New Journal of Chemistry最新文献

{"title":"Targeted design of heterotrimetallic 1-D coordination polymers based on functionalized metallocenes featuring antibacterial activity†","authors":"Marina A. Uvarova, Maxim A. Shmelev, Olga B. Bekker, Irina A. Lutsenko, Sergey E. Nefedov and Igor L. Eremenko","doi":"10.1039/D4NJ03598D","DOIUrl":"https://doi.org/10.1039/D4NJ03598D","url":null,"abstract":"<p >Using (bis)diethoxyphosphoryl ferrocene [Fc(O<img>P(OEt)<small>₂</small>)<small>₂</small>] and transition metal carboxylates – [M<small>₂</small>(μ-OOCR)<small>₄</small>(CH<small>₃</small>CN)<small>₂</small>], M = Cu<small>^II</small>, R = <small>^<em>t</em></small>Bu, (C<small>₅</small>H<small>₄</small>)Mn(CO)<small>₃</small> (Cym) or [M<small>₃</small>(μ-OOCR)<small>₆</small>(CH<small>₃</small>CN)<small>₂</small>], M = Ni<small>^II</small>, Co<small>^II</small>, R = Cym, a series of heterometallic polymers with metal cores {Cu<small>₂</small>Fe}<small>_<em>n</em></small> (<strong>1</strong>), {Cu<small>₂</small>Mn<small>₄</small>Fe}<small>_<em>n</em></small> (<strong>2</strong>) {Ni<small>₂</small>Mn<small>₄</small>Fe}<small>_<em>n</em></small> (<strong>3</strong>), and {Co<small>₂</small>Mn<small>₄</small>Fe}<small>_<em>n</em></small> (<strong>4</strong>) were obtained under mild conditions. Compounds <strong>1</strong> and <strong>2</strong> showed antibacterial activity against a <em>Mycobacterium smegmatis</em> strain <em>in vitro.</em></p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434668","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":"Visible light: shaping chemical intelligence in proteinoid–ZnO interfaces†","authors":"Panagiotis Mougkogiannis, Noushin Raeisi Kheirabadi and Andrew Adamatzky","doi":"10.1039/D4NJ03803G","DOIUrl":"https://doi.org/10.1039/D4NJ03803G","url":null,"abstract":"<p >We study the emergence of chemical intelligence in proteinoid–ZnO nanocomposites through their interaction with visible light. When these novel materials are exposed to light, they display electrical spiking behaviour that is similar to the action potentials of neurons. We examine the influence of various light conditions, such as wavelength, intensity, and duration, on the photo-response of these nanocomposites. The results indicate that higher light intensity and longer duration are associated with increased frequency and amplitude of voltage spikes. Furthermore, blue light is more effective than red light in this regard. This light-dependent behaviour indicates a form of chemical intelligence, in which the material learns and responds to external stimuli. The results of our research emphasise the potential of proteinoid–ZnO nanocomposites to develop bio-inspired, light-sensitive systems, which can lead to advancements in areas such as photocatalysis, unconventional computing, and adaptive materials. This study enhances the understanding of chemical intelligence and how it is demonstrated in synthetic nanomaterials.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nj/d4nj03803g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design, synthesis and biological activity evaluation of novel allosteric inhibitors of the DENV NS2B–NS3 protease†","authors":"Huaijie Lv, Yu Lu, Xuanhe Xin, Xinru Zhou, Shan Yang, Dingyi Jia and Chao Ma","doi":"10.1039/D4NJ03346A","DOIUrl":"https://doi.org/10.1039/D4NJ03346A","url":null,"abstract":"<p >The dengue virus (DENV) is a mosquito-borne flavivirus transmitted through the infected mosquito, primarily of the <em>Aedes</em> genus. Over recent decades, the significant emergence of DENV infections has posed growing challenges for control efforts. Extensive research indicates that the dengue NS2B–NS3 protease, a non-structural viral protein, is the most promising target in dengue drug research. Therefore, our study synthesized two series of novel allosteric inhibitors of the NS2B–NS3 protease to explore previous allosteric inhibitors of the protease. Meanwhile, enzyme inhibitory activities of all compounds are measured and IC<small>₅₀</small> values of the optimized compounds are obtained by utilizing a fluorescence-based assay. Notably, compound A24 demonstrates the highest enzyme inhibitory activity with an IC<small>₅₀</small> value of 16 μM. Further enzyme kinetic