ChemPlusChem最新文献_第7页

Adsorption of Mercury in Aqueous Solutions by Functionalized Cellulose Extracted from Soybean Hulls. 大豆壳功能化纤维素对汞的吸附研究。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-09 DOI: 10.1002/cplu.202400707

Monica Rigoletto, María Rapp, Amaya Arencibia, María-José López-Muñoz, Maria Laura Tummino, Nieves Fernández de Paz, Enzo Laurenti

{"title":"Adsorption of Mercury in Aqueous Solutions by Functionalized Cellulose Extracted from Soybean Hulls.","authors":"Monica Rigoletto, María Rapp, Amaya Arencibia, María-José López-Muñoz, Maria Laura Tummino, Nieves Fernández de Paz, Enzo Laurenti","doi":"10.1002/cplu.202400707","DOIUrl":"https://doi.org/10.1002/cplu.202400707","url":null,"abstract":"The presence of potentially toxic elements (PTEs) in drinking water and the food chain is a well-known hazard to human health. Among PTEs, mercury is particularly dangerous for humans and other living organisms due to its wider effects on internal organs. Hg contamination is a critical issue for water bodies used for aquaculture, making its elimination mandatory. Among the techniques proposed for Hg removal, adsorption is advantageous because of its versatility, absence of secondary pollution, and relatively low cost, especially when adsorbents can be obtained from waste materials. In this article, adsorbent materials are synthesized by introducing thiols and primary amino groups into cellulose fibers isolated from soybean hulls. After characterization, the ability of the materials to remove mercury from both ultrapure and aquaculture water solutions is tested. The results confirm the affinity of Hg for thiol groups, leading to the adsorption of 44 mg(Hg)/g in a wide pH range. The amino-modified material adsorbs ≈50% Hg less than the thiol-functionalized one. Test in real water shows that organic matter and salts influence the Hg adsorption process, without affecting the overall efficiency. Finally, in real water, a final concentration below the Hg legal limit for human consumption (1 μg L-1) is found.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2400707"},"PeriodicalIF":3.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in Isotope Labeling for Solution Nucleic Acid Nuclear Magnetic Resonance Spectroscopy. 溶液核酸核磁共振光谱同位素标记的研究进展。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-09 DOI: 10.1002/cplu.202400752

Stefan Hilber, Solomon Kojo Attionu, Theodore Kwaku Dayie, Christoph Kreutz

{"title":"Advances in Isotope Labeling for Solution Nucleic Acid Nuclear Magnetic Resonance Spectroscopy.","authors":"Stefan Hilber, Solomon Kojo Attionu, Theodore Kwaku Dayie, Christoph Kreutz","doi":"10.1002/cplu.202400752","DOIUrl":"10.1002/cplu.202400752","url":null,"abstract":"The availability of structural biology methods for nucleic acid still lags behind that of proteins, as evidenced by the smaller number of structures (DNA: 2513, RNA: 1899, nucleic acid-protein complexes: 13 842, protein: 196 887) deposited in the protein database. The skewed ratio of nucleic acid structures, relative to proteins (≈1:50), is inverted with respect to the cellular output of RNA and proteins in higher organisms (≈50:1). While nuclear magnetic resonance (NMR) is an attractive biophysical tool capable of bridging this gap at the molecular level, the conformational flexibility, line broadening, and low chemical shift dispersion of nucleic acids have made the NMR method challenging, especially for structures larger than 35 nucleotides. The incorporation of NMR-active isotopes is a f strategy to combat these problems. Significant strides made to push the size limits of nucleic acid structures solved by NMR using chemoenzymatic 13C- methyl and aromatic 15N- and 19F-13C-labeling are reviewed and challenges and opportunities are evaluated. Combining these isotopic labeling patterns with superior NMR spectroscopic properties, and new DNA/RNA synthesis methods (palindrome-nicking-dependent amplification and segmental labeling and site-specific modifications by template-directed tension), may stimulate advances in NMR studies of large DNA/RNA and their complexes with important biological functions.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2400752"},"PeriodicalIF":3.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chiral Boron Dipyrromethene Dye with Acid-Responsive Near-Infrared Emission and Chiral Optical Behavior. 具有酸响应性近红外发射和手性光学行为的手性硼二吡咯甲烷染料。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-08 DOI: 10.1002/cplu.202500237

