New Journal of Chemistry最新文献

{"title":"Electrochemical response of a COF/MWCNT sensor based on a bifunctional COF towards dopamine and uric acid†","authors":"Ya-Xin Li, Dong-Mei Ma, Ming-Xia Wang, Cheng Wang, Fu-Fa Wu, Rong-Da Zhao, Jun Xiang and Xing-Ming Zhao","doi":"10.1039/D5NJ01401H","DOIUrl":"https://doi.org/10.1039/D5NJ01401H","url":null,"abstract":"<p >This study has successfully fabricated a novel electrochemical sensor utilizing a bifunctional covalent organic framework (COF) and multi-walled carbon nanotubes (MWCNTs) as core building blocks, aiming to achieve highly sensitive and selective detection of dopamine (DA) and uric acid (UA). Specifically, the bifunctional COF synthesized through an imine-based reaction has exhibited a substantial specific surface area. This characteristic has provided abundant binding sites for the post-modification of MWCNTs, and the synergistic interaction between the two components has endowed the sensor with exceptional analytical performance. This synergy has significantly enhanced the adsorption and enrichment capabilities of the modified electrode toward DA and UA. The constructed electrochemical sensor has demonstrated low detection limits (LODs) of 0.0316 μM for DA and 0.0581 μM for UA, along with broad linear ranges of 0.3–500 μM and 0.1–500 μM, respectively. Additionally, the sensor has displayed outstanding selectivity, repeatability, anti-interference ability, and long-term stability, highlighting its potential for applications in the field of electrochemical biosensing.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9368-9378"},"PeriodicalIF":2.7,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206277","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":"Rapid synthesis of MOF CaBTC using an ultrasonic irradiation method and its derivative materials for CO2 capture†","authors":"Xiaoqi Jin, Zongqun Li, Jinlong Ge, Linlin Zhu, Caiyan Liu, Qiu Li, Jing Liu, Chenlin Yin and Gaoyu Su","doi":"10.1039/D5NJ00301F","DOIUrl":"https://doi.org/10.1039/D5NJ00301F","url":null,"abstract":"<p >Ca-based MOFs and related derived materials offer promising potential for CO<small>₂</small> capture. In this study, we synthesized a CaBTC MOF and polydopamine coated MOF composite by using an ultrasonic irradiation method, and a corresponding derivative was obtained by thermal treatment. The capacity of CO<small>₂</small> capture and subsequent adsorption performance of the resulting CaBTC MOF/MOF derivative under different temperatures were investigated in detail. The structural features and textural parameters of the obtained absorbents were assessed by XRD, SEM, EDS, FT-IR spectroscopy, Raman spectroscopy, XPS, TG-DSC, and N<small>₂</small> absorption/desorption characterization. The results demonstrated that the prepared CaO/CN-<em>x</em> with basic functional groups exhibited micro/mesoporosity derived from organic matter removal through carbonization at 800 °C. Both of these properties accounted for the highest CO<small>₂</small> capacity of 2.30 mmol g<small>⁻¹</small> at 273 K using pure CO<small>₂</small> for the CaO/CN-5 sample. Additionally, we found that the derivative of the CaBTC MOF at high temperatures experienced two stages of chemical adsorption, as well as carbonation reaction. The high CO<small>₂</small> capture capacity reached 60.2 mass% in 10 min at 873 K for the CaO sample. Furthermore, the introduction of carbon components derived from organic matter in the CaBTC MOF derivative matrix promoted the conversion of CO<small>₂</small> to CO through the reduction reaction. Possible reaction mechanisms for the conversion of CO<small>₂</small> to CO were preliminary proposed based on thermodynamic calculation.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9395-9407"},"PeriodicalIF":2.7,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206280","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":"Smart design of phenanthrene-based organic photovoltaics using machine learning†","authors":"Hussein A. K. Kyhoiesh, Azal S. Waheeb, Ashraf Y. Elnaggar, Mustafa Al-Khafaji, Islam H. El Azab, Mohamed H. H. Mahmoud, Mohammed F. Odhaib and Zainab A. Abass","doi":"10.1039/D5NJ00530B","DOIUrl":"https://doi.org/10.1039/D5NJ00530B","url":null,"abstract":"<p >To optimize organic photovoltaic (OPV) performance, machine learning (ML)–based analysis of phenanthrene-based organic dyes is performed. For the analysis, 968 phenanthrene-based dyes were collected from the literature, and descriptors were designed using the RDKit tool. To predict their PV-related parameters, different ML models were evaluated, and gradient boosting regression with an <em>R</em>-squared (<em>R</em><small>²</small>) value of 0.87 and root mean square error (RMSE) value of 0.002. Shapley additive exPlanation (SHAP) values revealed that MinPartialCharge can be the most influential descriptor for predicting