bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Sequential Dual Functional Supramolecular Hydrogel with Promoted Drug Release to Scavenge ROS and Stabilize HIF‐1α for Myocardial Infarction Treatment
Authors: Wang Kai , Yao Shun‐Yu , Wang Zhaoyi , Shen Liyin , Guo Dong‐Sheng , Zhu Yang , Yang Xiayan , Yu Qifeng , Gao Changyou 
Published: October 2023

AbstractMyocardial infarction (MI) has a characteristic inflammatory microenvironment due to the overproduction of reactive oxygen species (ROS) and causes the extraordinary deposition of collagen and thereby fibrosis. An on‐demand adaptive drug releasing hydrogel is designed to modulate the inflammatory microenvironment and inhibit cardiac fibroblasts (CFs) proliferation post MI by scavenging the overproduced ROS and releasing 1,4‐dihydrophenonthrolin‐4‐one‐3‐carboxylic acid (DPCA) to maintain the expression of hypoxia‐inducible factor 1α (HIF‐1α). DPCA is prefabricated to a prodrug linked with disulfide bond (DPCA‐S‐S‐OH). The DPCA‐S‐S‐OH and carboxylated calixarene (CSAC4A) are grafted onto the backbone of methacrylated hyaluronic acid (HAMA) to obtain HAMA‐S‐S‐DPCA and HAMA‐CA, respectively, which are further reacted to form a dual network hydrogel (R+/DPCA(CA)) with covalent linking and host–guest interaction between DPCA and CSAC4A. The ROS‐triggered hydrolysis of ester bond and subsequently sustaining release of DPCA from the cavity of CSAC4A jointly cause the constant expression of HIF‐1α, which significantly restricts the CFs proliferation, leading to suppressed fibrosis and promoted heart repair.
Dual‐Effect Coupling for Superior Dielectric and Thermal Conductivity of Polyimide Composite Films Featuring “Crystal‐Like Phase” Structure
Authors: Dong Xiaodi , Wan Baoquan , Zheng Ming‐Sheng , Huang Langbiao , Feng Yang , Yao Ruifeng , Gao Jinghui , Zhao Quan‐Liang , Zha Jun‐Wei 
Published: October 2023

AbstractTo match the increasing miniaturization and integration of electronic devices, higher requirements are put on the dielectric and thermal properties of the dielectrics to overcome the problems of delayed signal transmission and heat accumulation. Here, a 3D porous thermal conductivity network is successfully constructed inside the polyimide (PI) matrix by the combination of ionic liquids (IL) and calcium fluoride (CaF2) nanofillers, motivated by the bubble‐hole forming orientation force. Benefiting from the 3D thermal network formed by IL as a porogenic template and “crystal‐like phase” structures induced by CaF2‐ polyamide acid charge transfer, IL‐10 vol% CaF2/PI porous film exhibits a low permittivity of 2.14 and a thermal conductivity of 7.22 W m−1 K−1. This design strategy breaks the bottleneck that low permittivity and high thermal conductivity in microelectronic systems are difficult to be jointly controlled, and provides a feasible solution for the development of intelligent microelectronics.
Triboelectric Nanogenerators Based on Fluid Medium: From Fundamental Mechanisms toward Multifunctional Applications
Authors: Jiang Feng , Zhan Liuxiang , Lee Jin Pyo , Lee Pooi See 
Published: October 2023

AbstractFluid‐based triboelectric nanogenerators (FB‐TENGs) are at the forefront of promising energy technologies, demonstrating the ability to generate electricity through the dynamic interaction between two dissimilar materials, wherein at least one is a fluidic medium (such as gas or liquid). By capitalizing on the dynamic and continuous properties of fluids and their interface interactions, FB‐TENGs exhibit a larger effective contact area and a longer‐lasting triboelectric effect in comparison to their solid‐based counterparts, thereby affording longer‐term energy harvesting and higher‐precision self‐powered sensors in harsh conditions. In this review, various fluid‐based mechanical energy harvesters, including liquid‐solid, gas‐solid, liquid‐liquid, and gas‐liquid TENGs, have been systematically summarized. Their working mechanism, optimization strategies, respective advantages and applications, theoretical and simulation analysis, as well as the existing challenges, have also been comprehensively discussed, which provide prospective directions for device design and mechanism understanding of FB‐TENGs.
The Role of the Bottom Oxide Layer in Oxide‐Metal‐Oxide (OMO) Electrode for Stretchable Organic Light‐Emitting Diodes
Authors: Lee Chang Min , Kim Yeong Beom , Sarker Subrata , Kim Dong Hyun , Kim Tae Wook , Shah Syed Hamad Ullah , Cho Hyun Woo , Bae Tae‐Sung , Yu Seung Min , Kang Yong‐Cheol , Han Sangmin , Jesuraj P. Justin , Ko Keum‐Jin , Song Myungkwan , Kim Chang‐Su , Ryu Seung Yoon 
Published: October 2023

