bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phosphine‐Oxide‐Balanced Intra‐ and Interchain Through‐Space Charge Transfer in Thermally Activated Delayed Fluorescence Polymers: Beyond 30% External Quantum Efficiency
Authors: Xin Ying , Zhu Yonglin , Chi Ruixin , Duan Chunbo , Yan Pengfei , Han Chunmiao , Xu Hui 
Published: July 2023

AbstractThrough‐space charge transfer (TSCT) is crucial for developing highly efficient thermally activated delayed fluorescence polymers. The balance of intra‐ and interchain TSCT can markedly improve performance, but it is still a big challenge. In this work, an effective strategy for “intra‐ and interchain TSCT balance” is demonstrated by way of a series of non‐conjugated copolymers containing a 9,9‐dimethylacridine donor and triazine‐phosphine oxide (PO)‐based acceptors. Steady‐state and transient emission spectra indicate that compared to the corresponding blends, the copolymers can indeed achieve balanced intra‐ and interchain TSCT by accurately optimizing the inductive and steric effects of the acceptors. The DPOT acceptor with the strongest electron‐withdrawing ability and the second bigger steric hindrance endows its copolymers with state‐of‐the‐art photoluminescence and electroluminescence quantum efficiencies beyond 95% and 32%, respectively. This demonstrates that, compared to other congeners, the synergistic inductive and steric effects effectively enhance TSCT in DPOT‐based copolymers for radiation, and suppress singlet and triplet quenching. The record‐high efficiencies of its devices make this kind of copolymers hold the potential for low‐cost, large‐scale, and high‐efficiency applications.
Reversible Crosslinking of Commodity Polymers via Photocontrolled Metal–Ligand Coordination for High‐Performance and Recyclable Thermoset Plastics
Authors: Huang Yun‐Shuai , Zhou Yang , Zeng Xiaolong , Zhang Dachuan , Wu Si 
Published: July 2023

AbstractThermoset plastics, highly desired for their stability, durability, and chemical resistance, are currently consumed in over 60 million tons annually across the globe, but they are difficult to recycle due to their crosslinked structures. The development of recyclable thermoset plastics is an important but challenging task. In this work, recyclable thermoset plastics are prepared by crosslinking a commodity polymer, polyacrylonitrile (PAN), with a small percentage of a Ru complex via nitrile–Ru coordination. PAN is obtained from industry and the Ru complex is synthesized in one step, which enables the production of recyclable thermoset plastics in an efficient way. In addition, the thermoset plastics exhibit impressive mechanical performance, boasting a Young's modulus of 6.3 GPa and a tensile strength of 109.8 MPa. Moreover, they can be de‐crosslinked when exposed to both light and a solvent and can then be re‐crosslinked upon heating. This reversible crosslinking mechanism enables the recycling of thermosets from a mixture of plastic waste. The preparation of recyclable thermosets from other commodity polymers such as poly(styrene‐coacrylonitrile) (SAN) resins and polymer composites through reversible crosslinking is also demonstrated. This study shows that reversible crosslinking via metal–ligand coordination is a new strategy for designing recyclable thermosets using commodity polymers.
High‐Efficient Capacitive Deionization Using Amine‐Functionalized ZIF‐67@ 2D MXene: Toward Ultrahigh Desalination Performance
Authors: Molaei Aghdam Ali , Mikaeili Chahartagh Nima , Delfani Ehsan 
Published: July 2023

AbstractCapacitive deionization (CDI) is proposed as a thermodynamically effective desalination method for treating non‐potable water with a low‐salt concentrator to address the growing need for clean drinking water. MXenes, 2D transition metal carbides derived from Mn+1AXn (n = 1, 2, 3, or 4) bulk phases, are an intriguing class of crystalline materials with unique physicochemical properties. However, a significant challenge for their practical use is the degradation and phase transition experienced by MXene flakes when exposed to aqueous conditions. Several strategies for improving MXene stability are proposed, including combining it with porous materials such as carbon and metal–organic frameworks (MOFs). In addition to ZIFs, antioxidants with amine functional groups are used to stabilize MXene. Additionally, amine‐functionalized MXenes exhibit improved resistance to oxidation caused by water, enabling them to maintain their dispersity in aqueous solutions at room temperature. The produced A‐ZIF@MXene electrode represents high desalination performance with the highest salt adsorption capacity up to 80.3 mg g−1 in 1000 mg L−1 The NaCl solution reserve more than 99% of its initial capacity in 50 cycles to the synergism of its surface amine groups, high hydrophilicity, and distinctive hierarchical porous structure.
Autonomous Adaption of Intelligent Humidity‐Programmed Hydrogel Patches for Tunable Stiffness and Drug Release
Authors: Pflumm Stephan , Wiedemann Yvonne , Fauser Dominik , Safaraliyev Javidan , Lunter Dominique , Steeb Holger , Ludwigs Sabine 
Published: July 2023

