ACS Omega最新文献

{"title":"Rapid Point-of-Care Quantification of Urinary Tract Infection Biomarker Xanthine Oxidase","authors":"Ellen Stadler,&nbsp;Mark Sutton,&nbsp;Colin Brown,&nbsp;Wubbo de Boer,&nbsp;Rahaf Ammouri,&nbsp;Alison Holmes,&nbsp;Timothy M. Rawson,&nbsp;Danny O’Hare","doi":"10.1021/acsomega.6c10153","DOIUrl":"https://doi.org/10.1021/acsomega.6c10153","url":null,"abstract":"<p>Antimicrobial resistanceis a growing global health threat.Overuseof antimicrobial drugs is a main driver of resistance, with urinarytract infections (UTIs) a common indication for antibiotic use. Toimprove UTI treatment and reduce antimicrobial resistance, real-timediagnostic tools for monitoring the host immune response are needed.Xanthine oxidase (XO) is an enzyme that is elevated in UTIs and showspotential for sensitive and selective detection of infection. We developeda rapid and sensitive point-of-care electrochemical sensor for XOdetection by using a simple manufacturing approach. The sensor consistsof a disposable carbon electrode embedded in a capillary fill chamberdesigned for point-of-care sample collection. After urine collection,XO catalyzes its substrate while changing the oxidation state of asecondary electron acceptor. The magnitude and rate of this redoxshift reflects XO activity, enabling quantification of XO in urine.We demonstrate minimal intersensor variability of less than 5%, resultingin a calibration with an <em>R</em>² of 0.985 acrosseight individual sensors. The capillary fill device was optimizedto enable efficient substrate dissolution, reducing the time to resultfrom 10 min to just 2 min. This approach enables calibration-freedetection of XO in artificial and spiked human urine samples within2 min of sample collection in both artificial urine and spiked humanurine samples.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69381–69388"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375196","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":"New Citrinin and Coumarin Derivatives from a Marine-Derived Penicillium sp. RCDB006","authors":"Qun Li,&nbsp;Wu Ruan,&nbsp;Yangrong Zhao,&nbsp;Yihui Pan,&nbsp;Lingbin Lin,&nbsp;Wei Wu,&nbsp;Wenjia Huang,&nbsp;Xiaozhen Wang,&nbsp;Guangli Deng,&nbsp;Junfeng Wang,&nbsp;Cai-Guang Yang,&nbsp;Yi Chen,&nbsp;Ming-Wei Wang","doi":"10.1021/acsomega.6c05300","DOIUrl":"https://doi.org/10.1021/acsomega.6c05300","url":null,"abstract":"<p>One new citrinin derivative (<strong>1</strong>) and fournew coumarins(<strong>2</strong>–<strong>5</strong>), along with seven known compounds,were isolated from a deep-sea<strong>-</strong>derived fungus <em>Penicillium</em> sp. RCDB006 in the sediments of the DiamantinaFracture Zone, the second deepest trench in the Indian Ocean. Comprehensivespectroscopic analyses (NMR and HRESIMS) established the planar structures.Furthermore, the absolute configurations of compounds <strong>1</strong>–<strong>5</strong> were assigned by comparing experimental andcalculated ECD data, alongside X-ray crystallographic analysis. Thesecompounds were evaluated for antibacterial and antiproliferative activitiesagainst a panel of Gram-positive and Gram-negative bacteria, as wellas two cancer cell lines. Compound <strong>9</strong> exhibited modestbactericidal activity and also inhibited the growth of human acutemyeloid leukemia (MV4–11) and colorectal cancer (SW620) cellswith IC₅₀ values of 34.36 and 36.50 μM, respectively.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68389–68396"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375202","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":"Comparative Transcriptomic and Lipidomic Analysis of Amphotericin B-Susceptible and Resistant Clinical Isolates of Malassezia spp","authors":"Juan Camilo Galvis-Marín,&nbsp;Fredy Alexander Tabares-Villa,&nbsp;Augusto Zuluaga-Vélez,&nbsp;Paola Rojas-Estevez,&nbsp;Mónica P. Cala,&nbsp;Adriana Marcela Celis-Ramírez,&nbsp;Juan Carlos Sepúlveda-Arias","doi":"10.1021/acsomega.6c09344","DOIUrl":"https://doi.org/10.1021/acsomega.6c09344","url":null,"abstract":"<p><em>Malassezia</em> spp. are lipid-dependentskin commensalyeasts associated with superficial infections and fungemia. AmphotericinB remains a key treatment for systemic infections despite its toxicityand