AbstractThe challenges for stretchable organic light‐emitting diodes (SOLEDs) have led research into advanced manufacturing processes. Several electrodes have been researched to replace conventional indium tin oxide in SOLEDs due to its brittleness, indium scarcity in earth, and poor deformation capabilities. Oxide–metal–oxide (OMO) electrodes are promising alternatives for flexible/stretchable electronics owing their excellent charge injection and optical transparencies, including mechanical compliance. In this study, two oxides (i.e., MoO3 and V2O5) with different surface energies in an OMO structure to effectively inhibit the island growth of the ultra‐thin Au (5 nm) metal is incorporated. The morphology and interfacial coordinate covalent bonds between the seed layer and ultra‐thin Au film are extensively studied. The improved ultra‐thin Au growth in OMO structure together with figure‐of‐merit have been employed as the anode for a phosphorescent SOLED structure. The SOLEDs with OMO electrode under V2O5 as bottom oxide remain stable after peeling‐off and sustain a >50% uniaxial strain with a negligible reduction in luminance and current efficiencies. The surface energy and interface of the bottom oxide in the OMO structure are crucial for thin metals to attain superior optical, structural, electronic, and mechanical stability in SOLEDs.
Thermochromism in Bismuth Halide Perovskites with Cation and Anion Transmutation
Authors: Tailor Naveen Kumar , Kruszyńska Joanna , Prochowicz Daniel , Yadav Pankaj , Satapathi Soumitra 
Published: October 2023

AbstractBismuth halide perovskites are highly promising for various applications owing to their lower toxicity and greater environmental stability. The temperature‐dependent color tunability of these materials renders them a strong contender for use in smart window applications and temperature sensors. To delve deeper into their properties, the thermochromism and fundamental lattice dynamics are investigated in bismuth halide perovskites through the transmutation of cation and anions, specifically focusing on Cs3Bi2Br9, MA3Bi2Br9, Cs2AgBiBr6, and Cs2AgBiCl6 perovskites. Absorption spectroscopy and powder‐XRD patterns as a function of temperature reveal that 2D‐layered Cs3Bi2Br9 and MA3Bi2Br9 perovskites exhibit significantly greater bandgap changes and thermal expansion compared to 3D connected Cs2AgBiCl6 and Cs2AgBiBr6 perovskites attributed to more space in the 2D connected lattice. The reduction in bandgap and color variation in these perovskites stems from the intricate interplay between electron‐phonon interactions and thermal expansion. Notably, it is found that the type of cation and anion play a crucial role in influencing the degree of thermochromism, as the electron‐phonon coupling depends on this transformation. This study sheds new light on the fundamental mechanisms underlying the thermochromic behavior of bismuth halide perovskites and paves the way for the rational design and engineering of novel thermochromic materials with tailored properties.
Meta‐Magnetic All‐Optical Helicity Dependent Switching of Ferromagnetic Thin Films
Authors: Khalid Muhammad Waleed , Ha Jeongho , Hadri Mohammed Salah El , Hsu Liyi , Hemayat Saeed , Xiao Yuxuan , Sergienko Alexander , Fullerton Eric E. , Ndao Abdoulaye 
Published: October 2023

