bluuebunny/crossref_metadata_2025_split huggingface dataset:
Energy Transfer in Mixed Lanthanides Complexes: Toward High‐Performance Pressure Sensors Based on the Luminescence Intensity Ratio
Authors: Zhou Yujiao , Ledoux Gilles , Bois Laurence , Pilet Guillaume , Colombo Margherita , Jeanneau Erwann , Lafarge Lionel , Journet Catherine , Descartes Sylvie , Philippon David 
Published: January 2024

AbstractIn this study, a reversible pressure‐sensing material with high sensitivity is presented. Mixed β‐diketonate complexes of Tb3+ and Eu3+ [(Ln)(acac)3phen] are synthesized with phenanthroline as an ancillary ligand. The organic ligands provide the antenna effect to make the Ln3+ complex excitable at 405 nm. Eu3+ emission results from efficient energy transfer (ET) from Tb3+. Under 405 nm excitation, the emission intensity of Tb3+ decreases whereas the emission intensity of Eu3+ increases with pressure, making this complex a potential pressure sensor based on luminescent‐intensity‐ratio (LIR) up to 700 MPa. This study then discusses the application of this Tb3+/Eu3+ complex for pressure sensing depending on measurement conditions. The addition of the optically neutral ion Y3+ to the system can reduce the impact of pressure‐induced structural defects on the emission, thus improving the reversibility of the LIR variation as a function of pressure. Therefore, a self‐calibrating, reliable, and reversible pressure‐sensing material is proposed here, with remarkable pressure sensitivity compared to a peak shift‐based pressure sensor.
Hydrogen‐bonded organic framework core–shell composite for synergistic antimicrobial therapy
Authors: Xiao Jian , Shaheer Acharya Ramachandra Mahammed , Liu Chen , Liu Tian‐Fu , Cao Rong 
Published: January 2024

AbstractHydrogen‐bonded organic frameworks (HOFs) are crystalline porous materials with permanent voids formed via self‐assembly of organic molecules through hydrogen bonding and intermolecular forces. Further combination of HOFs with functional material would broaden their application horizon but were less explored in existing literature. Herein, a highly porous and photosensitive HOF was successfully coated onto upconversion nanoparticles (UCNPs) to construct a core–shell structure named UNCPs@PFC‐73‐Ni. To enhance spectral overlap and maximize energy conversion efficiency, this study utilized the Er and Tm co‐doped UCNPs, which can effectively convert infrared light into visible light emission thereby exciting the porphyrin shell. Subsequent investigation reveals that the composite exhibits significant photodynamic and photothermal effects under infrared light. Encouraged by its noticeable photoactivity, UCNPs@PFC‐73‐Ni was evaluated as an antibacterial agent against Escherichia coli. Notably, significant antibacterial efficacy was observed, highlighting the potential of UCNPs@PFC‐73‐Ni as an effective antibacterial agent under infrared light irradiation.
Circularly polarized luminescence from a common alkoxy pillar[5]arene and its co‐aggregates with π‐conjugated rods
Authors: Kato Kenichi , Iwano Ryo , Tokuda Shun , Yasuzawa Kiichi , Gon Masayuki , Ohtani Shunsuke , Furukawa Shuhei , Tanaka Kazuo , Ogoshi Tomoki 
Published: January 2024

AbstractCylinder‐shaped macrocycles composed of π‐panels have attracted special attention as one of the best platforms for the development of organic molecule‐based chiroptical materials. Pillar[n]arenes are a class of macrocycles with the advantage of easy preparation but have not been extensively investigated from the perspective of luminescent molecules. However, common alkoxy pillar[n]arenes are fluorescent in non‐haloalkane solvents, showing potential to be used for molecule‐based chiroptical materials. In this work, circularly polarized luminescence (CPL) spectra are reported for a pillar[5]arene with stable planar chirality using tetrahydrofuran (THF) and cyclohexane as solvents, which has been missing for many years. The pillar[5]arene also forms co‐aggregates with 1,4‐bis(phenylethynyl)benzene and 1,4‐bis[(pentafluorophenyl)ethynyl]benzene in THF/H2O mixtures, owing to a hydrophobic effect. The co‐aggregates with the fluorinated π‐rod display a new low‐energy absorption peak and broad emission band as well as intense circular dichroism and CPL signals. Chiral information from the enantiopure pillar[5]arene core is efficiently transmitted to the co‐aggregates with the π‐conjugated rod, leading to the highest dissymmetry factor for CPL (2.9 × 10−2 at 472 nm) among pillar[n]arene‐based CPL materials.
Organic molecules with dual triplet‐harvesting channels enable efficient X‐ray scintillation and imaging
Authors: Zhan Lisi , Xu Yalun , Chen Tianhao , Tang Yang , Zhong Cheng , Lin Qianqian , Yang Chuluo , Gong Shaolong 
Published: January 2024