experiments confirm that the optimized compound A24 functions as a non-competitive inhibitor of the NS2B–NS3 protease. Through molecular docking studies, compound A24 showed a binding energy of −5.6 kcal mol<small>⁻¹</small>, comparable to the lead compounds, which preliminarily explains its similar inhibitory activity. In addition, compound A24 forms a stable complex with the protein primarily through hydrogen bonds and π–π interaction, with subsequent dynamics simulations confirming the stable binding mode. In conclusion, we designed and synthesized 59 novel scaffold compounds and identified compound A24 with the highest activity through pharmacological experiments and computer-aided drug design, which targets the allosteric sites and contributes significantly to the prevention of the dengue virus.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434673","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":"Quinolin-2(1H-)-one-isoxazole dye as an acceptor for mild addition of bisulfite in cationic or zwitterionic aqueous micellar solutions†","authors":"Guillermo E. Quintero, Catalina Espinoza, Jhesua Valencia, Daniel Insuasty, William Tiznado, Luis Leiva-Parra, José G. Santos, Edwin G. Pérez and Margarita E. Aliaga","doi":"10.1039/D4NJ03295K","DOIUrl":"https://doi.org/10.1039/D4NJ03295K","url":null,"abstract":"<p >(<em>E</em>)-6-Methoxy-1-methyl-3-(2-(3-methyl-4-nitroisoxazol-5-yl)vinyl)quinolin-2(1<em>H</em>)-one dye (<strong>MQI</strong>) has been synthesized, and its structural and electronic properties have been characterized by employing UV-vis spectroscopy in combination with computational methods. The <strong>MQI</strong> dye has been assessed as an activated Michael acceptor-type probe toward bisulfite ions. This reaction was kinetically tested in different mild, cationic (cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, and cetylpyridinium bromide), and zwitterionic (<em>N</em>-decyl-<em>N</em>,<em>N</em>-dimethyl-3-ammonio-1-propanesulfonate, <em>N</em>-tetradecyl-<em>N</em>,<em>N</em>-dimethyl-3-ammonio-1-propanesulfonate, and <em>N</em>-hexacyl-<em>N</em>,<em>N</em>-dimethyl-3-ammonio-1-propanesulfonate) micellar solutions at pH ∼ 5.5. Both micellar media remarkably allow the addition reactions, increasing the reactivity of <strong>MQI</strong> towards bisulfite ions, the biggest effects were found in the presence of cationic micelles. The binding constants of <strong>MQI</strong> with the micelles and the rate constants were determined from kinetic data, which were interpreted on the basis of the pseudophase kinetic model. The kinetic study and the product analysis allow us to highlight the relevant role of the association between <strong>MQI</strong> dye and the micellized surfactant, allowing efficient nucleophilic addition of bisulfite ions. The findings of this work will be valuable for the use of micellar solutions as an alternative medium to replace the use of toxic solvents to carry out organic reactions to perform nucleophilic addition reactions of bisulfite.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nj/d4nj03295k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A polyazophenylglycine attapulgite electrochemical immunosensor with a high electronegative surface for sensing aflatoxin B1 with high sensitivity and precision†","authors":"Haosen Xiong, Renyang Yang, Xiaohong Fu, Wensheng liao, Jiagen Li, Shuyong Shang, Songqing Liu and Qiang Zhang","doi":"10.1039/D4NJ03142C","DOIUrl":"https://doi.org/10.1039/D4NJ03142C","url":null,"abstract":"<p >Aflatoxin B1 (AFB1) is one of the most harmful mycotoxins to human and environmental health. In this paper, a novel electrochemical AFB1 immunosensor using attapulgite composite <em>N</em>-phenylglycine as a conductive material is developed. The strong π–π and electrostatic interactions between the AFB1 antibody and the nanomaterial are investigated. The developed electrochemical AFB1 immunosensor exhibits high sensitivity, with a detection limit of 0.011 ng mL<small>⁻¹</small> and a quantitation limit of 0.035 ng mL<small>⁻¹</small> (S/N = 3). The recoveries for three different concentrations of AFB1 range from 97.5% to 104.6%, with a relative standard deviation of stability less than 2.0%. ATP-PNPG possesses more oxygen defects and adsorbed oxygen than ATP-NPG. These properties enhance its electronegativity and make it more conducive to detecting low concentrations of AFB1 through electrochemical sensing technology. Finally, the electrochemical AFB1 immunosensor demonstrates good selectivity, stability, and reusability for detecting AFB1 in corn samples, exhibiting a high recovery rate.