AbstractIntelligent humidity‐programmed hydrogel patches with high stretchability and tunable water‐uptake and ‐release are prepared by copolymerization and crosslinking ofN‐isopropylacrylamide and oligo(ethylene glycol) comonomers. These intelligent elastomeric patches strongly respond to different humidities and temperatures in terms of mechanical properties which makes them applicable for soft robotics and smart skin applications where autonomous adaption to environmental conditions is a key requirement. It is shown that beyond using the hydrogel in the conventional state in aqueous media, new patches can be controlled by relative humidity. This humidity programming of the patches allows to tune drug release kinetics, opening potential application fields such as skin wound therapy and personalized medication. In situ dynamic‐mechanical measurements show a huge dependence on temperature and humidity. The glass transition temperatureTgshifts from around 60 °C at dry conditions to below 0 °C for 75% r.h. and higher. The storage modulus is tunable over more than four orders of magnitude from 0.6 up to 400 MPa. Time‐temperature superposition in master curves allows to extract relaxation times over 14 orders of magnitude. With strains at break of over 200% the patches are compliant with human skin and therefore patient‐friendly in terms of adapting to movements.
Quantum Efficiency Gain in 2D Perovskite Photo and X‐Ray Detectors
Authors: Tsai Hsinhan , Pan Lei , Li Xinxin , Yoo Jinkyoung , Tretiak Sergei , Ma Xuedan , Cao Lei R. , Nie Wanyi 
Published: July 2023

AbstractThe perovskite polycrystalline thin film detector fabricated by solution method is a promising low‐cost, scalable technology for radiation imaging, but its thin volume limits the sensing efficiency for high‐energy X‐ray photons. This work reports 2D perovskite thin film photo‐diodes with a detection gain when sensing visible and X‐ray photons. Detailed power and temperature‐dependent device characterizations reveal a charge multiplication effect to be responsible for the observed high gain. This is caused by a disparity in electron and hole transport, where electron transport is retarded by a trap/de‐trap process via shallow trap states, whereas the hole transport is fast enough to produce a photoconductive gain in satisfying the charge neutrality. The 2D perovskite made with butylamine spacers is also found to exhibit a larger efficiency gain than those made with phenylethylamines because of the higher likelihood of forming shallow traps in the former. The thin film diodes feature a high temporal response over 1 MHz due to the fast charge collection across a thin volume, and the discovery provides device physics mechanisms in connection to material structure‐function relationship for future optoelectronics design that can boost the efficiency of X‐ray sensing and dim light detection.
Nickel‐Catalyzed Cross‐Electrophile Coupling of Aryl Phosphates with Aryl Bromides
Authors: Ren Jing‐Ao , Chen Xue , Gui Chao , Miao Chengping , Chu Xue‐Qiang , Xu Hao , Zhou Xiaocong , Ma Mengtao , Shen Zhi‐Liang 
Published: July 2023

AbstractA step‐economical and operationally simple nickel‐catalyzed cross‐electrophile coupling of aryl phosphates with aryl bromides through C−O bond cleavage, which precluded the employment of relatively moisture‐labile and unreadily available organometallics, was developed. The reaction proceeded smoothly in the presence of magnesium turnings and lithium chloride in THF to afford the corresponding biaryls in moderate to good yields with reasonable functionality tolerance.
Dynamic Zn/Electrolyte Interphase and Enhanced Cation Transfer of Sol Electrolyte for All‐Climate Aqueous Zinc Metal Batteries
Authors: Peng Huili , Wang Chunting , Wang Dongdong , Song Xinxin , Zhang Chenghui , Yang Jian 
Published: July 2023

AbstractZn metal as one of the promising anodes of aqueous batteries possesses notable advantages, but it faces severe challenges from severe side reactions and notorious dendrite growth. Here, ultrathin nanosheets of α‐zirconium phosphate (ZrP) are explored as an electrolyte additive. The nanosheets not only create a dynamic and reversible interphase on Zn but also promote the Zn2+ transportation in the electrolyte, especially in the outer Helmholtz plane near ZrP. Benefited from the enhanced kinetics and dynamic interphase, the pouch cells of Zn||LiMn2O4 using this electrolyte remarkably improve electrochemical performance under harsh conditions, i.e. Zn powders as the Zn anode, high mass loading, and wide temperatures. The results expand the materials available for this dynamic interphase, provide an insightful understanding of the enhanced charge transfer in the electrolyte, and realize the combination of dynamic interphase and enhanced kinetics for all‐climate performance.
Polyolefin‐Based Separator with Interfacial Chemistry Regulation for Robust Potassium Metal Batteries
Authors: Tu Long , Zhang Zhijia , Zhao Zelin , Xiang Xinyuan , Deng Bohua , Liu Dan , Qu Deyu , Tang Haolin , Li Junsheng , Liu Jinping 
Published: July 2023