the exciton binding energy (<em>E</em><small>_b</small>). Based on the descriptor-based analysis, new organic dye designs are proposed with minimum predicted <em>E</em><small>_b</small> values. Structural similarity analysis using the synthetic accessibility likelihood index (SSA–SALI) revealed scores of 0.92–0.98 with distinct structure-based clusters. A convex hull diagram was constructed, which predicted the formation enthalpy (Δ<em>H</em><small>_f</small>) to be 5–35 eV per atom and the decomposition enthalpy (Δ<em>H</em><small>_d</small>) to be up to 3.0 eV per atom. Light harvesting efficiency reached up to 94%, and the open circuit voltage gave good values. This study illuminates the relationships between the molecular structure and OPV performance of phenanthrene-based organic dyes and will facilitate the rational design of high-efficiency organic dyes.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9305-9316"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206226","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":"Novel eco-friendly extraction of high purity Eucommia ulmoides gum via composite enzyme hydrolysis pretreatment combined with a PEG-4000 aqueous solvent biphasic system†","authors":"Yichun Yang, Chao Chen, Zhimin Wang, Zemin Ou, Tianxiao Yang, Jingjing Zhu and Xiaoqian Liu","doi":"10.1039/D5NJ00746A","DOIUrl":"https://doi.org/10.1039/D5NJ00746A","url":null,"abstract":"<p >Utilizing <em>Eucommia ulmoides</em> pericarp samaras as the raw material, a novel strategy for extracting <em>Eucommia ulmoides</em> gum (EUG) through composite enzyme hydrolysis pretreatment combined with a biphasic solution system consisting of PEG-4000 aqueous solution and petroleum ether was established for the first time. Optimal complex enzymatic hydrolysis parameters were as follows: hydrolysis time was 13 h, liquid–solid ratio was 12 : 1 mL g<small>⁻¹</small> and composite enzyme dosage was 1.1%. The maximum purity and maximum yield of refined EUG (EUG-3) were 98.25% and 15.77%, respectively. The physicochemical structure, microstructure, molecular weight and crystal structure of EUG-1 (commercially available EUG), EUG-2 (petroleum ether extraction EUG) and EUG-3 were characterized by attenuated total reflection infrared (ATR-IR) spectroscopy, hydrogen nuclear magnetic resonance (<small>¹</small>H NMR) spectroscopy, field emission scanning electron microscopy (SEM), gel permeation chromatography (GPC) and X-ray diffraction (XRD), respectively. Differential scanning calorimetry (DSC) results indicated that the melting point and glass transition temperature of extracted EUG-3 were stable. EUG-3 displayed better mechanical properties, compared with EUG-1 and EUG-2. The high-purity EUG extracted using this method is expected to be developed into multifunctional biomedical materials with excellent application prospects.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9509-9519"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206367","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":"Acridine orange as a highly sensitive probe to study the stability of onium salts†","authors":"Ivan O. Putnin, Alexandra A. Sysoeva, Aleksey V. Kovalenko, Mikhail V. Il’in and Dmitrii S. Bolotin","doi":"10.1039/D5NJ01326G","DOIUrl":"https://doi.org/10.1039/D5NJ01326G","url":null,"abstract":"<p >Halogen and chalcogen bond donors can undergo decomposition in solution, leading to the formation of Lewis acids. When these compounds act as catalysts, an important inquiry emerges: are the observed catalytic effects attributable solely to the parent salts, or do they involve contributions from the resulting decomposition products? Addressing this query necessitates a thorough evaluation of the degree of salt degradation. Conventional analytical methods such as NMR and HPLC, while widely employed for reaction monitoring, often lack sensitivity to detect trace levels of acidic species. In our study, we utilized UV-vis spectrophotometric titrations to assess the stability of halogen and chalcogen bond donor molecules. The findings revealed no discernible relationship between their stability profiles and their catalytic performance. Our data unequivocally support the conclusion that σ-hole carrier-mediated catalysis cannot be categorized as concealed Brønsted-type catalysis.