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434672","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":"Discovery of Schiff bases as potent antibacterial and antifungal agents†","authors":"Radojko Obradović, Nenad Joksimović, Nenad Janković, Marijana Kosanić, Jovana Matić, Emilija Milović, Goran A. Bogdanović and Jelena Petronijević","doi":"10.1039/D4NJ02683G","DOIUrl":"https://doi.org/10.1039/D4NJ02683G","url":null,"abstract":"<p >In recent years, compounds from the Schiff base group have been intensively studied for their biological activities. Accordingly, a series of Schiff bases were synthesized from substituted aromatic aldehydes (5-chlorosalicylaldehyde) and differently substituted aromatic amines and their antimicrobial activities were evaluated. The molecular identity of compounds was confirmed using various spectroscopic techniques, such as IR and NMR spectroscopy and elemental analysis, and the molecular structure of compound <strong>3k</strong> was determined by single-crystal X-ray analysis. The antimicrobial activity of <strong>3a–3k</strong> compounds was examined in sixteen microorganisms (five species of bacteria and eleven species of fungi) using the microdilution method. Regarding antibacterial activity, a remarkable MIC value (0.0098 mg mL<small>⁻¹</small>) and, therefore, the best activity was displayed against <em>Proteus mirabilis</em> for <strong>3e</strong>, which is even stronger than the most frequently used antibiotic medications. <strong>3f</strong> showed the best antifungal activity against <em>Microsporum gypseum</em>, which is stronger than standard antimycotic fluconazole, and is also an important result considering that <em>Microsporum gypseum</em> can cause dermatophytosis in both humans and animals.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434671","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":"Expression of concern: Fe3O4/PEG-SO3H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides","authors":"Saeideh Mirfakhraei, Malak Hekmati, Fereshteh Hosseini Eshbala and Hojat Veisi","doi":"10.1039/D4NJ90142H","DOIUrl":"https://doi.org/10.1039/D4NJ90142H","url":null,"abstract":"<p >Expression of concern for ‘Fe<small>₃</small>O<small>₄</small>/PEG-SO<small>₃</small>H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides’ by Saeideh Mirfakhraei <em>et al.</em>, <em>New J. Chem.</em>, 2018, <strong>42</strong>, 1757–1761, https://doi.org/10.1039/C7NJ02513K.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nj/d4nj90142h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pd-catalyzed enantioselective hydroesterification of vinyl arenes on water†","authors":"Junhua Li, Yaqian Min and Yian Shi","doi":"10.1039/D4NJ02253J","DOIUrl":"https://doi.org/10.1039/D4NJ02253J","url":null,"abstract":"<p >An efficient Pd-catalyzed asymmetric hydroesterification of vinyl arenes on water is reported. A variety of phenyl 2-arylpropanoates can be obtained in good yields with high b/l ratios and ee's with phenyl formate or CO as a carbonyl source. (<em>R</em>)-DTBM-SEGPHOS was found to be an effective ligand for the reaction under aqueous conditions. The hydrophobicity of the ligand appeared to be crucial to the hydroesterification reaction, which likely proceeded “on water”.