AbstractOrganic scintillators have recently gained considerable attentions in X‐ray detection for their potential applications in biomedical radiograph and security inspection. However, the weak X‐ray absorption and/or inefficient exciton utilization have limited the development and commercialization of organic scintillators. Currently, high‐performance X‐ray organic scintillators are scarce and organic scintillators with dual triplet‐harvesting channels have not been explored before. Here, we develop several proof‐of‐concept sulfone‐based organic molecules, C1–C7, using different alkoxy chains to manipulate molecular packing mode. These materials exhibit dual triplet‐harvesting channels of thermally activated delayed fluorescence (TADF) and room‐temperature phosphorescence (RTP) in aggregated state. Inspiringly, these molecules display distinct radioluminescence under the X‐ray stimulation. Among them, C6 behaves the highest light yield of 16,558 photons MeV−1. Moreover, clear X‐ray images are demonstrated in both aggregated state and single‐molecule level. High spatial resolutions of 15.0 and 10.6 line pairs per millimeter (lp mm−1) are achieved for rigid and flexible scintillator screens, exceeding most reported organic and conventional inorganic scintillators. These results highlight the great potential of organic molecules with TADF and RTP nature for efficient X‐ray scintillation and imaging.
Low‐temperature‐curable and photo‐patternable benzocyclobutene‐derived aggregation‐induced emission‐active polymer dielectrics
Authors: Yuan Ziwei , Xie Meng , Qian Jianlei , Fan Wenjie , Li Menglu , Guo Liao , Sun Yan , Fu Wenxin 
Published: January 2024

AbstractThe high curing temperatures required for traditional benzocyclobutene (BCB) materials have posed limitations on their applicability in high‐temperature‐sensitive fields. To address this challenge, our work focuses on the synthesis of a novel tetraphenylethylene (TPE)‐functionalized BCB monomer, TPE–BCB, achieved through the introduction of an ether bond onto the BCB's four‐membered ring via Williamson reaction. TPE–BCB demonstrates remarkable low‐temperature curing properties, characterized by a ring‐opening peak temperature of 190°C, representing a reduction of 60°C compared to conventional BCBs. Fully cured TPE–BCB resins exhibit exceptional dielectric and mechanical properties, coupled with minimal water absorption. Additionally, the incorporation of TPE with aggregation‐induced emission characteristics enhances the resins’ luminescence and photolithographic capabilities. Notably, our TPE–BCB resins achieve impressive photolithography performance with a resolution ratio of up to 10 μm. In contrast to conventional BCB‐functionalized resins, TPE–BCB offers the dual advantage of low‐temperature curing and luminescence. This development marks a significant step in the advancement of low‐temperature curing BCB materials and serves as a pioneering example in the realm of multilayer wafer bonding materials.
An artificial chaperone serves a dual role in regulating the assembly of peptides through phase separation
Authors: Li Wang , Zhou Yang , He Sheng , Tong Tianyi , Wang Congsen , Shi Peichen , Li Suixu , Wang Xinchang , Yang Liulin , Cao Xiaoyu , Tian Zhong‐Qun 
Published: January 2024

AbstractIn biological systems, molecular assembly primarily relies on the assistance of molecular chaperones. Inspired by nature, strategies like ‘chaperone‐assisted assembly’ and ‘catalyzed assembly’ have been proposed for the sophisticated control of molecular assembly. Nonetheless, significant challenges remain in the rational design of such systems, calling for a deep understanding of underlying principles. Herein, we demonstrate an artificial chaperone serves a dual role, that is catalyst in low dosages and inhibitor in high dosages, in regulating the supramolecular polymerization of peptides. Low dosages of carboxymethyl cellulose, as the chaperones, catalyze the assembly of Aβ16‐22 peptides into fibrils through multi‐step phase separation, while high dosages trap the peptides into coacervate intermediates and therefore inhibit the fibrillation. Consequently, the quantity of chaperones does not follow the intuition that ‘more is better’ for catalyzing assembly but instead has an optimal molar ratio. Investigation reveals that the interplay and evolution of electrostatic and hydrophobic interactions are the keys to achieving these processes. This study provides insights into the multifaceted roles artificial chaperones may play in a dosage‐dependent manner and enriches the toolkit for efficient and controllable construction of complex assembly systems.
Numerical simulation of jet break‐up using the local front reconstruction method
Authors: Llamas Cristina García , Swami Vivekanand V. , Jennekens Koen K. A. , Buist Kay A. , Kuipers J. A. M. (Hans) , Baltussen Maike W. 
Published: January 2024