Chunyan Song, Zhenhui Wei, Yongsheng Zhang, Muqian Li, Junbo Gong

引用次数: 0

Harnessing Fluorine Chemistry: Strategies for Per- and Polyfluoroalkyl Substances Removal and Enrichment. 利用氟化学：PFAS去除和富集策略。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-07 DOI: 10.1002/cplu.202400784

Anne Lobitz, Alex Steuber, Shang Jia, Lei Guo

引用次数: 0

Cooperation of Dual Organic Spacers and A Site Cations for High-Performance Quasi-2D Ruddlesden-Popper Perovskite Solar Cells. 双有机间隔阳离子和A位阳离子协同制备高性能准二维ruddlesen - popper钙钛矿太阳能电池。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-07 DOI: 10.1002/cplu.202500169

Chunlong Yuan, Zetan Zhang, Shiying Tang, Yunsheng Gou, Pan Zhao, Haimin Li, Hua Yu

{"title":"Cooperation of Dual Organic Spacers and A Site Cations for High-Performance Quasi-2D Ruddlesden-Popper Perovskite Solar Cells.","authors":"Chunlong Yuan, Zetan Zhang, Shiying Tang, Yunsheng Gou, Pan Zhao, Haimin Li, Hua Yu","doi":"10.1002/cplu.202500169","DOIUrl":"10.1002/cplu.202500169","url":null,"abstract":"Ruddlesden-Popper (RP) quasi-two-dimensional (2D) perovskites exhibit enhanced stability compared to their three-dimensional (3D) counterparts due to the incorporation of bulky organic spacers. However, their efficiency is relatively low owing to the large exciton binding energy and quantum confinement effects associated with these organic spacers. Herein, a diversified cation regulation strategy is developed by adjusting both the spacers and A-site cations, achieving the fabrication of mixed 4-fluoro-phenethylammonium (F-PEA+)/n-butylammonium (BA+) and formamidinium (FA+)/methylammonium (MA+) n = 4 quasi-2D RP perovskite solar cells. Primarily, the introduction of F-PEA+ induces an ordered distribution of the film from low-n to high-n phases, resulting in enhanced crystallinity, larger grain size, fewer cracks, and voids as well as high-quality perovskite films with preferred orientation. Furthermore, the incorporation of FA+ reduces the bandgap of the perovskite, facilitating exciton dissociation and enhancing carrier transport capabilities. Ultimately, under the cooperation effect, the obvious elevation in the efficiency of NiOx-based (BA0.9F-PEA0.1)2(MA0.8FA0.2)3Pb4I13 n = 4 quasi-2D RP perovskite solar cells from 12.51 to 15.68% is achieved. Additionally, the unencapsulated devices retain 80.4% of initial efficiency after 1100 h of heating at 60 °C in ambient air with 40% relative humidity, demonstrating excellent thermal and moisture stability.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500169"},"PeriodicalIF":3.0,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143794272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tethering Efficiency of Reversible Addition-Fragmentation Chain Transfer-Synthesized Styrene Maleic Acid Polymers and Associated Styrene Maleic Acid Lipid Nanoparticles on Gold Surfaces. raft合成的SMA聚合物及其相关SMALPs在金表面的系结效率。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-03 DOI: 10.1002/cplu.202500173