decreased susceptibility. This study characterized amphotericinB susceptibility profiles and identified transcriptomic and lipidomicsignatures of polyene resistance in clinical <em>Malassezia</em> isolates. Clinical isolates of <em>M</em>. <em>sympodialis</em> and <em>M</em>. <em>furfur</em>, and reference strains(CBS 7222 and CBS 1878), were evaluated using the modified M27-A3CLSI protocol for MICs and subinhibitory concentrations. One isolateper species was susceptible (MIC 0.5–2.0 μg/mL), whileanother was resistant (MIC ≥ 16 μg/mL). Transcriptomesgenerated by <em>Oxford Nanopore</em> sequencing were analyzedusing DESeq2 (|log2FC|&gt;2, <em>p</em> &lt; 0.05). Comparisonsbetween susceptible and resistant isolates revealed few DifferentiallyExpressed Genes (DEGs) that were not enriched for ergosterol biosynthesis.Interaction hubs indicated roles in nucleotide homeostasis, translation,chromatin regulation, and stress pathways. Lipidomic analysis by HPLC-QTOF-MSdetected approximately 200 lipid species, including 55 DifferentialLipid Molecules (DLMs) for <em>M</em>. <em>sympodialis</em> and 63 for <em>M</em>. <em>furfur</em>. Althoughglobal class abundances remained unchanged, resistant clinical isolatesshowed differences in the relative abundance of selected lipid species,with increased levels of long-chain fatty acids, diacylglycerols,and ceramides. Resistant <em>M</em>. <em>sympodialis</em> showed higher cholesterol levels. Integrated analysis separatedsusceptible and resistant groups, with DEGs–DLMs correlationshighlighting networks in membrane organization, stress tolerance,and metabolism. These findings suggest that amphotericin B resistancemay be associated with metabolic alterations and changes in membranelipid composition, supporting the use of multiomics markers for detectionand therapeutic strategies.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69193–69208"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375007","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":"Engineering pH-Responsive trans-Ferulic Acid/κ-Carrageenan Beads for On-Demand Micronutrient Delivery in Plants","authors":"Hitasha Vithalani,&nbsp;Subhojit Ghosh,&nbsp;Harshil Dave,&nbsp;Kashish Agrawal,&nbsp;Mukesh Dhanka,&nbsp;Subramanian Sankaranarayanan","doi":"10.1021/acsomega.6c01871","DOIUrl":"https://doi.org/10.1021/acsomega.6c01871","url":null,"abstract":"<p>Micronutrient deficiencies in soils are a critical challengeinagriculture, particularly in acidic soil environments where nutrientavailability is strongly limited by fixation, leaching, and alteredmetal speciation. These constraints contribute to inefficient nutrientuptake and reduced crop yields. Conventional micronutrient supplementationmethods, such as bulk fertilizer application and foliar sprays, areoften inefficient, environmentally harmful, and unsustainable, underscoringthe need for smarter delivery systems tailored to soil pH conditions.In this study, we developed biodegradable, pH-responsive microbeadsfabricated from κ-carrageenan (κ-CG), sulphated polysaccharidederrived from algal biomass and trans-ferulic acid (TFA), a naturallyoccurring phenolic antioxidant with radical-scavenging activity. Theκ-carrageenan/TFA-based microbeads, designated as κ-TF-B,were synthesized through an eco-friendly process and optimized forsize, morphology, and stability. Characterization confirmed the successfulincorporation of the constituent functional groups, while swelling,degradation, and release studies demonstrated pH-responsive deliveryof essential micronutrients under acidic conditions (pH 4.0), mimickingacidic soil environments. The optimized κ-TF-B microbeads exhibitedenhanced swelling at acidic pH and sustained micronutrient releasethroughout the study period. In addition, the microbeads showed strongantioxidant activity, with a radical-scavenging efficiency of 93.4%,attributed to the presence of TFA. For plant applications, κ-TF-All,defined as the κ-TF-B microbead formulation loaded with allfour essential micronutrients (Mn²⁺, Zn²⁺, Cu²⁺, and Fe²⁺), was evaluated in soil and plant growthassays. κ-TF-All improved micronutrient availability and promotedplant growth, resulting in larger leaf area and a 3.3-fold increasein chlorophyll content in <em>Arabidopsis thaliana</em> compared with the negative control, without observable phytotoxiceffects. Collectively, these findings demonstrate the potential ofκ-TF-All microbeads as an eco-friendly and pH-responsive platformfor sustainable micronutrient delivery and improved plant growth undermicronutrient-limited conditions.