic activity of <strong>3</strong> was the highest, revealing that the steric hindrance of the ligands coordinating with zinc ions affects the catalytic efficiency. The borylation of aryl iodides catalyzed by <strong>3</strong> can occur under mild conditions, and a series of substrates with different functional groups can be borylated smoothly in satisfactory yields.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122825"},"PeriodicalIF":2.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480637","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":"Luminescent dinuclear platinum(II) complexes featuring rigidly linked Pt(N'CNO) units: N′ = isoquinoline versus pyridine","authors":"Amit Sil, Emma V. Puttock, J.A. Gareth Williams","doi":"10.1016/j.ica.2025.122823","DOIUrl":"10.1016/j.ica.2025.122823","url":null,"abstract":"<div><div>Luminescent, square-planar platinum(II) complexes often undergo intermolecular interfacial interactions at elevated concentrations, sometimes leading to low-energy emission from excimers or aggregates and thus offering an attractive route to more efficient red- and NIR-emitting phosphors. In this study, we describe two new compounds, L<sup>py</sup>Pt<sub>2</sub> and L<sup>iq</sup>Pt<sub>2</sub>, in which two Pt(<em>NCNO</em>) units are appended onto a xanthene scaffold to favour the intramolecular formation of such states. The Pt(<em>NCNO</em>) units are based on mononuclear Pt(II) complexes known to be highly emissive, namely those of 5,5-dibutyl-2-(3-(pyridin-2-yl)-phenyl-5H-indeno[1,2-b]pyridine-9-olate in the case of L<sup>py</sup>Pt<sub>2</sub>, and its isoquinolin-3-yl analogue for L<sup>iq</sup>Pt<sub>2</sub>. X-ray diffraction reveals an <em>anti</em> arrangement of the Pt(<em>NCNO</em>) units relative to one another. The emission spectrum of L<sup>py</sup>Pt<sub>2</sub> in solution is dominated by a low-energy band centred at 660 nm, with weaker bands at shorter wavelengths where the corresponding mononuclear complex emits. The former is attributed to excimers that form intramolecularly, but the process is inhibited in a polystyrene host at room temperature, and in a glass at 77 K. Conversely, L<sup>iq</sup>Pt<sub>2</sub> displays no such excimer emission in solution, probably due to a less flexible structure impeding the attainment of the necessary geometry at room temperature. In polystyrene films at loadings >25 % by mass, both complexes begin to show low-energy emission from intermolecular excimers or aggregates. In neat films of L<sup>iq</sup>Pt<sub>2</sub>, the low-energy band dominates the spectrum, with a remarkably high quantum yield of around 20 %, an order of magnitude higher than L<sup>py</sup>Pt<sub>2</sub>.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122823"},"PeriodicalIF":2.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329807","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}
Mehdi Fallah-Mehrjardi , Hadi Kargar , Muhammad Ashfaq , Khurram Shahzad Munawar
{"title":"A review of bidentate NN and NO Schiff base ligands and metal complexes","authors":"Mehdi Fallah-Mehrjardi , Hadi Kargar , Muhammad Ashfaq , Khurram Shahzad Munawar","doi":"10.1016/j.ica.2025.122822","DOIUrl":"10.1016/j.ica.2025.122822","url":null,"abstract":"<div><div>The article reviews our studies on the synthesis, structural elucidation, spectral properties, and applications of bidentate NN and NO Schiff base ligands and their corresponding metal complexes. Upon coordination, Schiff base complexes with distinct geometries like tetrahedral, square planar, or distorted trigonal planar were synthesized as confirmed by SC-XRD and spectroscopic techniques (FT-IR, NMR). Some polymeric copper (I) complexes exhibit exceptional catalytic efficiency in the synthesis of N-heterocycles (<em>e.g.