AbstractPrimary break‐up of liquid jets is often encountered in industrial processes and is scientifically challenging due to its complexity. An accurate description of the break‐up length and droplet sizes is critical for controlling the jet dynamics and hence the process performance. Despite the extensive research performed on jet break‐up, the existing correlations are not universally applicable to all encountered flow conditions. In this article, we perform Direct Numerical Simulation of a cylindrical liquid jet using the Local Front Reconstruction Method (LFRM) to track the liquid‐gas interface. Experiments are also carried out to validate the simulation results in the same range of Reynolds and Weber numbers. The LFRM method is able to accurately reproduce the experimental break‐up lengths and droplet diameters. The surface waves propagating along the jet are compared with the dominant wavelengths reported in literature. It can be concluded that LFRM can accurately describe the dynamics of laminar jets.
Discovery of anion‐pillared metal–organic frameworks for efficient SO2/CO2 separation via computational screening
Authors: Ren Jiahao , Zeng Wenjiang , Ying Yunpan , Liu Dahuan , Yang Qingyuan 
Published: January 2024

AbstractAdsorptive removal of SO2 from its low‐concentrated gas mixtures is significant to the health and environment. However, the on‐demand discovery of such adsorbents remains a great challenge. Herein, a high‐throughput computational screening for SO2/CO2 separation is performed in an anion‐pillared metal–organic framework (MOF) database. As a proof‐of‐concept, SIFSIX‐7‐Cu, one of the computationally top‐ranked MOFs, is identified and experimentally synthesized for the verification. The high SO2 uptake (14.7 mmol g−1), IAST selectivity (120 for a mixture of 0.2/99.8 molar ratio), and excellent balance between the regenerability (63.5%) and adsorbent performance score (36.3) make it superior to the performance of most reported adsorbents. This work not only provides an excellent candidate for SO2/CO2 separation, but also will facilitate the development of theoretical prediction‐experimental verification methodology in the discovery of novel materials.
Terminal amine‐based hyperbranched polymer‐modified metal oxide particles for improving the stability of water‐based drilling fluids in interaction with shales
Authors: Zheng Xuecheng , Zhou Xuefeng , Chen Siqi , Wei Fan , Huang Mengdie , Hu Ting 
Published: January 2024

AbstractWhen oil and gas extraction is drilled into water‐sensitive shale formations, water intrusion leads to hydration expansion and dispersion of shale clay minerals, which in turn leads to well wall instability. Two nanomaterials, PET and PEF, were synthesized using Hyperbranched polyethyleneimine (HPEI) as shell‐coated metal oxide nanoparticles (MONPs), and the nanomaterials were characterized in terms of molecular structure, thermal stability, and particle size distribution. The blocking and inhibition properties of PET and PEF were tested and investigated by analytical methods such as linear swelling experiments, shale rock chip rolling recovery experiments, and American Petroleum Institute (API) filtration loss experiments, the effects of PET and PEF on the rheology and filter loss reduction of water‐based drilling fuilds (WBDFs) were also investigated. PET and PEF have good blocking and inhibition properties, which somewhat ameliorate the effect of NPs on the rheology of WBDFs, while significantly improving the stability of shale in WBDFs.
Plasma‐assisted surface engineering for value added in starch bioplastics: A study on enhanced surface properties and natural dye immobilization
Authors: Pidhatika Bidhari , Ninan Neethu , Bright Richard , Palms Dennis , Rahmawan Yudi , Vasilev Krasimir 
Published: January 2024