Michelle D Farrelly, Denis Korneev, Lisandra L Martin, San H Thang

{"title":"Tethering Efficiency of Reversible Addition-Fragmentation Chain Transfer-Synthesized Styrene Maleic Acid Polymers and Associated Styrene Maleic Acid Lipid Nanoparticles on Gold Surfaces.","authors":"Michelle D Farrelly, Denis Korneev, Lisandra L Martin, San H Thang","doi":"10.1002/cplu.202500173","DOIUrl":"10.1002/cplu.202500173","url":null,"abstract":"Styrene maleic acid lipid nanoparticles (SMALPs) arise from amphipathic styrene maleic acid (SMA) copolymer encapsulation of membranes into polymer-lipid nanodiscs, structures applied in the native extraction of membrane proteins (MPs). Strategies to immobilize SMALPs via their polymer belt onto surfaces allow the biophysical study of MPs without direct protein-surface anchoring. In this work, reversible addition-fragmentation chain transfer (RAFT) polymerization is used to synthesize a library of diblock SMA copolymers to determine the optimal sequence for SMALP assembly. The further ability of trithiocarbonates (T) and attached (Z)-end-groups, generated by RAFT polymerization, to tether SMALPs to gold surfaces via sulfur-gold bonds is evaluated. Improved DMPC liposome solubilization is achieved with a hydrophilic (Z)-end-group, shorter polystyrene block and lower molecular weight for diblock R-(Sty)-b-(Sty-alt-MA)-T-Z polymers. Quartz crystal microbalance with dissipation monitoring (QCM-D) and atomic force microscopy (AFM) revealed that diblock SMA polymers bound to gold as a micellular film, irrespective of the presence of the trithiocarbonate group. SMALPs, however, showed an enhanced gold affinity when terminated by a trithiocarbonate and hydrophilic RAFT (Z)-end-group compared to end-group removed SMALPs, the latter exhibiting nonspecific gold adhesion. These findings offer a new approach in utilizing RAFT end-groups of nanodisc assembling polymers for label-free analysis of MPs.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500173"},"PeriodicalIF":3.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In Situ Polymerization of Polyaniline on Natural Fibers for Effective Lead Ion Removal from Aqueous Solutions. 聚苯胺在天然纤维上的原位聚合对水溶液中铅离子的有效去除。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-03 DOI: 10.1002/cplu.202500069

Subrat Swain, Jagannath Panda, Bebina Swain, Debadutta Samal, Jaykishon Swain, Anulipsa Priyadarshini, Rojalin Sahu

{"title":"In Situ Polymerization of Polyaniline on Natural Fibers for Effective Lead Ion Removal from Aqueous Solutions.","authors":"Subrat Swain, Jagannath Panda, Bebina Swain, Debadutta Samal, Jaykishon Swain, Anulipsa Priyadarshini, Rojalin Sahu","doi":"10.1002/cplu.202500069","DOIUrl":"10.1002/cplu.202500069","url":null,"abstract":"The contamination of water with heavy metals, particularly lead (Pb2 +), has become a critical environmental and public health issue due to increasing industrialization and urbanization. Lead pollution has contributed to severe health problems, impacting over 10,000 people in recent years. In response to this growing concern, a composite material, PANI@NF, is developed by integrating polyaniline (PANI) with agrowaste fibers from date palm leaves, palm leaves, and korai grass. Among the tested composites, PANI@P20% demonstrates outstanding performance, achieving 96.2% lead removal and a sorption capacity of 24.1 mg g-1 under optimal conditions (pH 6.0, 0.01 g adsorbent, 50 ppm Pb2 +, 298 K). The adsorption process for PANI@P20% follows a pseudo-second-order kinetic model and conforms well to the Freundlich isotherm, indicating multilayer adsorption on heterogeneous surfaces. Zeta potential analysis further confirms favorable surface charge interactions at pH 6.0. Additionally, this composite exhibits excellent reusability, maintaining high efficiency over eight adsorption-desorption cycles. This work underscores the potential of using low-cost, biodegradable natural fibers as sustainable adsorbents for effective lead removal, offering a promising solution for water treatment and environmental preservation.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500069"},"PeriodicalIF":3.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-Phase Epoxidations with Micellar Catalysts: Insights, Limitations, and Perspectives. 胶束催化剂的两相环氧化：见解，局限性和观点。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-01 DOI: 10.1002/cplu.202500122

Markus Hegelmann, Mirza Cokoja

引用次数: 0

Isophthalate and N-Chelating Linker-Based Luminescent Cd-MOF for "Turn-On" EtOH Sensing via RGB-Assisted Smartphone Platform and "Turn-Off" Fe³⁺ Monitoring in Biodiesel Specimens. 基于间苯二甲酸酯和n螯合连接剂的发光Cd-MOF基于rgb辅助智能手机平台的“开启”EtOH传感和“关闭”生物柴油样品中的Fe3+监测。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-01 DOI: 10.1002/cplu.202500085