</em>, tetrahydropyrimidines and 1,2,3-triazoles), achieving high yields under mild conditions. The chelated Schiff base ligands display superior bacteriostatic effects against both Gram-positive (<em>S. aureus</em>) and Gram-negative (<em>E. coli</em>) pathogens compared to non-coordinated ligands, as quantified through standardized MIC/MBC assays. Overall, this review highlights the versatility of Schiff base metal complexes in antimicrobial applications and catalysis, emphasizing their structural tunability and functional potential in coordination chemistry.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122822"},"PeriodicalIF":2.7,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480636","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}
İbrahim Kitmür , Seda Mesci , Ebru Batı Ay , Tuba Yıldırım , Gönül Yenilmez Çiftçi
{"title":"The first 6-hydroxyflavone and 7-hydroxyflavone decorated monospiro cyclotriphosphazene compounds: Synthesis, characterization and biological activity studies","authors":"İbrahim Kitmür , Seda Mesci , Ebru Batı Ay , Tuba Yıldırım , Gönül Yenilmez Çiftçi","doi":"10.1016/j.ica.2025.122812","DOIUrl":"10.1016/j.ica.2025.122812","url":null,"abstract":"<div><div>The fight against cancer requires a versatile and more effective approach to cancer treatments that combines the design of new drugs, targeted therapies, and a deeper understanding of the tumour microenvironment. Research on hydroxyflavones and cyclotriphosphazene underscores their importance in cancer research, showcasing their diverse pharmacological activities ranging from anti-cancer properties to potential applications. In our study, the first 6- and 7-hydroxyflavone decorated monospiro cyclotriphosphazenes were synthesized and analysed by elemental analysis, MALDI-TOF MS, <sup>1</sup>H, <sup>13</sup>C, <sup>31</sup>P NMR and FT-IR spectroscopy. Furthermore, the antioxidant activities of the compounds were evaluated using DPPH radical scavenging assay, total phenolic content, and total flavonoid content analyses. Additionally, the cytotoxic effects of the compounds were assessed in MCF-7 (breast adenocarcinoma) and MCF-12A (non-tumorigenic mammary epithelial) cell lines using the WST-8 cell viability assay. Hydroxyflavone-derived cyclotriphosphazene compounds showed selective antioxidant (DPPH: %93.48, total phenolic: 91.74, and total flavonoid: 87.20) activities. The cytotoxicity results of the compounds in MCF-7 (human breast cancer) cells using the WST-8 method showed a viability% activity of 54.13 (IC<sub>50</sub>:27.10), providing meaningful and effective data for anticancer studies. These findings collectively emphasize the significant role of hydroxyflavone decorated cyclotriphosphazenes in advancing cancer treatment strategies.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122812"},"PeriodicalIF":2.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314200","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":"Tagging of collagen with red emissive Ru(II) complex for biological application","authors":"P. Anithabanu , S. Sneha , V.G. Vaidyanathan","doi":"10.1016/j.ica.2025.122819","DOIUrl":"10.1016/j.ica.2025.122819","url":null,"abstract":"<div><div>Labelling of biomolecules have attracted more attention due to its ability to study the biological events that occurs inside the cell. The labelling of the biomolecules such as proteins and DNA have often been limited with organic fluorophore/dyes. The understanding of protein function varies from seconds to days and organic fluorophores such as fluorescein, rhodamine and cyanine dyes that undergoes photobleaching and might not be a suitable candidate for the studies. On the other hand, phosphorescent metal complexes have been used as probe for labelling the globular