AbstractThis study examines the enhancement of starch‐based bioplastic sheets for immobilizing natural dyes (ND) using plasma processes. The effects of poly(vinyl alcohol) (PVA) as a binder for ND were also assessed. Starch substrates were treated with air plasma, air plus 1,7‐octadiene (OD) plasma, and air plus 2‐methy‐2‐oxazoline (Ox) plasma before immobilizing curcumin and telang NDs, followed by an OD overcoating. Surface morphology, wettability, chemical composition, tensile strength, and surface charge were analyzed. Results showed improved wettability and dye immobilization, particularly for telang with a PVA binder and plasma treatment. OD overcoating prevented dye leaching. Air plasma reduced, while OD plasma maintained the starch's negative charge. XPS analysis indicated increased oxygen and nitrogen presence after air plasma and enhanced aliphatic carbon from OD overcoating. Tensile strength was largely unaffected, but elongation at break was reduced, especially after air and OD plasma treatment.
Fabrication of harsh environment‐tolerant and robust reinforced poly (tetrafluoroethylene) hollow fiber membranes with optimal heat setting technology
Authors: Chen Xu , Chen Kaikai , Yan Haibo , Zhao Wei , Yan Jingjing , Gao Weihong , Xiao Changfa 
Published: January 2024

AbstractThe high‐temperature industrial waste oil treatment has put forward new requirements for membrane materials. Poly (tetrafluoroethylene) (PTFE) is regarded as the excellent membrane material for membrane process, due to its excellent properties. Herein, the reinforced PTFE hollow fiber membrane (PTFE‐HFM) was prepared by the combination of wrapping and heat setting technology. The objection of this study was focusing on the outstanding chemical and thermal resistance of PTEF‐HFM for overcoming harsh waste oil treatment. PTFE‐HFM exhibited better chemical resistance in the experiment of acid and alkali compared to PVDF‐HFM, which the surface of PVDF‐HFM corroded obviously and none of PTFE‐HFM. The pore size and porosity were precisely adjusted by heat setting technology. Firstly, the morphologies of PTFE‐HFM was investigated by scanning electron microscopy, which exhibited favorable interfacial bonding state between PTFE separation layer and supporting layer. Subsequently, the prepared membranes exhibited high‐temperature waste oil permeability of 195 L m−2 h−1 bar−1with only 3% attenuation in long‐term operation. Besides, the rejection of lubricants contained activated carbon also reached to 99%. Overall, the facile preparation and excellent performance of robust reinforced PTFE‐HFM highlights its great potential in treating high‐temperature waste oil.
Bio‐based rigid polyurethane foam composites reinforced with flame retardants: From synthesis to performance evaluation
Authors: Akdogan Emre , Erdem Murat , Kaynak Elif , Ureyen Mustafa Erdem 
Published: January 2024

AbstractThe building and construction industry is under increasing pressure to make insulation materials greener, more sustainable, and less flammable. In this study, sugar beet pulp was liquified under the optimized liquefaction conditions and used as the source of bio‐polyol (SBpol) in the production of bio‐based rigid polyurethane foam (sPUF). In order to improve the flame retardancy, sPUF composites were prepared with the addition of flame retardants; expandable graphite (EG) and/or dimethyl methyl phosphonate (DMMP). The bio‐polyol was used at a fixed ratio of 50 php in sPUF composites whereas the total ratio of flame retardants was fixed at 20 php. The effects of the ratio of EG and/or DMMP on the morphological, physicomechanical, thermal, and flame retardant properties of sPUF composites were evaluated. Although the thermal conductivity values of flame retardant added sPUF composites were increased in comparison to the petroleum‐based foam, the compressive strength values were decreased as the amount of DMMP increased in the flame retardant formulation. Thermogravimetric analysis showed that the onset of decomposition of 20 php DMMP‐containing sPUF composite decreased to 168.3°C. Although the limiting oxygen index (LOI) value of the petroleum‐based PUF was as low as 19.7%, the LOI value of the sPUF/10E/10D foam increased to 24.9% (by about 26%). According to the cone calorimeter results, the peak heat release rate (pHRR) of sPUF was much higher than the petroleum‐based foam. The incorporation of both DMMP and EG could further improve the flame retardant properties. The pHRR value of sPUF/10E/10D was 28.1% lower than that of sPUF. The results have shown that flame retardancy of sPUF composites could be improved by the addition of EG which acts in the condensed phase and DMMP, which acts mainly in the gas phase during burning. Flame retardant incorporated sPUF composites are considered as promising materials for use in insulation applications.
Humans in the loop: Community science and machine learning synergies for overcoming herbarium digitization bottlenecks
Authors: Guralnick Robert , LaFrance Raphael , Denslow Michael , Blickhan Samantha , Bouslog Mark , Miller Sean , Yost Jenn , Best Jason , Paul Deborah L. , Ellwood Elizabeth , Gilbert Edward , Allen Julie 
Published: January 2024

