ACS Applied Nano Materials最新文献

{"title":"Structure, Properties, and Dispersibility of OH-Functionalized Carbon Nanothreads: Implications for Nanocomposite Processing","authors":"Wagner A. Müller,&nbsp;, ,&nbsp;Katianna Hugue,&nbsp;, ,&nbsp;Suelen L. S. Cardoso,&nbsp;, ,&nbsp;Matheus T. Novoa,&nbsp;, and ,&nbsp;Andre R. Muniz*,&nbsp;","doi":"10.1021/acsanm.5c03378","DOIUrl":"https://doi.org/10.1021/acsanm.5c03378","url":null,"abstract":"<p >Carbon nanothreads (NTHs) are one-dimensional materials formed from controlled compression of aromatic molecules, composed of carbon, hydrogen, and other heteroatoms present in the molecular precursors. Their postsynthesis chemical functionalization can modify and enhance some of their properties, enabling different functionalities and making them particularly suited for use in composites. In this work, we use a comprehensive set of density functional theory calculations and classical molecular dynamics simulations to analyze the structure and properties of NTHs functionalized with hydroxyl (−OH) groups, obtained through hydrolysis of remaining unsaturation along the chain of partially saturated NTHs. We explored a series of possible isomers of OH-NTHs with varied degrees of functionalization and evaluated their relative stability, intrinsic mechanical properties, potential use as fillers in reinforced polymer nanocomposites, and their dispersibility in water. While the intrinsic mechanical strength of the NTHs is not significantly altered by the presence of −OH groups, their enhanced compatibility with other polar materials and phases improves the mechanical properties of NTH-based nanocomposites and promotes proper dispersion in aqueous media. These results contribute toward the development of routes for NTH modification, aiming to improve their performance in varied technological applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18954–18964"},"PeriodicalIF":5.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Experimental and Modeling Study of Triethylenetetramine Functionalized Carbon Nanofibers for CO2 Capture","authors":"Puspendu Sardar,&nbsp;, ,&nbsp;Yedla Anil Kumar,&nbsp;, ,&nbsp;Guruprasad Bhattacharya,&nbsp;, ,&nbsp;Bhaskar Bhaduri,&nbsp;, and ,&nbsp;Amar Nath Samanta*,&nbsp;","doi":"10.1021/acsanm.5c03246","DOIUrl":"https://doi.org/10.1021/acsanm.5c03246","url":null,"abstract":"<p >The efficient capture of atmospheric CO₂ is crucial for reducing greenhouse gas concentrations and remains a pivotal strategy in addressing the global climate crisis. Among various CO₂ capture methods, the functionalization of adsorbents with amine groups has emerged as a promising and effective approach, particularly under low-pressure conditions, due to its potential to enhance CO₂ adsorption efficiency significantly. In this study, the copper nanoparticles grown carbon nanofibers supported on activated carbon fiber (Cu-CNF/ACF) integrated nanoadsorbent was selected as the base material owing to its outstanding CO₂ uptake capacity, large specific surface area, and excellent thermal and chemical stability. The nanocomposite was synthesized and functionalized with triethylenetetramine (TETA) at varying loadings (20%, 30%, and 40%) via a wet impregnation process. The nanomaterials were thoroughly characterized using a comprehensive set of analytical techniques, including HRXRD, Micro-Raman spectroscopy, FTIR, FESEM, HRTEM, EDS, XPS, BET, and CHNS analysis. CO₂ adsorption performance was assessed using an iSorb HP2 high-pressure sorption system under variable pressure (0–30 bar) and temperature (25–80 °C) conditions. Experimental CO₂ uptake data were correlated and predicted using various mathematical isotherm models. Response Surface Methodology (RSM) based on the Box–Behnken Design (BBD) and Artificial Neural Network (ANN) supervised the experimental design, which aimed to optimize three variables: adsorption temperature, CO₂ partial pressure, and TETA content. Notably, the 30% TETA incorporated Cu-CNF/ACF exhibited a remarkable CO₂ uptake capacity of 4.876 mmol/g, marking an enhancement of roughly 1.58-fold over the unmodified Cu-CNF/ACF nanocomposite (3.085 mmol/g) under standard conditions of 25 °C and 1 bar.