ChemPlusChem最新文献

Tethering Efficiency of RAFT-Synthesised SMA Polymers and Associated SMALPs on Gold Surfaces.

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 RAFT-Synthesised SMA Polymers and Associated SMALPs on Gold Surfaces.","authors":"Michelle D Farrelly, Denis Korneev, Lisandra L Martin, San H Thang","doi":"10.1002/cplu.202500173","DOIUrl":"https://doi.org/10.1002/cplu.202500173","url":null,"abstract":"Styrene maleic acid lipid nanoparticles (SMALPs) arise from amphipathic SMA copolymer encapsulation of membranes into polymer-lipid nanodiscs, structures applied in the native extraction of membrane proteins (MPs). Strategies to immobilise 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) polymerisation was used to synthesise a library of diblock SMA copolymers to determine the optimal sequence for SMALP assembly. The further ability of trithiocarbonate (T) attached (Z)-end-groups, generated by RAFT polymerisation, to tether SMALPs to gold surfaces via sulfur-gold bonds was evaluated. Improved DMPC liposome solubilisation was 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 non-specific gold adhesion. These findings offer a new approach in utilising RAFT end-groups of nanodisc assembling polymers for label-free analysis of MPs.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500173"},"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.

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 Priyadarsini, 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 Priyadarsini, Rojalin Sahu","doi":"10.1002/cplu.202500069","DOIUrl":"https://doi.org/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, we developed a composite material, PANI@NF, by integrating polyaniline (PANI) with agro-waste fibers from date palm leaves, palm leaves, and korai grass. Among the tested composites, PANI@P20% demonstrated outstanding performance, achieving 96.2% lead removal and a sorption capacity of 24.1 mg/g under optimal conditions (pH 6.0, 0.01 g adsorbent, 50 ppm Pb²⁺, 298 K). The adsorption process for PANI@P20% followed a pseudo-second-order kinetic model and conformed well to the Freundlich isotherm, indicating multilayer adsorption on heterogeneous surfaces. Zeta potential analysis further confirmed favourable surface charge interactions at pH 6.0. Additionally, this composite exhibited 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":"e202500069"},"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.

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 Linkers Based Luminescent Cd-MOF for 'Turn-On' EtOH Sensing via RGB-Assisted Smartphone Platform and 'Turn-Off' Fe3+ Monitoring in Biodiesel Specimens.

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 Linkers 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":"https://doi.org/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: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, 30s response time). The EtOH sensing ensues via photo-induced electron transfer (PET) restriction in the MOF, aided by hydrogen bonding with MOF hydroxyls and polarity effects, while Fe3+ quenching arises from absorption competition quenching (ACQ) and electrostatic interactions. The sensor detects EtOH and Fe3+ in pre-treated 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+ was evidenced when analytes were 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":"e202500085"},"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.

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":"https://doi.org/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":" ","pages":"e202400697"},"PeriodicalIF":3.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","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":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile and rapid synthesis of ultra-low-loading Pt-based catalyst boosting electrocatalytic hydrogen production.

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-28 DOI: 10.1002/cplu.202500057

Wenjie Zhai, Jiayi Wang, Ruili Liang, Xiaoli Fan, Xuewei Tao, Jianping He, Yachao Jin, Mingdao Zhang, Li Song

{"title":"Facile and rapid synthesis of ultra-low-loading Pt-based catalyst boosting electrocatalytic hydrogen production.","authors":"Wenjie Zhai, Jiayi Wang, Ruili Liang, Xiaoli Fan, Xuewei Tao, Jianping He, Yachao Jin, Mingdao Zhang, Li Song","doi":"10.1002/cplu.202500057","DOIUrl":"https://doi.org/10.1002/cplu.202500057","url":null,"abstract":"The development of a low-cost hydrogen evolution reaction (HER) catalyst is crucial for the implementation of hydrogen production via water hydrolysis. In this work, we report a facile and rapid electrodeposition method to synthesize an ultralow-loading platinum-based catalyst in a short time of 120 s without any other chemical additive. A functionalized nitrogen-doped carbon nanotube (F-N-CNT) was utilized as a carbon support to controllably and effectively anchor the Pt species. With partially oxidized and unzipped, the surface of F-N-CNT is characterized with zig-zag graphene-like nano-domains, which provide enriched deposition sites for Pt species and act as a buffer preventing the agglomeration and overloading of the Pt. Due to rational design of the exclusive interfacial chemical environment, the optimized Pt/F-N-CNTs catalyst possesses an ultra-low loading of 1.37 wt.% but delivers a prominent HER activity superior to commercial 20 wt.% Pt/C. Therefore, this work provides a novel approach to preparing the Pt/C catalyst with outstanding activity and rational loading.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500057"},"PeriodicalIF":3.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727290","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

Unlocking New Porphyrin Aminoacid Bioconjugates with a Pd-Catalyzed Carboxamide Synthesis.

