{"title":"N-Aryl or N-Alkyl Pyridinium-Substituted Excited-State Intramolecular Proton Transfer Fluorophores.","authors":"Timothée Stoerkler, Gilles Ulrich, Adèle D Laurent, Denis Jacquemin, Julien Massue","doi":"10.1002/cplu.202500138","DOIUrl":"https://doi.org/10.1002/cplu.202500138","url":null,"abstract":"<p><p>In this article, it describes the synthesis of a series of fluorophores consisting of N-alkyl or N-aryl pyridinium groups connected at different positions of a 2-(2'-hydroxyphenyl)benzoxazole scaffold and the exploration of the photophysical properties in solution (dichloromethane) and in the solid state, as amorphous powders. All dyes display a bathochromically shifted fluorescent transition from an excited keto state, formed after excited-state intramolecular proton transfer process. A full chemical engineering study was performed by changing the nature of the substitution at the pyridinium site (alkyl or aryl), the position of the pyridinium substitution and the nature of the counterion (six examples). The nature of the radiative transitions observed in these fluorescent dyes was confirmed by Time-dependent density functional theory (TD-DFT) calculations.</p>","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500138"},"PeriodicalIF":3.0,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952188","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}
ChemPlusChemPub Date : 2025-04-14DOI: 10.1002/cplu.202500168
Jingjing Zhao, Cui Wang, Nuoya Li, Liyan Chen, Di Wu, Jianlong Xia
{"title":"Methylthiolation Modified Bay-Annulated Indigo Derivatives for Enhanced Performance in Organic Field-Effect Transistors.","authors":"Jingjing Zhao, Cui Wang, Nuoya Li, Liyan Chen, Di Wu, Jianlong Xia","doi":"10.1002/cplu.202500168","DOIUrl":"https://doi.org/10.1002/cplu.202500168","url":null,"abstract":"<p><p>Indigo is one of the most well-known natural dyes and has attracted significant research interest due to its low cost and exceptional stability. Notably, bay-annulated indigo (BAI) has been reported as an effective electron acceptor and is widely used in various applications. Herein, a methylthio-substituted BAI derivative, compound 1, is successfully synthesized and the impact of methylthio substitution on its optoelectronic properties is investigated. UV-vis absorption and fluorescence spectra reveal that compound 1 displays a significant redshift compared to the nonmethylthio-substituted compound 2. Cyclic voltammetry measurements and density functional theory calculations indicate that compound 1 has a narrower highest occupied molecular orbital and lowest unoccupied molecular orbital gap, demonstrating the prominent influence of methylthio side chains in modulating molecular electronic properties. Importantly, the organic field-effect transistor device based on compound 1 exhibits a hole mobility 3.5 times higher than that of the nonmethylthio-substituted compound 2. Furthermore, atomic force microscopy characterization reveals the formation of needle-like crystallites in the compound 1 film after annealing, whereas compound 2 forms an amorphous thin film. These results suggest that methylthiolation is an effective strategy for tuning intermolecular interactions in novel BAI derivatives, and compound 1 is a promising hole-transporting material.</p>","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500168"},"PeriodicalIF":3.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143954124","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}
ChemPlusChemPub Date : 2025-04-14DOI: 10.1002/cplu.202400731
Sobhana Reshma, Elambalassery G Jayasree
{"title":"Carbonyl and Carbonyl-N-Heterocyclic Carbine-Ligated Iron Complexes as Catalysts for Markovnikov-Selective Alkyne Hydrothiolation and Hydroselenation Reactions: A Mechanistic Study.","authors":"Sobhana Reshma, Elambalassery G Jayasree","doi":"10.1002/cplu.202400731","DOIUrl":"https://doi.org/10.1002/cplu.202400731","url":null,"abstract":"<p><p>In the present work, iron carbonyl-catalyzed hydrothiolation/hydroselenation of alkynes has been studied computationally. The catalytic efficiency of inexpensive iron carbonyls and three iron-N-heterocyclic carbene (NHC)-based complexes-Fe(NHC)<sub>ax</sub>(CO)<sub>4</sub>, Fe(NHC)<sub>eq</sub>(CO)<sub>4</sub>, and Fe(aNHC)<sub>ax</sub>(CO)<sub>4</sub>-is evaluated. The results demonstrate significantly reduced energy barriers for the catalytic reactions compared to uncatalyzed gas-phase reactions. A high degree of regioselectivity for the Markovnikov product is observed, validating the effectiveness of these complexes in producing Markovnikov vinyl sulfides/selenides. An alternative catalytic pathway involving alkyne insertion into the MS/Se and MH bonds is also explored, and it is found that the catalyst regio- and stereoselectively leads to the formation of Markovnikov product in MS/Se insertion pathway and Z-anti-Markovnikov product in MH insertion pathway, consistent with the existing literature reports.</p>","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2400731"},"PeriodicalIF":3.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143954859","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}
ChemPlusChemPub Date : 2025-04-11DOI: 10.1002/cplu.202400783
Youfeng Yue, Akihiro Moriyama, Marie Mita, Yue Yu