AbstractPotassium metal batteries (KMBs) are ideal choices for high energy density storage system owing to the low electrochemical potential and low cost of K. However, the practical KMB applications suffer from intrinsically active K anode, which would bring serious safety concerns due to easier generation of dendrites. Herein, to explore a facile approach to tackle this issue, we propose to regulate K plating/stripping via interfacial chemistry engineering of commercial polyolefin‐based separator using multiple functional units integrated in tailored metal organic framework. As a case study, the functional units of MIL‐101(Cr) offer high elastic modulus, facilitate the dissociation of potassium salt, improve the K+ transfer number and homogenize the K+ flux at the electrode/electrolyte interface. Benefiting from these favorable features, uniform and stable K plating/stripping is realized with the regulated separator. Full battery assembled with the regulated separator showed ∼19.9 % higher discharge capacity than that with glass fiber separator at 20 mA g−1 and much better cycling stability at high rates. The generality of our approach is validated with KMBs using different cathodes and electrolytes. We envision that the strategy to suppress dendrite formation by commercial separator surface engineering using tailor‐designed functional units can be extended to other metal/metal ion batteries.
The effect of reinforcement aspect ratio on the performance of PA66 composites with recycled carbon fiber and upcycled graphene nanoplatelets: An interface characterization from process to modeling
Authors: Dericiler Kuray , Zafar Salman , Sas Hatice S. , Saner Okan Burcu 
Published: July 2023

AbstractThe use of recycled reinforcements in structural applications is growing due to concerns about the environmental impact and economic costs associated with energy‐intensive production techniques of virgin fibers. However, limited research has explored the integration of multiscale reinforcements with different aspect ratios into PA66 composites to enhance their performance. In this study, the effect of reinforcement aspect ratio on PA66 composites by incorporating recycled carbon fibers and waste tire‐derived graphene nanoplatelets (GNP) with oxygen surface functional groups is investigated. The objective of this work is to improve mechanical properties of the composites by promoting nucleation and enhancing the fiber/matrix interface. Through high shear mixing, recycled carbon fibers and GNP are effectively dispersed within the PA66 matrix. The alignment of these reinforcements during the injection molding process is monitored using the developed flow model, coupled with experimental rheological data. The resulting composites demonstrate significant improvements in mechanical properties due to enhanced interfacial interactions, including improved tensile properties up to 94%, flexural properties up to 86% compared to the neat PA66 by successfully integrating waste tire‐driven GNP and recycled carbon fibers. This study contributes to the development of sustainable materials for load‐bearing applications, utilizing recycled reinforcements with different aspect ratios.
Epoxy soybean oil plasticized vinyl chloride acrylate waterborne emulsion: Physically mixed versus chemically grafted
Authors: Wei Jiajun , Ouyang Chunfa , Shan Xiaoqian , Gao Qun , Zheng Kangsheng , Luo Wei 
Published: July 2023

AbstractIn this study, two types of epoxy soybean oil (ESO) modified vinyl chloride acrylate copolymer emulsion (vc‐m), that is, physically modified vc‐m‐1 and chemically grafted vc‐m‐2, were well prepared initially. The chemical structure, particle size distribution, surface morphology, flexibility, and mechanical properties of the three emulsions were studied through Fourier transform infrared analysis, proton nuclear magnetic resonance analysis, nano‐size analysis, atomic force microscopy, dynamic mechanical analysis, as well as tensile test. Compared with vc‐m, the glass transition temperature (Tg) of vc‐m‐1 and vc‐m‐2 was reduced by nearly 28%, the tensile strength was increased by 50%, and the elongation at break was improved by 70.5% and 70.7%, respectively. No significant difference was identified between vc‐m‐1 and vc‐m‐2. Furthermore, the chemical reaction mechanism and internal plasticizing mechanism of vc‐m‐2 synthesis were discussed. ESO enhanced the low‐temperature brittleness and mechanical strength of the emulsion, and vc‐m‐2 exhibited better migration stability while maintaining the identical flexibility and mechanical properties as vc‐m‐1. The modified emulsion is capable of adapting to low ambient temperatures when applied to coatings and road adhesives while showing promising applications.
Screening of yeast co‐culture using crude hydrolysate for co‐fermentation of pentose and hexose
Authors: Sandri Juliana P. , Milessi Thais S. , Zangirolami Teresa C. , Mussatto Solange I. 
Published: July 2023