proteins such as bovine serum albumin, carbonic anhydrase, IgG and lysozyme, etc. In this study, we have explored the use of red emitting Ru(II) polypyridyl complex as probe for tagging the fibrillar protein i.e. collagen. The conjugation of Ru(II) complex with collagen was carried out using EDC/NHS procedure. By conjugating the Ru(II) complex, collagen did not lose its triple helical nature as evidenced from the CD spectra. Digestion of Ru-collagen using collagenase increased the emission intensity in similar line with commercially available FITC-collagen. Using microscale thermophoresis, the binding affinity (<em>K</em><sub>d</sub>) of polyphenols to Ru modified collagen was determined and found to be in the order: Catechin>Quercetin>Gallic acid and is similar to the binding affinity of native collagen which clearly indicates the Ru conjugation did not impact the binding of the polyphenol. Further, the binding affinity of collagenase to Ru-collagen was determined and exhibit the strong binding compared to native collagen. The present data clearly demonstrates that red emissive nature of Ru-collagen offers a potential solution for imaging as well as substrate for determining the binding affinity of small molecule directly either through fluorescence or microscale thermophoresis technique.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122819"},"PeriodicalIF":2.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314201","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}
Jacob U. Abulkhaev , Artem V. Semenov , Daniil M. Ivanov , Irina I. Fedorova , Eugene V. Ignatov , Ekaterina A. Radiush , Sergey V. Baykov , Nadezhda A. Bokach
{"title":"Deprotonated 5-acetylmethyl-1,2,4-oxadiazoles as bidentate chelating ligands for the synthesis of palladium(II) and copper(II) complexes","authors":"Jacob U. Abulkhaev , Artem V. Semenov , Daniil M. Ivanov , Irina I. Fedorova , Eugene V. Ignatov , Ekaterina A. Radiush , Sergey V. Baykov , Nadezhda A. Bokach","doi":"10.1016/j.ica.2025.122817","DOIUrl":"10.1016/j.ica.2025.122817","url":null,"abstract":"<div><div>Neutral <em>bis-</em>chelate complexes M(L)<sub>2</sub> (M = Pd(II); LH = 3-R-5-acetylmethyl-1,2,4-oxadiazole: R = Me <strong>1a</strong>, Et <strong>1b</strong>, Bn <strong>1c</strong>, Ph <strong>1d</strong>, 4-Tol <strong>1e</strong>; M = Cu(II); LH = 3-R-5-acetylmethyl-1,2,4-oxadiazole: R = Me <strong>2a</strong>, Et <strong>2b</strong>, Bn <strong>2c</strong>, Ph <strong>2d</strong>, 4-Tol <strong>2e</strong>) were synthesized in moderate to good yields (61–87%) by the reaction of the corresponding 5-acetylmethyl-1,2,4-oxadiazole with Na<sub>2</sub>[PdCl<sub>4</sub>] or CuCl<sub>2</sub>·2H<sub>2</sub>O in the presence of sodium <em>tert</em>-butoxide as a base. The complexes were characterized by IR (<strong>1a</strong>–<strong>e</strong> and <strong>2a</strong>–<strong>e</strong>) and <sup>1</sup>H and <sup>13</sup>C{<sup>1</sup>H} NMR spectroscopy (<strong>1a</strong>–<strong>e</strong>), electrospray ionization high-resolution mass spectrometry (ESI-HRMS; <strong>1a</strong>–<strong>e</strong> and <strong>2a</strong>–<strong>e</strong>), and powder X-ray diffraction analysis (<strong>2a</strong>–<strong>e</strong>). Compounds <strong>1a</strong>–<strong>e</strong> and <strong>2a</strong>–<strong>e</strong> are also characterized by single-crystal X-ray diffraction data. Their coordination geometries and supramolecular organization differ significantly depending on the nature of the metal center and the substituent R.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122817"},"PeriodicalIF":2.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281005","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}