Rajeshwari Pal, Udayan Mondal, Kumari Raksha, Priyabrata Banerjee

{"title":"Isophthalate and N-Chelating Linker-Based Luminescent Cd-MOF for \"Turn-On\" EtOH Sensing via RGB-Assisted Smartphone Platform and \"Turn-Off\" Fe3+ Monitoring in Biodiesel Specimens.","authors":"Rajeshwari Pal, Udayan Mondal, Kumari Raksha, Priyabrata Banerjee","doi":"10.1002/cplu.202500085","DOIUrl":"10.1002/cplu.202500085","url":null,"abstract":"Monitoring trace solvent and metal adulteration in biodiesel is crucial for quality control and commercialization. This study explores a mesoporous Cd(II)-MOF for dual-mode fluorescence sensing: \"turn-on\" detection of EtOH and \"turn-off\" monitoring of Fe3+ in aqueous and biodiesel samples. Synthesized using N-chelating, π-conjugated 2,2'-bipyridine and μ3-η1,η1,η2 bridging 5-hydroxyisophthalic acid, the MOF exhibits high phase purity, lamellar rod morphology, and high thermal stability, attributed to its robust framework, reinforced by supramolecular H-bonding and interlayer π-π stacking interactions. The MOF's blue luminescence enables rapid detection of EtOH (6.27-fold enhancement, LOD: 6.33 ppm, 40s response time) and Fe3+ (>90% quenching, LOD: ≈1.17 μM, KSV: 1.318 × 105 M- 1, 30 s response time). The EtOH sensing ensues via restriction of photo-induced electron transfer in the MOF, aided by hydrogen bonding with MOF hydroxyls and polarity effects, while Fe3+ quenching arises from absorption competition quenching and electrostatic interactions. The sensor detects EtOH and Fe3+ in pretreated biodiesels derived from Jatropha and waste cooking oil (recovery: 78-90% and 73-75%, respectively). Further, a 4.89-fold \"turn-on\" for EtOH and 81% quenching for Fe3+ is evidenced when analytes are directly added into untreated Jatropha biodiesel. A smartphone-based RGB calibration further enhances real-time ethanol analysis, ensuring practical applicability.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500085"},"PeriodicalIF":3.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lignin Derivatives in Chestnut Wood Hydrochar: Mild Solvolysis and Characterization 板栗木质素衍生物：温和溶剂分解及表征。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-28 DOI: 10.1002/cplu.202400697

Valeria Pierpaoli, Miha Grilc, Giorgio Tofani, Blaž Likozar, Edita Jasiukaitytė-Grojzdek, Enrico Segoloni, Marco Barbanera, Manuela Romagnoli

{"title":"Lignin Derivatives in Chestnut Wood Hydrochar: Mild Solvolysis and Characterization","authors":"Valeria Pierpaoli, Miha Grilc, Giorgio Tofani, Blaž Likozar, Edita Jasiukaitytė-Grojzdek, Enrico Segoloni, Marco Barbanera, Manuela Romagnoli","doi":"10.1002/cplu.202400697","DOIUrl":"10.1002/cplu.202400697","url":null,"abstract":"Castanea sativa plays a significant role in the Italian forestry sector, covering 7.5 % of Italy's land. This biomass resource includes significant volumes of wood processing residues: in recent years, its exploitation has shifted from fuel production to high-value applications, focusing on lignocellulosic biomass fractionation to obtain biopolymers. Lignin, the most abundant aromatic biopolymer, has gained attention due to its potential for various industrial uses. Amid chemical treatments, hydrothermal treatment offers a sustainable approach to generate energy and chemicals simultaneously.As depicted in Figure 1, the goal of this study is to evaluate the hydrochar from the hydrothermal treatment of chestnuts to determine the presence of lignin or resulting derivatives which can be isolated for high-value applications. Virgin wood and detannized wood were processed in a hydrothermal reactor at 200 °C. The resulting hydrochar was characterized using FTIR and 2D NMR for functional group analysis, SEM for char morphology, HPSEC for molecular weight determination, TGA for thermal properties and the Folin Test to confirm the preservation of lignin structure post-treatment. Preliminary results indicate lignin is present in certain fractions, suggesting the potentiality of this biomass for lignin production.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":"90 5","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cplu.202400697","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0