AbstractThe use of all sugars from biomass fractionation – that is, hexoses and pentoses – is essential to develop feasible processes in a biorefinery context. Hexoses are converted into different products by most microorganisms. The main issue is the conversion of pentoses, especially when mixed with hexoses. Improving sugar conversion in co‐fermentation is a major challenge, which was explored in this work. Co‐culture using Saccharomyces cerevisiae and evolved Kluyveromyces marxianus strains was evaluated by screening using 24 deep‐well plates. Glucose depletion and 83% of xylose conversion were achieved with supplemented hemicellulosic hydrolysate medium (medium volume corresponding to 2/5 of deep‐well volume), and initial cell concentrations of 2.5 g L‐1 for each yeast, incubated at 150 rpm. The screening strategy provided reliable data that confirmed the co‐culture as a promising approach for the co‐assimilation of biomass‐derived sugars. The importance of aeration control for effective xylose assimilation was also pointed out.
The role of a discussion forum within a web‐based psychoeducational intervention focusing on sex and fertility—What do young adults communicate?
Authors: Skog Rebecca , Lampic Claudia , Olsson Erik , Wettergren Lena 
Published: July 2023

AbstractObjectiveThis study sought to investigate interactive participation and content of a moderated discussion forum within a web‐based psychoeducational intervention aimed at alleviating sexual dysfunction and fertility distress in young adults diagnosed with cancer.MethodsThe study is part of the Fex‐Can Young Adult randomized controlled trial (RCT), in which young adults with self‐reported sexual dysfunction or fertility distress were invited to participate. This study focuses on RCT participants that were randomized into the intervention condition. Sociodemographics and clinical characteristics of intervention participants and level of activity in the intervention were analyzed with descriptive statistics and compared between subgroups (“high” and “low” activity participants). Inductive qualitative thematic analysis was used to analyze the posts in the discussion forum.ResultsOf 135 intervention participants, 24% met the criteria for high activity participation. There were no statistically significant differences found in terms of clinical and sociodemographic characteristics between high and low activity participants. Ninety‐one participants (67%) accessed the discussion forum, and 19 (14%) posted at least once. Posters shared intimate details of their experiences of sexuality and fertility following cancer. The thematic analysis of posts resulted in four themes: fertility fears, perceptions of the changed body, missing out on life, and importance of support and information.ConclusionsWhile a smaller proportion of participants posted in the discussion forum, a majority spent time reading posts (lurkers). Participants posting in the forum shared experiences of intimate relationships, body image, parenthood concerns, and support needs. The discussion forum was used by a majority of intervention participants, and provided appreciated support for those who posted in the forum. We therefore recommend similar interventions to include this opportunity for interaction and communication.
Green Chromatographic Methods and in Vitro Pharmacological Analysis of Varronia curassavica Leaf Derivatives
Authors: Moro Isabela Jacob , Carvalho Flávio Alexandre , Scardelato Pereira Juhan Augusto , Brasil Romão Gabriela , Faibicher André , Rodrigues Winner Duque , Pires Assis Renata , Lourenço Brunetti Iguatemy , de Lacorte Singulani Junya , Fusco‐Almeida Ana Marisa , Gonzaga dos Santos André 
Published: July 2023

AbstractVarronia curassavica displays anti‐inflammatory, antiulcerogenic, and antioxidant activities. Herein, we employed new UHPLC –UV green chromatographic methods for the analysis of in vitro antioxidant and anti‐inflammatory activities of V. curassavica and its embryotoxicity in Zebrafish. Cordialin A, brickellin, and artemetin were purified from the ethanol (EtOH) extract of V. Curassavica leaves and identified using spectrometric techniques. In line with Green Analytical Chemistry principles, the proposed UHPLC methods involve the use of ethanol as organic modifier with low mobile phase consumption, and without sample pretreatment (OLE‐UHPLC‐UV). The application of the Agree and HPLC‐EAT tools for greenness assessment yielded this pattern: HPLC‐UV (reference)<UHPLC‐UV<OLE‐UHPLC‐UV. Zebrafish assay results showed that 70 % EtOH extract of V. Curassavica leaves exhibited lower toxicity compared to 100 % EtOH extract, with LC50 of 164.3 and 122.9 μg/mL, respectively, in 24 h post fertilization. Some embryos exhibited malformation phenotypes in the heart, somites, and eyes, mainly in higher extract concentrations. Extracts and brickellin exhibited higher antioxidant activity in the DPPH⋅ assay, while brickellin+artemetin displayed higher antioxidant activity compared to the extracts and isolated flavones in the O2⋅− and HOCl/OCl− scavenging assays. Cordialin A and brickellin exhibited low COX‐1, COX‐2, and phospholipase A2 inhibition.
Synthetic Light‐Driven Consortia for Carbon‐Negative Biosynthesis
Authors: Li Chaofeng , Zheng Haotian , Li Hengrun , Liu Liangxu , Wang Jiawei , Ni Jun 
Published: July 2023