S.G. Jebastin Andrews , S. Michlin Ruphina Maragatham , S. Benita Jeba Silviya , D. Ruba Gnanaselvam , J. Winfred Jebaraj , P. Jeslin Kanaga Inba , Chithiraivel Balakrishnan
{"title":"Cyclen-pyrene coupled fluorescent Indicator for selective detection of Sn2+ ions and its applications to bioimaging","authors":"S.G. Jebastin Andrews , S. Michlin Ruphina Maragatham , S. Benita Jeba Silviya , D. Ruba Gnanaselvam , J. Winfred Jebaraj , P. Jeslin Kanaga Inba , Chithiraivel Balakrishnan","doi":"10.1016/j.ica.2025.122820","DOIUrl":"10.1016/j.ica.2025.122820","url":null,"abstract":"<div><div>A fluorescent probe based on cyclen-pyrene, named 2,2′-(7,10-bis(pyren-1-ylmethyl)-1,4,7,10-tetraazacyclododecane-1,4-diyl)diacetic acid (L), was effectively developed for the sensitive and selective detection of Sn<sup>2+</sup> in ethanol/HEPES buffer (5 mM, pH 7.2, 1,9 <em>v</em>/v) solutions. The probe L shows a strong preference for the Sn<sup>2+</sup> ion in the presence of other biologically relevant metal ions. Upon binding with Sn<sup>2+</sup>, L undergoes the CHEF effect and suppresses the PET process, resulting in a significant turn-on emission enhancement. The detection limit for Sn<sup>2+</sup> was 7.71 nM, which meets the WHO's permissible concentration for Sn<sup>2+</sup> in drinking water. The recognition mechanism of the L.Sn<sup>2+</sup> complex was verified through FT-IR analysis, <sup>1</sup>H NMR titration, and DFT studies. Furthermore, ESI-MS spectral analysis confirmed a 1:1 binding stoichiometry. L has also been used to detect Sn<sup>2+</sup> ions in real samples and to create a paper-based test kit for efficient monitoring of Sn<sup>2+</sup> ions. Moreover, bioimaging studies demonstrated that L serves as a useful fluorescent marker for detecting Sn<sup>2+</sup> in living cells and zebrafish.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122820"},"PeriodicalIF":2.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291030","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}
Anton A. Petunin, Taisiya S. Sukhikh, Michael A. Shestopalov, Alexey S. Berezin, Yuri A. Vorotnikov
{"title":"Expanding iodine-mediated ligand substitution: Synthesis and characterization of cationic iodide Mo6 clusters with NMP and DMF","authors":"Anton A. Petunin, Taisiya S. Sukhikh, Michael A. Shestopalov, Alexey S. Berezin, Yuri A. Vorotnikov","doi":"10.1016/j.ica.2025.122815","DOIUrl":"10.1016/j.ica.2025.122815","url":null,"abstract":"<div><div>Octahedral molybdenum iodide clusters of the general formula [Mo<sub>6</sub>I<sub>8</sub>L<sub>6</sub>]<sup>n</sup> have attracted significant attention due to their advantageous optical and physicochemical properties. In this study, we expand our previously developed iodine-mediated synthetic approach to include new coordinating solvents, <em>N</em>-methyl-2-pyrrolidone (NMP) and <em>N,N</em>-dimethylformamide (DMF), yielding novel cationic cluster complexes [Mo<sub>6</sub>I<sub>8</sub>L<sub>6</sub>](I<sub>3</sub>)<sub>4</sub> (L = NMP (<strong>1</strong>), DMF (<strong>2</strong>)) with high yields (∽80 %). Since the obtained triiodide salts possess no luminescence due to quenching by I<sub>3</sub><sup>−</sup> ions, they were further transformed into hybrid salts [Mo<sub>6</sub>I<sub>8</sub>L<sub>6</sub>][W<sub>6</sub>O<sub>19</sub>]<sub>2</sub> (L = NMP (<strong>3</strong>), DMF (<strong>4</strong>)) to investigate the intrinsic absorption and emission properties of the clusters. The resulting compounds exhibit broad absorption up to ∽700 nm (E<sub>g</sub> = 1.75 eV) as well as bright red luminescence with quantum yields of ∽30 % and ∽100 μs lifetimes.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"587 ","pages":"Article 122815"},"PeriodicalIF":2.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288757","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}