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18853–18872"},"PeriodicalIF":5.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrocatalytic Oxidation of Bisphenol A at a ZIF-8/Supramolecular Carbon Nitride Nanocomposite-Modified Interface","authors":"Ankush Kumar Singh,&nbsp;, ,&nbsp;Vikas Singh Yadav,&nbsp;, ,&nbsp;Rashmi Yadav,&nbsp;, and ,&nbsp; Rosy*,&nbsp;","doi":"10.1021/acsanm.5c03324","DOIUrl":"https://doi.org/10.1021/acsanm.5c03324","url":null,"abstract":"<p >The design of the working electrode interface is crucial for the efficiency and stability of electrocatalytic processes, especially in energy conversion and environmental sensing applications. This study presents the development of a robust electrocatalytically active zeolitic imidazolate framework and a supramolecular self-assembled carbon nitride (ZIF-8|S-CN)-modified interface by employing a controlled electrodeposition method. This technique addresses the constraints of the traditional drop-cast method by facilitating in situ exfoliation and uniform deposition, producing a continuous, homogeneous, and crack-free catalytic layer. Critical parameters, including the ZIF-8 to S-CN ratio, scan rate, and number of deposition cycles, were methodically tuned to improve interfacial characteristics. The optimized ZIF-8|S-CN-modified electrode exhibited markedly enhanced electrochemical performance for the oxidation of Bisphenol A (BPA), a common endocrine-disrupting compound. The improved interface demonstrated a 2.65-fold increase in oxidation current and a 54 mV negative potential shift, outlining the electrocatalytic activity of ZIF-8|S-CN toward BPA oxidation. Furthermore, surface modification with ZIF-8|S-CN resulted in a 1.29-fold larger electroactive surface area than that of the bare electrode. The developed interface achieved a detection limit of 70.05 nM, highlighting its capability for oxidizing trace levels of BPA in environmental samples, which enabled highly sensitive voltammetric estimation. This study emphasizes an adaptable interface engineering methodology that offers a reproducible, reusable, and stable interface for advanced electrochemical applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18924–18936"},"PeriodicalIF":5.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cobalt Hexacyanoferrate Nanocatalysts Combat Acute Lung Injury via Ferroptosis-Based Regulation of Iron Homeostasis and Antioxidant Defenses","authors":"Xiaoli Bao,&nbsp;, ,&nbsp;Xiuqing Liao,&nbsp;, ,&nbsp;Zhongqiang Zhu,&nbsp;, ,&nbsp;Ling Jiang*,&nbsp;, and ,&nbsp;Daoxin Wang*,&nbsp;","doi":"10.1021/acsanm.5c03368","DOIUrl":"https://doi.org/10.1021/acsanm.5c03368","url":null,"abstract":"<p >Acute lung injury (ALI) represents a life-threatening condition with limited therapeutic options. Emerging evidence suggests that ferroptosis, an iron-dependent cell death pathway driven by lipid peroxidation, is a key pathological mechanism underlying ALI. Therefore, we systematically investigated the key role of ferroptosis in ALI pathogenesis using a lipopolysaccharide (LPS)-induced mouse model of sepsis-related ALI. Based on this finding, we engineered polyvinylpyrrolidone-assembled cobalt hexacyanoferrate nanocatalysts (CoHCF NCs) as a ferroptosis inhibitor. These nanocatalysts exhibited dual functions: efficient chelation of free iron ions and strong antioxidant activity. In vivo experiments showed the promising therapeutic efficacy of CoHCF NCs, while in vitro studies using erastin-induced ferroptosis in alveolar epithelial cells confirmed their strong ability to reverse ferroptotic processes. To explore the underlying mechanisms, we employed RNA sequencing, which revealed that CoHCF NCs exert their antiferroptotic effects through a transcriptional network involving antioxidant response enhancement, and iron ion homeostasis regulation. Due to their high ferroptosis-inhibitory capacity and biocompatibility, CoHCF NCs represent a promising therapeutic candidate for ALI.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18937–18953"},"PeriodicalIF":5.