AbstractTo address the ever‐increasing need for higher speed and density of information storage, recent developments in ultrafast optical switching have focused on deterministic control of magnetic properties of materials using femtosecond circularly polarized optical pulses. However, a monolithic high‐speed optical helicity‐dependent switching at room temperature has remained elusive. In recent years, ultra‐thin flat optical structures, known as metasurfaces, have been developed that offer a versatile way to manipulate electromagnetic fields using subwavelength spatial resolution. Here, a monolithic multilayer nanostructure capable of achieving optical helicity‐dependent switching in arbitrary geometries using femtosecond meta‐circularly polarized optical pulses is theoretically described and experimentally demonstrated at room temperature. The proposed monolithic meta‐magnetic platform provides a practical route to reform the current data memory, storage, and information processing technologies in integrated opto‐magnetic systems, holding great promise for cutting‐edge applications in information, spintronics, sensing, and memory storage devices.
Thulium‐Doped Sodium‐Ytterbium Double Perovskite Single Crystals: A Novel and Efficient Upconverter for Achieving Highly Sensitive Narrowband Near‐Infrared Perovskite Photodetectors
Authors: Xue Wenfeng , Pan Gencai , Li Chao , Zhu Yaxian , Wang Yaqiong , Kong Bingyin , Gao Huiping , Zhang Huafang , You Wenwu , Mao Yanli 
Published: October 2023

AbstractDeveloping fluorescent materials that can achieve efficient upconversion (UC) emission under low power density excitation has always been a great challenge, especially for Tm3+ ions. Here, Tm3+‐doped Cs2NaYbCl6 double perovskite single‐crystals (DPSCs) are prepared successfully. The DPSCs exhibit efficient UC emission under 980‐nm laser excitation, and the optimum UC efficiency reaches 9.48%. It is a recorded value. More importantly, its efficient UC emission can be achieved under low‐power density of 0.117 W cm−2 excitation. Moreover, the luminescence color of the DPSCs can be regulated from blue to red by increasing the doping concentration of Tm3+ ions. This is because the severe cross‐relaxation occurs between Tm3+ ions at high doping concentrations. The Cs2NaYb0.98Tm0.02Cl6 DPSCs with efficient UC emission are coupled to the CsPbI3 perovskite photodetector, achieving good visible and near‐infrared (NIR) detection without an external bias. It is worth emphasizing that the detectivity for 980 nm light can reach 1.26 × 1011 Jones, which is the highest value for self‐powered NIR photodetectors. Finally, given the dual functional characteristics of the device's response to broadband visible and narrowband NIR light, the dual encryption function is implemented during information transmission. This work will open new chances for applications in advanced integrated photonics devices.
Improving Photocurrent in Sb2Se3 Thin‐Film Solar Cells Through Sb2S3 Electron Reflector Layer: A Simulation Study
Authors: Jalali Hadi , Orouji Ali A. , Gharibshahian Iman 
Published: October 2023

AbstractIn this paper, antimony sulfide (Sb2S3) material is utilized as an electron reflector layer (ERL) in antimony selenide (Sb2Se3) solar cells. The primary objective of this simulation study is to mitigate recombination at the back contact and improve cell performance. It is demonstrated that incorporating Sb2S3 ERL into a traditional Sb2Se3 cell yields enhancements in both the short‐circuit current density (Jsc) and carrier collection rate. This enhancement is assigned to the reduced interface recombination rate at the back electrical contact. The strong electric field at the p+‐Sb2S3/p‐Sb2Se3 electrical contact creates a barrier with a height of 0.34 eV in the conduction band that hinders the electron carriers' access to the back contact. This barrier effectively improves cell efficiency. The use of this method has demonstrated a significant improvement in the external quantum efficiency (EQE) at longer wavelengths, specifically ranging from ≈800 to 1100 nm. Using this method, the Sb2Se3 active layer thickness is reduced to 1 µm, which reduces the fabrication cost. After optimizing the device, the cell efficiency enhances from 9.2% to 13.1%, resulting in a significant improvement compared to traditional Sb2Se3 solar cells without an ERL, thanks to the incorporation of a suitable Sb2S3 ERL.
Bilayer Kagome Borophene with Multiple van Hove Singularities
Authors: Gao Qian , Yan Qimin , Hu Zhenpeng , Chen Lan 
Published: October 2023