{"title":"Sustainable Synthesis, Characterization, Cellular Effects of Gold Nanoparticles and Their Applications as Therapeutics in Cancer Therapy.","authors":"Youfeng Yue, Akihiro Moriyama, Marie Mita, Yue Yu","doi":"10.1002/cplu.202400783","DOIUrl":"https://doi.org/10.1002/cplu.202400783","url":null,"abstract":"<p><p>In recent years, gold nanoparticles (AuNPs) have attracted much attention due to their extensive applications in fields such as biomedicine, electronics, catalysis, and environmental science. However, traditional chemical methods for AuNPs synthesis present certain challenges, such as the use of harsh chemicals and high energy consumption. These limitations have led to the development of alternative, sustainable synthesis methods that are efficient, cost-effective, and environmentally friendly. These methods focus on the principle of green chemistry, utilizing renewable biomass sources (e.g., plant tissues, bacteria, fungi, and algae) and nontoxic solvents to minimize environmental impact. Biomolecules derived from biomass, such as polyphenols, proteins, and unsaturated fatty acids, enable the synthesis of AuNPs under mild and eco-friendly conditions. This review provides a comprehensive overview of recent advancements in the sustainable synthesis and applications of AuNPs. It summarizes the specific active compounds that drive the reduction and stabilization of AuNPs. It also explores the characterization techniques and underlying mechanisms involved in synthesis. Furthermore, their cellular effects and long-term safety are discussed, along with their extensive applications in biomedical fields, including bioimaging and cancer therapies. Finally, the potential of AuNPs is summarized, highlighting future perspectives as well as emerging opportunities and challenges in biological applications.</p>","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2400783"},"PeriodicalIF":3.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952075","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}
ChemPlusChemPub Date : 2025-04-09DOI: 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":"10.1002/cplu.202400707","url":null,"abstract":"<p>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<sup>−1</sup>) is found.</p>","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":"90 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cplu.202400707","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":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPlusChemPub Date : 2025-04-09DOI: 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":"<p><p>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 <sup>13</sup>C- methyl and aromatic <sup>15</sup>N- and <sup>19</sup>F-<sup>13</sup>C-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.</p>","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}
ChemPlusChemPub Date : 2025-04-08DOI: 10.1002/cplu.202500237
Chunyan Song, Zhenhui Wei, Yongsheng Zhang, Muqian Li, Junbo Gong
{"title":"Chiral Boron Dipyrromethene Dye with Acid-Responsive Near-Infrared Emission and Chiral Optical Behavior.","authors":"Chunyan Song, Zhenhui Wei, Yongsheng Zhang, Muqian Li, Junbo Gong","doi":"10.1002/cplu.202500237","DOIUrl":"10.1002/cplu.202500237","url":null,"abstract":"<p><p>A chiral boron dipyrromethene (BODIPY) dye, denoted as (R)-2, incorporating near-infrared (NIR) emission and chiral optical behavior, is synthesized. The dye is engineered by coupling polyethylene glycol chains with R-stereogenic centers to a donor-acceptor BODIPY core through a Suzuki coupling reaction. This modification significantly enhances the solubility and facilitates efficient chirality transfer resulting in distinct circular dichroism (CD) activity, which is quite remarkable in organic small molecule solutions. Furthermore, acid-triggered protonation of the dye leads to a bathochromic shift in the maximum absorption wavelength (from 633 to 664 nm) and an increase in NIR emission intensity, which is attributed to the enhanced intramolecular charge transfer in solution.</p>","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500237"},"PeriodicalIF":3.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143802175","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}
ChemPlusChemPub Date : 2025-04-07DOI: 10.1002/cplu.202400784
Anne Lobitz, Alex Steuber, Shang Jia, Lei Guo
{"title":"Harnessing Fluorine Chemistry: Strategies for Per- and Polyfluoroalkyl Substances Removal and Enrichment.","authors":"Anne Lobitz, Alex Steuber, Shang Jia, Lei Guo","doi":"10.1002/cplu.202400784","DOIUrl":"10.1002/cplu.202400784","url":null,"abstract":"<p><p>Per- and polyfluoroalkyl substances (PFAS) are ubiquitous, recalcitrant, bioaccumulative, and toxic. Effective concentration technologies are essential for remediating these compounds, a major focus of environmental science and engineering today. This review provides a comprehensive overview of PFAS, from fundamental chemistry to current research, encompassing fluorine chemistry, PFAS synthesis, and their applications. The review specifically thoroughly examines how fluorine chemistry can be utilized to enhance PFAS removal and enrichment, highlighting examples of aromatic/direct fluorination and aliphatic per- and polyfluorination, where the latter induces the fluorous effect. A comprehensive list of reactions used to design or modify PFAS sorbents is summarized, serving as a resource for ongoing research. Finally, insights are offered into how fluorine chemistry can be studied and employed to further improve PFAS characterization and management.</p>","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2400784"},"PeriodicalIF":3.0,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801952","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}
{"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":"<p><p>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<sup>+</sup>)/n-butylammonium (BA<sup>+</sup>) and formamidinium (FA<sup>+</sup>)/methylammonium (MA<sup>+</sup>) n = 4 quasi-2D RP perovskite solar cells. Primarily, the introduction of F-PEA<sup>+</sup> 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<sup>+</sup> 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 NiO<sub>x</sub>-based (BA<sub>0.9</sub>F-PEA<sub>0.1</sub>)<sub>2</sub>(MA<sub>0.8</sub>FA<sub>0.2</sub>)<sub>3</sub>Pb<sub>4</sub>I<sub>13</sub> 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.</p>","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}
ChemPlusChemPub Date : 2025-04-03DOI: 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":"<p><p>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.</p>","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}