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68185–68197"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375065","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":"Recent Advances in Niobium-Mediated Organic Synthesis: Catalytic Modes, Reactivity, Limitations, and Biomass Valorization","authors":"Vitor F. Moreno,&nbsp;Maria L. C. D. Tomás,&nbsp;José H. Faleiro,&nbsp;Lucas M. Martins,&nbsp;Giovanny C. dos Santos,&nbsp;Adilson Y. Furuse,&nbsp;Luiz C. da Silva-Filho,&nbsp;Bruno H. S. T. da Silva","doi":"10.1021/acsomega.6c05715","DOIUrl":"https://doi.org/10.1021/acsomega.6c05715","url":null,"abstract":"<p>This review criticallyexamines the use of niobium-based compoundsin organic synthesis and biomass valorization reported over the pastdecade. The discussion is organized by catalyst/promoter class (NbCl₅, Nb₂O₅, ammonium niobium oxalate, andmodified niobium materials), followed by an analysis of their applicationsin biomass valorization and a critical assessment of their practicallimitations. Using a systematic search strategy, this review establishesexplicit quantitative criteria to distinguish genuine catalytic performancefrom stoichiometric promoter-mediated pathways. Key performance parameters,including catalyst loadings, medium effects, recyclability, and comparativebenchmarking against relevant non-niobium alternatives, are systematicallyassessed. In addition, experimentally demonstrated mechanisms arerigorously distinguished from proposed mechanistic pathways. The analysisreveals that niobium systems are most effective when strong substrateactivation is combined with water tolerance and ease of recovery,as demonstrated in Nb₂O₅-catalyzed transformations.However, NbCl₅-mediated reactions frequently rely on superstoichiometricloadings and stringent conditions, severely limiting their practicalefficiency. Crucially, a targeted quantitative screening of the literatureidentifies substantial reporting gaps regarding industrial relevance,continuous processing, leaching and deactivation, and standardizedgreen chemistry metrics (e.g., E-factor). Overall, while heterogeneousniobium materials with tunable Lewis/Brønsted acidity emergeas promising platforms, future progress will require a shift fromempirical optimization toward computationally guided catalyst design,standardized sustainability evaluations, and process-oriented validationunder scalable conditions.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68050–68073"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375048","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":"Coupling Characteristics and Sensitivity Differences of Coal Porosity and Permeability with Stress in Different Wellfields of Fukang Mining Area","authors":"Bing Bai,&nbsp;Jienan Pan,&nbsp;Zhenzhi Wang,&nbsp;Yidong Li,&nbsp;Meng Li,&nbsp;Xuetian Du,&nbsp;Nannan Cheng","doi":"10.1021/acsomega.6c09182","DOIUrl":"https://doi.org/10.1021/acsomega.6c09182","url":null,"abstract":"<p>Quantifying how coal porosity and permeability vary witheffectivestress is essential for forecasting coalbed methane (CBM) deliverability,yet the coupled stress response of low-rank coals and its variationamong wellfields remain poorly constrained. Nine cores from threewellfields of the Fukang mining area─Kuangou (KG), Wudong (WD),and Donggou (DG)─were tested under stepwise hydrostatic loadingof 2.07–15.86 MPa while porosity and permeability were measuredsimultaneously. Both properties decrease exponentially with stress,but permeability declines far more strongly: at maximum loading, theporosity damage ratio ranges from 15.9% to 69.55%, whereas the permeabilitydamage ratio reaches 82.2–96.7%, and permeability sensitivityacross wellfields follows DG ≈ WD &gt; KG. A porosity–permeabilityratio (e = φ/k) and a relative sensitivity parameter (R) wereintroduced to quantify the storage–seepage mismatch, with erising continuously along the loading path. Fracture density, aperture,pore-throat connectivity, and mineral infilling jointly govern theheterogeneous response. The results provide quantitative criteriafor staged depressurization and fracturing design in low-rank CBMdevelopment.