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9408-9415"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206281","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":"Interface-coupled 1D/2D/2D CoTe2/graphene/carbon heterostructures as high-performance anode materials for potassium ion batteries†","authors":"Jiajia Ye, Zizhong Chen, Zifan Wang, Juan An, Zhen Kong, Wensi Li, Yukun Zhang, Guang Xia and Jibin Song","doi":"10.1039/D5NJ00845J","DOIUrl":"https://doi.org/10.1039/D5NJ00845J","url":null,"abstract":"<p >Exploration of novel anode materials exhibiting outstanding electrochemical performances holds immense significance for the advancement of potassium-ion batteries (PIBs). In this work, interface-coupled 1D/2D/2D CoTe<small>₂</small>/graphene/carbon heterostructures (CoTe<small>₂</small>@rGO@C) were successfully synthesized <em>via</em> a simple one-step hydrothermal method combined with a carbonization process. The three-dimensional conductive network, synergistically constructed with graphene and nitrogen-doped carbon layers through dual physical encapsulation, not only enhanced electrical conductivity and K-ion diffusion kinetics but also effectively accommodated the volume changes of CoTe<small>₂</small> nanorods, thereby maintaining the structural integrity of the electrode during cycling. Specifically, it delivered an impressive specific capacity of 182.0 mA h g<small>⁻¹</small> after 400 cycles at 500 mA g<small>⁻¹</small>, with an exceptional rate capability of 163.8 mA h g<small>⁻¹</small> at an ultrahigh current density of 5000 mA g<small>⁻¹</small>. Furthermore, the material exhibited outstanding cycling stability, maintaining a capacity retention of over 99.8% after 1000 cycles at 1000 mA g<small>⁻¹</small>. This heterogeneous engineering approach, combined with an innovative one-dimensional–two-dimensional–two-dimensional hybrid architecture, offers a promising strategy for designing novel heterostructural anode materials with exceptional electrochemical performance in PIBs.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9196-9204"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206306","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":"Stability and structures of La, Y, and Sc endohedral metalloazafullerenes: the role of cage topology, N-doping site, and metal†","authors":"Jiaojiao Lin and Yang Wang","doi":"10.1039/D5NJ01469G","DOIUrl":"https://doi.org/10.1039/D5NJ01469G","url":null,"abstract":"<p >Endohedral metalloazafullerenes (EMAFs) are a distinctive class of fullerene derivatives characterized by the encapsulation of metal atoms or clusters within azafullerene cages. These intriguing nanomaterials exhibit unique properties with potential applications in quantum computing, molecular magnets, and optoelectronics. However, due to the experimental characterization limitations and the structural complexity that complicates computational studies, reliably identifying the molecular structures of EMAFs remains a challenging task. Moreover, the factors influencing their stability, such as cage topology, nitrogen doping sites, and encapsulated metal species, are not yet well understood. In this study, we employ density functional theory (as high as BP86/Def2-QZVP) to systematically investigate the stability and structures of monometallic EMAFs, M@C<small>_{2<em>n</em>–1}</small>N (M = La, Y, Sc; 2<em>n</em> = 82, 84, 80, 72), focusing on the interplay between cage size and isomerism, nitrogen substitution, and metal encapsulation. We demonstrate that the experimentally observed La@C<small>₈₁</small>N-<em>C</em><small>_3<em>v</em></small>(8) structure corresponds to the most thermodynamically stable isomer. We further predict that all EMAFs studied exhibit significantly negative formation free energies, suggesting they are promising synthetic targets, particularly La@C<small>₈₃</small>N-<em>D</em><small>_2<em>d</em></small>(23) and La@C<small>₇₉</small>N-<em>D</em><small>_5<em>h</em></small>(6). Our results show that larger cage sizes, La encapsulation, and nitrogen substitution at pentagon-rich sites enhance the stability of monometallic EMAFs. These observations can be explained using simple electrostatic models and the topological charge stabilization rule. Our findings not only deepen the understanding of EMAF chemistry but also provide valuable insights for the design of EMAF-based functional materials with engineered electronic and magnetic properties.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8769-8781"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140108","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":"Porous materials based on organic macrocyclic molecules synthesized through Schiff base chemistry for iodine adsorption†","authors":"Jiali Wen, Yi Lu, Fang Yang, Panli Sun, Shaoqing Luo and Zongxia Guo","doi":"10.1039/D5NJ01140J","DOIUrl":"https://doi.org/10.1039/D5NJ01140J","url":null,"abstract":"<p >Radioactive iodine is a harmful pollutant in gaseous nuclear waste that can cause irreversible damage to both humans and the environment. The organic macrocyclic molecules <strong>OMM-1</strong> and <strong>OMM-2</strong> were synthesized through a Schiff-base reaction and could be handled easily and efficiently. Nitrogen adsorption experiments confirmed the porous structure of the OMM powders. The <strong>OMM-1</strong> powder exhibited excellent iodine vapor capture properties, with a maximum adsorption capacity of up to 421.9 wt%. This exceptional iodine vapor capture capability likely arose from the porous structure; furthermore, charge transfer complexes might form between iodine and the aromatic systems containing imine bonds. More importantly, it was found that the iodine adsorption capacity remained as high as 99.5% after repeating the adsorption–desorption experiments 5 times. This research has potential applications and might provide alternative strategies for the treatment of radioactive iodine vapor in nuclear waste gas.