AbstractPremiseAmong the slowest steps in the digitization of natural history collections is converting imaged labels into digital text. We present here a working solution to overcome this long‐recognized efficiency bottleneck that leverages synergies between community science efforts and machine learning approaches.MethodsWe present two new semi‐automated services. The first detects and classifies typewritten, handwritten, or mixed labels from herbarium sheets. The second uses a workflow tuned for specimen labels to label text using optical character recognition (OCR). The label finder and classifier was built via humans‐in‐the‐loop processes that utilize the community science Notes from Nature platform to develop training and validation data sets to feed into a machine learning pipeline.ResultsOur results showcase a >93% success rate for finding and classifying main labels. The OCR pipeline optimizes pre‐processing, multiple OCR engines, and post‐processing steps, including an alignment approach borrowed from molecular systematics. This pipeline yields >4‐fold reductions in errors compared to off‐the‐shelf open‐source solutions. The OCR workflow also allows human validation using a custom Notes from Nature tool.DiscussionOur work showcases a usable set of tools for herbarium digitization including a custom‐built web application that is freely accessible. Further work to better integrate these services into existing toolkits can support broad community use.
The prediction‐oriented middle ground between behaviorist and cognitivist consumer research
Authors: Cohen Doron , Erev Ido 
Published: January 2024

AbstractClassic behaviorist and cognitivist approaches to consumer research are based on very different assumptions concerning the nature of the cognitive processes that drive consumption. Classic behaviorist research assumes that the underlying cognitive processes are extremely complex, and the effort to model them is not likely to lead to useful insights. In contrast, classic cognitivist research assumes that the underlying cognitive processes can be precisely captured with simple cognitive models. The current paper highlights the value of a middle ground. This middle ground favors the assumption that while the underlying processes are highly complex, their impact can be approximated with prediction‐oriented cognitive models. The potential of this approach is illustrated with a review of previous research demonstrating how a simple prediction‐oriented model can shed light on four interesting consumption puzzles: Buying and not using, the backfiring of certain safety devices, too much and insufficient checking, and underconsumption and overconsumption.
Instilling label confidence in the minds of consumers: The role of sustainability skepticism
Authors: Cho Yoon‐Na , Ye Christine , Kim Yuna 
Published: January 2024

AbstractDrawing from the persuasion knowledge model, the present research demonstrates how providing comparable sustainability labels (i.e., labels with numeric sustainability level information) can help consumers make more sustainable choices at the point of purchase for consumer packaged goods. We provide empirical evidence from a field experiment and an online experiment to show how the presence and source of sustainability labeling affect consumer perceptions. Notably, we show that highly skeptical consumers are influenced by the source of labeling, whereas less skeptical consumers are less affected by the source but strongly influenced by the presence of labeling. We also demonstrate both the boundary condition and underlying mechanism in the sustainability labeling process. Our findings provide insights for practitioners and policymakers interested in presenting sustainability information at the retail shelf to inform and influence consumer decisions.
Bovine mammary epithelial cells can grow and express milk protein synthesis genes at reduced fetal bovine serum concentration
Authors: Sattari Zahra , Kjærup Rikke Brødsgaard , Rasmussen Martin Krøyer , Yue Yuan , Poulsen Nina Aagaard , Larsen Lotte Bach , Purup Stig 
Published: January 2024

AbstractMilk proteins produced by lactating cells isolated from bovine mammary tissue can offer a sustainable solution to the high protein demand of a global growing population. Serum is commonly added to culture systems to provide compounds necessary for optimal growth and function of the cells. However, in a cellular agricultural context, its usage is desired to be decreased. This study aims at examining the minimum level of fetal bovine serum (FBS) required for the growth and functionality of bovine mammary epithelial cells (MECs). The cells were isolated from dairy cows in early and mid‐lactation and cultured in reduced concentrations of FBS (10%, 5%, 1.25%, and 0%). Real‐time cell analysis showed a significant effect of lactation stage on growth rate and 5% FBS resulted in similar growth rate as 10% while 0% resulted in the lowest. The effect of reducing FBS on cell functionality was examined by studying the expressions of selected marker genes involved in milk protein and fat synthesis, following differentiation. The gene expressions were not affected by the level of FBS. A reduction of FBS in the culture system of MEC, at least down to 5%, does not assert any negative effect on the growth and expression levels of studied genes. As the first attempt in developing an in‐vitro model for milk component production using MEC, our results demonstrate the potential of MEC to endure FBS‐reduced conditions.