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69098–69116"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375133","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":"Chirality as a Structural Degree of Freedom in Halide Perovskites","authors":"Suhas K. T.,&nbsp;Ranjani Viswanatha","doi":"10.1021/acsomega.6c10705","DOIUrl":"https://doi.org/10.1021/acsomega.6c10705","url":null,"abstract":"<p>Chirality in halide perovskites has traditionally beenassociatedwith the incorporation of intrinsically chiral molecular components.Here, we develop a broader perspective in which chirality can emergefrom the collective structural organization of an otherwise achiralinorganic lattice. We distinguish the structural origins of chirality,including molecular or ligand-mediated interactions, cooperative latticedistortions, surfaces and interfaces, and dynamic structural fluctuations,from the thermodynamic and structural parameters that control thesestates, including strain, dimensionality, confinement, temperature,pressure, and composition. Particular emphasis is placed on distinguishingstructural distortion and inversion symmetry breaking from genuinechirality, which requires the absence of all improper symmetry operationsand sufficient spatial correlation of the handed structural state.Two halide perovskite systems, Cs₂PbI₂Cl₂ nanoplatelets and CsPbBr₃ nanorods, illustratecomplementary examples in which structural perturbations are associatedwith pronounced chiroptical responses. We further outline experimentalcriteria for establishing structural chirality and discuss opportunitiesfor selecting, switching, and coupling handed structural states tooptical, electronic, spin, and magnetic functionalities.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"67974–67986"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375106","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":"Enhancing Response Surface Methodology for Bioprocesses Development Using Interpretable Machine Learning","authors":"Juan Federico Herrera-Ruiz,&nbsp;Juan Camilo Castaño-Sánchez,&nbsp;Oscar Andrés Prado-Rubio","doi":"10.1021/acsomega.6c09217","DOIUrl":"https://doi.org/10.1021/acsomega.6c09217","url":null,"abstract":"<p>Response surfacemethodology (RSM) has been a cornerstone for experimentalbioprocess optimization, yet its reliance on polynomial equationsoften fails to capture complex nonlinearities and requires extensiveexperimental data to attempt capturing them. This study evaluatesthe enhancement of RSM through machine learning (ML) techniques, specificallyGaussian Processes and Support Vector Machines, across three biologicalsystems: succinic acid fermentation, biobutanol production, and continuousethanol cultivation. To mitigate the “black-box” natureof ML, explainability measures such as Mutual Information (MI) andLocal Interpretable Model-agnostic Explanations (LIME) were integratedto assess feature importance and ensure biological relevance. Resultsdemonstrate that ML models consistently outperform traditional polynomialsin predictive accuracy, even when having access to less experimentaldata for calibration and a reduced space of features, particularlyon validation data sets where errors were significantly reduced (e.g.,reaching MAPE lower than 1% in simulated experimental scenarios).Furthermore, the application of Model-Based Design of Experimentsusing Latin Hypercube Designs achieved optimal conditions with upto 50% fewer experimental runs compared to traditional factorial approaches.These findings suggest that coupling ML with explainability toolsimproves the reliability of finding optimal conditions for bioprocessdevelopment while also significantly enhancing operational efficiencyby reducing experimental runs, time, and costs.