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"K-Doping of Graphitic Carbon Nitride: A Pathway for Highly Efficient Photocatalytic Synthesis of Hydrogen Peroxide","authors":"Xujing Tantai,&nbsp;, ,&nbsp;Qun Zhou,&nbsp;, ,&nbsp;Lili Shi,&nbsp;, ,&nbsp;Meixuan Wu,&nbsp;, ,&nbsp;Pengfei Sun,&nbsp;, and ,&nbsp;Xiaoping Dong*,&nbsp;","doi":"10.1021/acsanm.5c03533","DOIUrl":"https://doi.org/10.1021/acsanm.5c03533","url":null,"abstract":"<p >The photocatalytic synthesis of hydrogen peroxide (H₂O₂) has emerged as a promising alternative to the energy-intensive anthraquinone process. Among various photocatalysts, graphitic carbon nitride (g-C₃N₄), as a metal-free semiconductor with visible-light responsiveness, has demonstrated exceptional potential for the selective production of H₂O₂. In this work, a K-modified g-C₃N₄ photocatalyst (KCN) was facilely synthesized via a secondary calcination method using potassium chloride (KCl) as the doping precursor. The optimized sample KCN-6 exhibited remarkable H₂O₂ generation activity, achieving a production rate of 409.4 μmol·g^–1·h^–1 in a 10% ethanol solution, an 8-fold enhancement compared to that of pristine g-C₃N₄. Subsequently, a cyclic test was conducted, and its performance remained at 90% after five cycles. At the same time, the H₂O₂ yield further increased to 818.9 μmol·g^–1·h^–1 under sunlight irradiation, highlighting its practical applicability. The superior performance stems from the synergistic effect of K incorporation and modification of cyano groups, which narrows the band gap, broadens light absorption, and facilitates charge-carrier separation. Based on the detection of active species, a plausible mechanism involving a two-step single-electron-transfer pathway was proposed. This study elucidates that K incorporation can modulate the photophysical properties and charge-transfer dynamics, offering valuable insights for designing high-performance, solar-driven photocatalytic systems for sustainable H₂O₂ production.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"19001–19011"},"PeriodicalIF":5.5,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green Synthesis of Nanoconfined CsPbBr3 Nanocrystals in Nanoporous Silica and Densely Sealed by Silica Gel for Moisture- and Air-Stable Phosphor Applications","authors":"Lou-Yun Lai,&nbsp;, ,&nbsp;Chun-Han Hsu*,&nbsp;, ,&nbsp;Ruei-Bin Wang,&nbsp;, ,&nbsp;Hong-Ping Lin,&nbsp;, ,&nbsp;Wei-Hsiang Wang,&nbsp;, ,&nbsp;Kai-Wen Chang,&nbsp;, and ,&nbsp;Yu-Chin Lin,&nbsp;","doi":"10.1021/acsanm.5c03676","DOIUrl":"https://doi.org/10.1021/acsanm.5c03676","url":null,"abstract":"<p >High-performance CsPbBr₃ nanocrystal phosphors were prepared using an environmentally friendly and straightforward aqueous one-pot synthesis method at 70 °C. CsPbBr₃ nanocrystals were nucleated and grew in situ within the nanopores of a porous silica (p-SiO₂) support, yielding nanoconfined CsPbBr₃@p-SiO₂ (“@” denotes nanocrystals confined in silica nanopores). The nanocrystals were sealed by a highly cross-linked sodium silica gel (SS), creating a protective layer that enhanced the stability of the resulting CsPbBr₃@p-SiO₂/SS phosphor (“/” denotes an external sealing layer). The effects of the silica sealing precursor and the pH condition during nanoporous support synthesis were systematically examined. The phosphors exhibited strong light absorption in the visible range and emitted high-intensity green fluorescence at 520 nm. The fluorescence emission showed a minimum full width at half-maximum of 24.5 nm, a maximum photoluminescence quantum yield of 96.1%, and an average fluorescence lifetime of up to 40.84 ns. The materials retain long-term ambient stability for ≥180 days under moisture and air exposure. These results highlight how nanoscale confinement and interfacial nanosealing cooperatively stabilize perovskite nanocrystals, positioning CsPbBr₃@p-SiO₂/SS as a robust candidate for advanced phosphor applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"19045–19054"},"PeriodicalIF":5.5,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-Layer Graphene Film-Based Microacoustic Pressure Sensing through Confinement-Enhanced Reaction Engineering","authors":"Xue Zhang,&nbsp;, ,&nbsp;Li Sun,&nbsp;, ,&nbsp;Xing Guo,&nbsp;, ,&nbsp;Peng Wang,&nbsp;, ,&nbsp;Fapeng Yu*,&nbsp;, ,&nbsp;Zhongqi Dong,&nbsp;, and ,&nbsp;Enbao Pan,&nbsp;","doi":"10.1021/acsanm.5c03776","DOIUrl":"https://doi.org/10.1021/acsanm.5c03776","url":null,"abstract":"<p >Chemical vapor deposition (CVD) on a Cu (copper) substrate is regarded as the best approach for large-scale graphene production, but preparation of high-quality single-layer graphene films remains a challenge for the research community. To address this challenge, a graphene growth method based on confinement-enhanced reaction engineering was proposed in this study. Using Cu(100) as the catalytic substrate, a simple confinement device was introduced to reduce the gas flow rate over the substrate and regulate the carbon source concentration. Additionally, Cu foam was employed as a source of Cu vapor, providing a continuous driving force for the complete decomposition of the carbon source. This approach further enhanced the catalytic reaction between the Cu vapor and the carbon source gas, ultimately achieving the successful fabrication of a uniformly distributed graphene film with a single-layer ratio of 99.8%. Moreover, by implementing a confinement device, the additional layer growth on one side of the Cu substrate was suppressed. The graphene film grown using confinement-enhanced reaction engineering exhibited outstanding mechanical properties with a 2D Young’s modulus of 263 N/m. These findings offer insight into the industrial-scale production of high-quality single-layer graphene on Cu(100) crystal facets and also offer an alternative option for applications in microacoustic pressure sensing.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"19055–19064"},"PeriodicalIF":5.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfur Quantum Dots Emitting Blue–Violet Chemiluminescence, Photoluminescence, and Near-Infrared Electrochemiluminescence","authors":"Congyang Zhang,&nbsp;, ,&nbsp;Zackry Whitworth,&nbsp;, ,&nbsp;Zhenzhong Cai,&nbsp;, ,&nbsp;Kate Roberge,&nbsp;, ,&nbsp;Ping Hu,&nbsp;, ,&nbsp;Wai-Tung Shiu,&nbsp;, ,&nbsp;Xiaoli Qin,&nbsp;, ,&nbsp;Jinxing Chen,&nbsp;, ,&nbsp;Paul J. Ragogna,&nbsp;, ,&nbsp;Lijia Liu,&nbsp;, ,&nbsp;Qiao Zhang,&nbsp;, and ,&nbsp;Zhifeng Ding*,&nbsp;","doi":"10.1021/acsanm.5c03260","DOIUrl":"https://doi.org/10.1021/acsanm.5c03260","url":null,"abstract":"<p >Currently, there remains a lack of single nanomaterials capable of emitting across the spectrum from the ultraviolet to near-infrared. The development of such broadband-emissive nanomaterials would greatly advance a variety of fields, including biosensing, display technologies, and anticounterfeiting applications. Sulfur quantum dots (SQDs), emerging as luminescent materials, harbor significant potential for their diverse applications at low costs. In this work, light emissions from our synthesized SQDs, photoluminescence (PL), chemiluminescence (CL), and electrochemiluminescence (ECL) in the aqueous phase, were tuned across a wavelength range from 350 to 1050 nm by altering the excitation sources and reaction enthalpy. Both PL and CL display a similar emission peak around 420 nm, with 35% of the photons falling into the ultraviolet region. These may be attributed to emissions from the SQD core states. In the ECL process, a significant red shift in its emission peak at 690 nm was observed, with the emission range extending up to 1050 nm. This shift implies that the radiative relaxation center has switched to the surface states, underscoring the ECL process’ pronounced preference for surface states or low-energy band gaps in semiconductor nanoparticles. Such phenomena were further confirmed through the absolute PL quantum yield, CL and ECL quantum efficiency determinations, and reaction enthalpy calculations. The photoluminescence quantum yield of SQDs was determined to be 70.3% ± 4.4%, while absolute quantum efficiencies of CL and ECL were measured to be 1.1% ± 0.14% and 0.00072% ± 0.00005%, respectively. Notably, the CL quantum efficiency of SQDs is 110 times higher than that of nitrogen-doped carbon quantum dots of the equivalent size, while the ECL efficiency is one of the strongest among many semiconductor QDs, which shows great potential for applications in medical diagnosis, biological sensing, and other promising fields. This research offers valuable insights into devising the design of future quantum dots.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18873–18884"},"PeriodicalIF":5.