AbstractSynthetic light‐driven consortia composed of phototrophs and heterotrophs have attracted increasing attention owing to their potential to be used in sustainable biotechnology. In recent years, synthetic phototrophic consortia have been used to produce bulk chemicals, biofuels, and other valuable bioproducts. In addition, autotrophic‐heterotrophic symbiosis systems have potential applications in wastewater treatment, bioremediation, and as a method for phytoplankton bloom control. Here, we discuss progress made on the biosynthesis of phototrophic microbial consortia. In addition, strategies for optimizing the synthetic light‐driven consortia are summarized. Moreover, we highlight current challenges and future research directions for the development of robust and controllable synthetic light‐driven consortia.
N‐Oxides as Control Element for the Direction of a Sigmatropic Rearrangement: Application as a Switch for Fluorescence
Authors: Spino Claude , Latil Marine , Lessard Roxanne , Fevre‐Renault Quentin , Legault Claude Y. 
Published: July 2023

AbstractAn exceptional level of control over the direction of the (2,3)‐sigmatropic rearrangement between N‐oxides and alkoxylamine is achieved by simply changing the solvent in which they are dissolved. Protic solvents like water, methanol and hexafluoroisopropanol favour the N‐oxide form, while other solvents like acetone, acetonitrile and benzene favour the alkoxylamine. The reaction temperature and nature of the substituents on the alkene affect the rate of rearrangement. A N‐oxide fragment was attached to two fluorescent molecules and acted as an on/off switch for their fluorescence. The conversion of alkoxylamines into the corresponding N‐oxides has not previously been described and is here termed the ‘Reverse Meisenheimer Rearrangement’.
Direct Synthesis of ABCD‐Porphyrin Platinum(II) Complexes via Dehydrative Aromatization
Authors: Inoue Ryo , Yokoyama Momoka , Maruyama Itsuki , Morisaki Yasuhiro 
Published: July 2023

AbstractSince the development of the first method for porphyrin synthesis by Rothemund in 1935, porphyrin derivatives have been widely investigated and have played an essential role in chemical sciences. Most synthetic routes of porphyrins involve oxidative aromatization. Herein, we present a synthetic method to produce ABCD‐porphyrins, including chiral ones, through a one‐pot reaction involving “coordination, cyclization, and dehydrative aromatization” using a mono‐dipyrrinatoPt(II)Cl(COE) (COE=cyclooctene) complex as a platinum template.
A General Pathway towards NHC ⋅ GaH2(OTf) Adducts – The Key for the Synthesis of NHC‐Stabilized Cationic 13/15 Chain Compounds of Gallium
Authors: Szlosek Robert , Seidl Michael , Balázs Gábor , Scheer Manfred 
Published: July 2023

AbstractA general pathway towards NHC (NHC=N‐heterocyclic carbene)‐stabilized galliummonotriflates NHC ⋅ GaH2(OTf) (NHC=IDipp, 1 a; IPr2Me2, 1 b; IMes, 1 c; IDipp=1,3‐bis(2,6‐diisopropylphenyl)‐imidazolin‐2‐ylidene, IPr2Me2=1,3‐bis‐(diisopropyl)‐4,5‐dimethyl‐imidazolin‐2‐ylidene, IMes=1,3‐bis(2,4,6‐trimethylphenyl)‐imidazolin‐2‐ylidene) is reported. Quantum chemical calculations give detailed insight into the underlying reaction pathway. The obtained NHC ⋅ GaH2(OTf) compounds were employed in reactions with donor‐stabilized pnictogenylboranes to synthesize the elusive cationic parent 13/15/13 chain compounds [IDipp ⋅ GaH2ER2E'H2 ⋅ D][OTf] (3 a: D=IDipp, E=P, E’=B, R=H; 3 b: D=NMe3, E=P, E’=B, R=H, 3 c: D=NMe3, E=P, E’=B, R=Ph, 3 d: D=IDipp, E=P, E’=Ga, R=H). Supporting computational studies highlight the electronic features of the products.