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69154–69166"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375128","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":"Effect of Ga Doping on Microwave-Assisted Synthesized TiO2 Nanoparticles and their Photovoltaic Performance as DSSC Photoanodes","authors":"J. Arriola-Oliva,&nbsp;E. Regalado-Pérez,&nbsp;U. Pal,&nbsp;J. Villanueva-Cab","doi":"10.1021/acsomega.6c06567","DOIUrl":"https://doi.org/10.1021/acsomega.6c06567","url":null,"abstract":"<p>Undoped and Ga-doped (1–16% nominal) anatase TiO₂ nanoparticles were synthesized using a rapid microwave-assistedmethod and employed as photoanodes in dye-sensitized solar cells (DSSCs)sensitized with Z907 dye. Structural, morphological, optical, andtextural characterizations (XRD, Raman, SEM, DRS, BET, UV–vis,and FTIR) revealed systematic Ga-induced modifications of the anataseTiO₂ structure and progressive reduction in crystalliteand particle sizes, together with a significant increase in specificsurface area. Moderate nominal Ga content enhanced dye adsorptionand visible-light harvesting without substantially modifying the TiO₂ bandgap. Photovoltaic performance, evaluated by current density–voltage(J-V) and open-circuit voltage decay (OCVD) measurements, showed thatthe photoanode fabricated with 4% nominal Ga content performed best,achieving an approximately 60% enhancement in power conversion efficiencycompared with undoped TiO₂ devices. The improved photovoltaicresponse is attributed to enhanced light harvesting, improved chargeinjection, and reduced recombination losses, driven by favorable modificationof the trap-state distribution and interfacial charge-transfer processes.In contrast, higher nominal Ga contents increased the distributionof deep trap states and inefficient semiconductor-dye coupling, reducingdevice performance. Stability tests conducted over 30 days confirmedthat TiO₂-based photoanodes with a nominal 4% Ga contentexhibited the best long-term photovoltaic stability. The findingsdemonstrate that controlled Ga doping is an effective strategy fortailoring the physicochemical and electronic properties of TiO₂ photoanodes and improving DSSC performance.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"68551–68564"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375130","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":"Synthesis and Photophysical Properties of Electroactive Apocynin Derivatives as Potential Luminogens and Cellular Bioimaging Agents","authors":"Camila García-Aquite,&nbsp;Luis Illicachi,&nbsp;Joel José Montalvo Acosta,&nbsp;Alejandro Ortiz,&nbsp;Homero G. San-Juan-Vergara,&nbsp;Juan D. Rodríguez,&nbsp;Walter A. Martínez-De-La-Rosa,&nbsp;Daniel Insuasty,&nbsp;Alberto Insuasty","doi":"10.1021/acsomega.6c09229","DOIUrl":"https://doi.org/10.1021/acsomega.6c09229","url":null,"abstract":"<p>This study describesthe synthesis, photophysical characterization,and bioimaging properties of a series of chalcones derived from apocynin,functionalized with electroactive groups such as phenyldimethylamine(<strong>1</strong>), triphenylamine (<strong>2</strong>), tetraphenylethylene(<strong>3</strong>), and pyrene (<strong>4</strong>). These molecules featureddonor−π–acceptor–donor (D−π–A–D)type architectures designed to promote intramolecular charge transfer(ICT) processes and notable emissive properties. Compounds <strong>1</strong> and <strong>2</strong> exhibited a marked aggregation-caused quenching(ACQ) behavior in THF/water mixtures while compounds <strong>3</strong> and <strong>4</strong> showed a marked enhancement of emission uponaggregation (AIE), associated with the restriction of intramolecularmotions in the aggregated state. DFT/TD-DFT calculations and electrochemicalstudies revealed good electronic communications between the electroactiveunits. Cellular bioimaging studies performed on compounds <strong>1–4</strong> showed that only compounds <strong>1</strong>, <strong>2</strong>, and <strong>4</strong> are good fluorescent agents exhibiting notable cellularpermeability in HEp-2 carcinoma cells. Overall, these findings demonstratethat apocynin α,β-unsaturated systems constitute versatileluminescent platforms with tunable photophysical properties, suitablefor applications in cellular bioimaging and the development of remarkablefluorescent materials.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 44","pages":"69127–69142"},"PeriodicalIF":5.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149375088","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}