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sb-Doped Bi2O3 Nanosheets for Selective Electroreduction of CO2 to Formic Acid","authors":"Joosung Kim,&nbsp;, ,&nbsp;Yeomin Kang,&nbsp;, and ,&nbsp;Ki Tae Park*,&nbsp;","doi":"10.1021/acsanm.5c03434","DOIUrl":"https://doi.org/10.1021/acsanm.5c03434","url":null,"abstract":"<p >Electrochemical carbon dioxide reduction reaction (CO₂RR) into value-added chemicals offers a promising pathway to mitigate climate change and promote sustainable energy conversion. In this work, we synthesize antimony (Sb)-doped bismuth oxide (Bi₂O₃) nanosheets (NSs) as highly efficient and selective electrocatalysts for the CO₂RR to formic acid. Incorporating Sb into Bi₂O₃ effectively modulates the local electronic environment of Bi atoms, creating electron-deficient sites. These sites significantly enhance CO₂ adsorption and stabilize the key intermediate (*OCHO), verified by in situ Raman spectroscopy, where the Sb-doped Bi₂O₃ NSs exhibited the early onset and stronger intensity of the *OCHO vibrational signature compared to undoped Bi₂O₃. Among the various Sb doping levels, 10% Sb-doped Bi₂O₃ NSs exhibit the highest CO₂RR performance, achieving a maximum Faradaic efficiency (FE_HCOO^–) of 88.2% at −1.5 V (vs RHE) and a partial current density (<i>j</i>_HCOO^–) of 80.1 mA·cm^–2 at −1.7 V (vs RHE) in an H-type cell. Moreover, in a solid-state electrolyte (SSE) cell for electrolyte-free formic acid (HCOOH) production, the Sb-doped Bi₂O₃ NSs show an excellent partial current density (<i>j</i>_HCOOH) of 279.8 mA·cm^–2 for HCOOH production. Notably, the direct formation of highly concentrated formic acid (&gt;10 wt %) is achieved as a single-pass product. Furthermore, the catalyst demonstrates robust stability, maintaining consistent performance over 24 h of operation. This study demonstrates Sb doping as an effective strategy for enhancing the electrocatalytic performance of Bi₂O₃-based electrocatalysts.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18965–18974"},"PeriodicalIF":5.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Directed Assembly of Gold Bipyramids and Quantum Dots Using Click Chemistry for Plasmon-Exciton Coupling","authors":"Tohid Baradaran Kayyal,&nbsp;, ,&nbsp;Vijin Kizhake Veetil,&nbsp;, ,&nbsp;Reshma Mathew,&nbsp;, ,&nbsp;Lekan Ajiboye,&nbsp;, ,&nbsp;Chanda M. Lowrance,&nbsp;, ,&nbsp;Jason Guzman,&nbsp;, ,&nbsp;Matthew Pelton,&nbsp;, and ,&nbsp;Marie-Christine Daniel*,&nbsp;","doi":"10.1021/acsanm.5c02896","DOIUrl":"https://doi.org/10.1021/acsanm.5c02896","url":null,"abstract":"<p >Advances in directed nanoparticle assembly are enabling the development of hybrid nanostructures with enhanced light-matter interaction. Among these hybrid nanostructures are those with coupled plasmonic and excitonic components. Here, we report the design and assembly of hybrid nanostructures for plasmon-exciton coupling, composed of end-to-end pairs of gold bipyramids (AuBPs) with a CdSe/CdS quantum dot (QD) between the AuBPs. The assembly is achieved through a copper-free click reaction between azide-functionalized AuBPs and dibenzocyclooctyne (DBCO)-modified QDs, providing efficient and strong linkage between nanoparticles. The functionalization and assembly of the nanoparticles was verified through infrared and visible absorption spectroscopy, fluorescence spectroscopy, zeta potential measurements, and transmission electron microscopy. The AuBPs provide concentrated electric field confinement at their tips through the excitation of longitudinal plasmon resonances, enabling interaction with excitons in QDs located near the tips. Measurements on single assemblies showed an induced transparency in the plasmon scattering spectrum, characteristic of intermediate coupling between plasmons and excitons. A coupling strength of 45 meV was achieved for single QDs at room temperature. These results highlight the potential of colloidal AuBP-QD assemblies for achieving strong plasmon-exciton coupling using a directed assembly approach enabled by an efficient click chemistry strategy.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 39","pages":"18751–18761"},"PeriodicalIF":5.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}