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-27 DOI: 10.1002/cplu.202500193

Péter Szuroczki, Gábor Mikle, Rafael T Aroso, Zoe A Arnaut, Sara M A Pinto, Rui M B Carrilho, Attila Bényei, László Kollár, Mariette M Pereira

{"title":"Unlocking New Porphyrin Aminoacid Bioconjugates with a Pd-Catalyzed Carboxamide Synthesis.","authors":"Péter Szuroczki, Gábor Mikle, Rafael T Aroso, Zoe A Arnaut, Sara M A Pinto, Rui M B Carrilho, Attila Bényei, László Kollár, Mariette M Pereira","doi":"10.1002/cplu.202500193","DOIUrl":"https://doi.org/10.1002/cplu.202500193","url":null,"abstract":"This study introduces a novel approach for the one-step preparation of carboxamide porphyrin-amino acid bioconjugates via palladium/xantphos-catalyzed aminocarbonylation of 5,15-dibromo-10,20-diphenylporphyrin and 5,10,15,20-tetrakis(4-bromophenyl)porphyrin, under relatively mild conditions (70-100 ºC, 1 atm CO), using natural amino acid methyl ester derivatives as N-nucleophiles. This optimized methodology led to different families of amphiphilic porphyrins bioconjugates containing between one and four amino acids through carboxamide bonds, with isolated yields up to 71%. The resulting porphyrin-amino acid conjugates incorporate glycine, alanine, phenylalanine, and valine, offering tunable molecular weights and functional properties tailored to diverse applications. Comprehensive characterization using 1H-NMR, UV-Visible absorption, fluorescence spectroscopy, and singlet oxygen quantum yields highlights the potential of these conjugates as photosensitizers for photodynamic therapy and microbial inactivation. To the best of our knowledge, this is the first application of a one-step aminocarbonylation reaction for porphyrin functionalization, providing a more straightforward approach compared with traditional multi-step methods.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500193"},"PeriodicalIF":3.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717684","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

pH and Medium Polarity Induced Self-Assembly of Fmoc-Tryptophan into Multiple Superstructures: An Experimental and Theoretical investigations.

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-26 DOI: 10.1002/cplu.202500036

Priyadip Das, Suman Nayak, Nanjundan Raghul, Abhijit Saha, Rabindranath Lo

{"title":"pH and Medium Polarity Induced Self-Assembly of Fmoc-Tryptophan into Multiple Superstructures: An Experimental and Theoretical investigations.","authors":"Priyadip Das, Suman Nayak, Nanjundan Raghul, Abhijit Saha, Rabindranath Lo","doi":"10.1002/cplu.202500036","DOIUrl":"https://doi.org/10.1002/cplu.202500036","url":null,"abstract":"Self-assembly of functionalized molecular building blocks is an effective and resource-saving bottom-up technique to generate multiple superstructures with various functionality and morphologies. Furthermore, the nature of the molecule and the factors controlling the overall self-assembly process are extremely vital in fundamental aspects of self-assembly, which deliver insights into the fabrication of multiple assemblies with specific functionality. The self-assembly of suitably functionalized amino acids leads to the formation of diverse structures with distinct properties, making them ideal bio-organic scaffolds for various applications. The present study reports, the pH and solvent polarity-induced self-assembly of 9-fluorenylmethoxycarbonyl (Fmoc)-Tryptophan into various self-assembled superstructures with morphological individualities, explore the plausible pathway of morphological transformation of Fmoc-Trp into multiple superstructures having a wide range of well-defined morphologies, including spheres, hollow spheres, nanoflowers, nanosheets, nanorods, and cube-like structures, as characterized through conventional microscopic techniques. Detailed UV-Vis, fluorescence, PXRD, and FTIR analyses revealed significant insights into the intermolecular interactions, which trigger the overall self-assembly process. The computational studies, including full geometry optimization and molecular dynamics (MD) simulations, were conducted to investigate the aggregation properties of modified amino acids (Fmoc-Trp). These studies highlighted the crucial role of π-π stacking and hydrogen bonding in tuning the overall self-assembly with morphological variation.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500036"},"PeriodicalIF":3.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707874","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

Multi-Factor Multi-Level Optimization of MOFs-derivatives for Promoting Catalyst fabrication.

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-26 DOI: 10.1002/cplu.202500110

Ruirui Yun, Peiwei Zhao, Yuqing Zhang, Lele Gao, Yu Wang, Yimin Sun, Shizhong Luo

引用次数: 0

Kinetic Studies Reveal that the Secondary Station Impacts the Rate of Motion of Cyclobis(paraquat-p-phenylene) in Out-of-Equilibrium [2]Rotaxanes.

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-26 DOI: 10.1002/cplu.202500154

Mathias S Neumann, Sofie K Jensen, Rikke Frederiksen, Sissel S Andersen, Kasper M Beck, Jan O Jeppesen

{"title":"Kinetic Studies Reveal that the Secondary Station Impacts the Rate of Motion of Cyclobis(paraquat-p-phenylene) in Out-of-Equilibrium [2]Rotaxanes.","authors":"Mathias S Neumann, Sofie K Jensen, Rikke Frederiksen, Sissel S Andersen, Kasper M Beck, Jan O Jeppesen","doi":"10.1002/cplu.202500154","DOIUrl":"https://doi.org/10.1002/cplu.202500154","url":null,"abstract":"Control of movement in artificial molecular machines relies on the formation of out-of-equilibrium states that can subsequently interconvert to their ground states. However, a detailed description of molecular machines that are out of equilibrium is a challenge because they are often too short-lived to be characterized. Herein, we describe the synthesis of two cyclobis(paraquat-p-phenylene) [2]rotaxanes that incorporate a redox-active monopyrrolotetrathiafulvalene unit as the primary station and either a hydroquinone or a xylyl moiety as the secondary station. We show that the bistable [2]rotaxanes can be pushed out of equilibrium by an oxidation/reduction cycle and since a steric barrier is located between the two stations, the out-of-equilibrium states of the [2]rotaxanes can be physically isolated as solids. This allowed us to make detailed 1H NMR spectroscopic and electrochemical investigations of the [2]rotaxanes in both the di-oxidized and un-oxidized states. The outcome of our studies shows that the replacement of the secondary hydroquinone station with a xylyl station had no impact on the thermodynamic properties but had a significant effect on the kinetic properties of the [2]rotaxanes illustrating that the nature of the secondary station can be used to control the speed of [2]rotaxane based molecular machines.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500154"},"PeriodicalIF":3.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707855","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