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434711","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":"Doxorubicin and iron-doped mesoporous silica nanoparticles for chemodynamic therapy and chemotherapy of breast cancer†","authors":"Le Tang, Mingjian Chen, Dan Wang, Yi He, Guili Ge, Zhaoyang Zeng, Jinyong Shu, Wenjia Guo, Steven Xu Wu and Wei Xiong","doi":"10.1039/D4NJ03184A","DOIUrl":"https://doi.org/10.1039/D4NJ03184A","url":null,"abstract":"<p >Breast cancer is one of the most prevalent malignancies, necessitating the exploration of more effective synergistic treatment strategies to overcome the limitations of conventional therapies. Chemodynamic therapy (CDT) is an innovative antitumor approach that can be combined with chemotherapy to achieve potent synergistic effects. Mesoporous silica nanomaterials (MSNs) are ideal drug delivery vehicles in cancer therapy due to their unique advantages. This study presents an effective and straightforward strategy to design an intelligent drug delivery system (DDS) activated by the tumor-specific weakly acidic microenvironment to achieve efficient cancer treatment. By incorporating the chemotherapeutic drug doxorubicin (DOX) and divalent iron (Fe<small>²⁺</small>) into the unique mesoporous channels of MSNs, we fabricated MSNs@Fe<small>²⁺</small>@DOX. Under weakly acidic pH conditions, the functional components Fe<small>²⁺</small> and DOX of MSNs@Fe<small>²⁺</small>@DOX are gradually released at the tumor site. The released Fe<small>²⁺</small> can then consume hydrogen peroxide (H<small>₂</small>O<small>₂</small>) in tumor cells, increasing the levels of reactive oxygen species (ROS) and lipid peroxides through the Fenton reaction, thereby inducing ferroptosis. The combination of DOX-induced apoptosis and ferroptosis results in further enhanced cancer treatment. <em>In vitro</em> and <em>in vivo</em> experiments demonstrated that MSNs@Fe<small>²⁺</small>@DOX had an excellent therapeutic effect on breast cancer cells and tumor-bearing nude mice. We anticipate that this study will provide a promising biotechnological platform for combined breast cancer treatment by inducing CDT and chemotherapy.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397556","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":"Adsorption–photocatalytic synergistic removal of MB by peanut shell biochar-supported TiO2/Ce–C3N4 heterojunctions","authors":"Xiao-fang Li, Juan-juan Zhang and Xiao-qiang Feng","doi":"10.1039/D4NJ03455D","DOIUrl":"https://doi.org/10.1039/D4NJ03455D","url":null,"abstract":"<p >Based on the excellent adsorption and electron transfer ability of biochar, the combination of a photocatalyst and biochar is an effective strategy to enhance overall photocatalytic activity. Hence, a series of peanut shell biochar-loaded TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> heterojunctions were prepared by adjusting the mass ratio of TiO<small>₂</small> and Ce–C<small>₃</small>N<small>₄</small>, and their structure and properties were intensively characterized by applying various advanced techniques. In addition, their photocatalytic degradation activity was investigated using methylene blue solution (MB) as an organic pollutant model under visible light irradiation. Results showed that the photocatalytic activity of BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> was significantly improved by adsorption–photocatalytic synergic effects. After 30 min of adsorption and 7 min of visible light irradiation, the removal rate for MB reached 100%. The adsorption and photocatalytic degradation processes followed the pseudo-second-order kinetic model and first-order kinetic model, respectively. The rate constant of photocatalytic degradation was 0.3325 min<small>⁻¹</small>, which was 19 times and 16 times that of Ce–C<small>₃</small>N<small>₄</small> and TiO<small>₂</small>, respectively. The introduction of BC and the construction of heterojunctions led to a decrease in the band gap energy of BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small>, which accelerated the separation and migration of photogenerated carriers and effectively inhibited the recombination of photogenerated electron holes. In addition, capture experiments showed that the main active groups for the degradation of MB by BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> were ˙O<small>₂</small><small>⁻</small> and h<small>⁺</small>, and a possible photodegradation mechanism was proposed for the prepared composites. The significantly strengthened photocatalytic activity and excellent stability make BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> a promising dual-function composite for affordable, fast and efficient decontamination of MB from wastewater.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397558","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}