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9317-9322"},"PeriodicalIF":2.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206227","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":"A mechanically strong and highly conductive MXene/polyacrylamide–alginate composite hydrogel with a double-network structure for a flexible wearable sensor†","authors":"Chengcheng Yang, Jiacheng Zhang, Jinchen Fan, Shige Wang, Mingsong Wang, Xiansong Wang, Jian Chen and Guisheng Li","doi":"10.1039/D5NJ00347D","DOIUrl":"https://doi.org/10.1039/D5NJ00347D","url":null,"abstract":"<p >Flexible wearable sensors have attracted considerable attention in the applications of biomedicine, human–computer interaction, and many other fields. Flexible hydrogel-based wearable sensors stand out because of their excellent flexibility and biocompatibility for monitoring human activities. However, the existing hydrogel-based sensors are generally faced with bottlenecks such as low mechanical strength, poor sensing stability (or repeatability), and limited sensitivity, which greatly hinders their practical applications. Herein, a novel mechanically strong and highly conductive double-network MXene-sodium alginate (SA)-polyacrylamide (PAM)-Ca<small>²⁺</small>/Li<small>⁺</small> (MSP-Ca<small>²⁺</small>/Li<small>⁺</small>) composite hydrogel with MXene (Ti<small>₃</small>C<small>₂</small>T<small>_<em>x</em></small>) nanosheets and lithium chloride (LiCl) as conductive fillers is developed for enhancing ionic conductivity. The results show that the M3S1P3-Ca<small>²⁺</small>/Li<small>⁺</small> composite hydrogel exhibits high compression and tensile properties as well as good stretchability and elasticity, and fast self-recoverability which are mainly caused by the synergistic effect of the nanofiller and chemical and physical co-crosslinking. The M3S1P3-Ca<small>²⁺</small>/Li<small>⁺</small> composite hydrogel sensor could maintain a stable and reversible electrical resistance signal output under standard cyclic tensile strain sensing persisting around 3600 s with a high gauge factor (GF) of 1.45 and a low latency of 60 ms. Specifically, under realistic human motion monitoring tests (<em>i.e.</em>, finger, arm, wrist, and mouth motions), the sensor exhibited excellent sensing sensitivity and repeatability without reduction in the mechanical and electrical properties. Therefore, the MSP composite hydrogel could provide a simple solution for the realization of intelligent multi-functional physiological detection and also will pave the way for the new generation of biomimetic skin-like sensors.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9283-9294"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206224","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":"Precise regulation of MOF morphology and structure via organic linker ratio adjustment for enhanced tumor-specific therapy†","authors":"Qishan Xu, Xuetong Ji, Changkang Sun, Xiangyan Chen and Yantao Li","doi":"10.1039/D5NJ01116G","DOIUrl":"https://doi.org/10.1039/D5NJ01116G","url":null,"abstract":"<p >Precise control over the morphology and structure of metal–organic frameworks (MOFs) for optimizing their functional properties, particularly in tumor-specific therapy, remains a significant challenge. Here, we demonstrate the tunable construction of MOFs by adjusting the ratio of two organic linkers, 4,4′-dithiobisbenzoic acid (DTBA) and 4-((4-carboxybenzyl)amino)benzoic acid (CBAB), which govern the crystallinity and catalytic behavior of the resulting nanoparticles (NPs). FeCl<small>₃</small> reacted with DTBA to produce crystalline rod-shaped MOFs, while CBAB led to amorphous spherical nanoparticles. Increasing the DTBA content enhanced catalytic performance by modulating the iron catalytic environment, significantly promoting reactive oxygen species (ROS) generation and glutathione (GSH) depletion. Cellular experiments confirmed that DTBA-rich MOFs exhibited potent anticancer activity <em>via</em> an amplified chemodynamic therapy (CDT) effect. This study provides a promising strategy for designing next-generation nanomaterials with precisely tailored structures and functionalities.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 19","pages":" 7725-7730"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938048","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}