AbstractThe appearance of van Hove singularities near the Fermi level leads to prominent phenomena, including superconductivity, charge density wave, and ferromagnetism. Here a bilayer Kagome lattice with multiple van Hove singularities is designed and a novel borophene with such lattice (BK‐borophene) is proposed by the first‐principles calculations. BK‐borophene, which is formed via three‐center two‐electron (3c–2e) σ‐type bonds, is predicted to be energetically, dynamically, thermodynamically, and mechanically stable. The electronic structure hosts both conventional and high‐order van Hove singularities in one band. The conventional van Hove singularity resulting from the horse saddle is 0.065 eV lower than the Fermi level, while the high‐order one resulting from the monkey saddle is 0.385 eV below the Fermi level. Both the singularities lead to the divergence of electronic density of states. Besides, the high‐order singularity is just intersected to a Dirac‐like cone, where the Fermi velocity can reach 1.34 × 106 m s−1. The interaction between the two Kagome lattices is critical for the appearance of high‐order van Hove singularities. The novel bilayer Kagome borophene with rich and intriguing electronic structure offers an unprecedented platform for studying correlation phenomena in quantum material systems and beyond.
A novel de novo intragenic duplication in FBN1 associated with early‐onset Marfan syndrome in a 16‐month‐old: A case report and review of the literature
Authors: Piscopo Anthony , Warner Taylor , Nagy Jaime , Nagrale Vidya , Stence Aaron , Guseva Natalya , Bernat John A. , Calhoun Amy 
Published: October 2023

AbstractMarfan syndrome (MFS) is an autosomal dominant connective tissue disorder due to pathogenic variants in Fibrillin‐1 (FBN1) affecting nearly one in every 10,000 individuals. We report a 16‐month‐old female with early‐onset MFS heterozygous for an 11.2 kb de novo duplication within the FBN1 gene. Tandem location of the duplication was further confirmed by optical genome mapping in addition to genetic sequencing and chromosomal microarray. This is the third reported case of a large multi‐exon duplication in FBN1, and the only one confirmed to be in tandem. As the vast majority of pathogenic variants associated with MFS are point mutations, this expands the landscape of known FBN1 pathogenic variants and supports consistent use of genetic testing strategies that can detect large, indel‐type variants.
Near Infrared Light‐Triggered Photocatalytic Decaging for Remote‐Controlled Spatiotemporal Activation in Living Mice**
Authors: Liang Xuan , Qian Shan , Lou Zhizheng , Hu Renming , Hou Yuchen , Chen Peng R. , Fan Xinyuan 
Published: October 2023

AbstractSpatiotemporal manipulation of biological processes in living animals using noninvasive, remote‐controlled stimuli is a captivating but challenging endeavor. Herein, we present the development of a biocompatible photocatalytic technology termed CAT‐NIR, which uses external near infrared light (NIR, 740 nm) to trigger decaging reactions in living mice. The Os(II) terpyridine complex was identified as an efficient NIR photocatalyst for promoting deboronative hydroxylation reactions via superoxide generation in the presence of NIR light, resulting in the deprotection of phenol groups and the release of bioactive molecules under living conditions. The validation of the CAT‐NIR system was demonstrated through the NIR‐triggered rescue of fluorophores, prodrugs as well as biomolecules ranging from amino acids, peptides to proteins. Furthermore, by combining genetic code expansion and computer‐aided screening, CAT‐NIR could regulate affibody binding to the cell surface receptor HER2, providing a selective cell tagging technology through external NIR light. In particular, the tissue‐penetrating ability of NIR light allowed for facile prodrug activation in living mice, enabling noninvasive, remote‐controlled rescue of drug molecules. Given its broad adaptability, this CAT‐NIR system may open new opportunities for manipulating the functions of bioactive molecules in living animals using external NIR light with spatiotemporal resolution.
Palladium‐Catalyzed Atroposelective Kinetic C−H Olefination and Allylation for the Synthesis of C−B Axial Chirality
Authors: Xu Jie , Qiu Weihua , Zhang Xu , Wu Zhihan , Zhang Zhen , Yang Kai , Song Qiuling 
Published: October 2023

AbstractThe direct C−H functionalization of 1,2‐benzazaborines, especially asymmetric version, remains a great challenge. Here we report a palladium‐catalyzed enantioselective C−H olefination and allylation reactions of 1,2‐benzazaborines. This asymmetric approach is a kinetic resolution (KR), providing various C−B axially chiral 2‐aryl‐1,2‐benzazaborines and 3‐substituted 2‐aryl‐1,2‐benzazaborines in generally high yields with excellent enantioselectivities (selectivity (S) factor up to 354). The synthetic potential of this reaction is showcased by late‐stage modification of complex molecules, scale‐up reaction, and applications.
Polymer Photocatalysts Containing Segregated π‐Conjugation Units with Electron‐Trap Activity for Efficient Natural‐light‐driven Bacterial Inactivation
Authors: Wu Xiaojie , Hu Bochen , Li Di , Chen Biyi , Huang Yuanyong , Xie Zhongkai , Li Longhua , Shen Nanjun , Yang Fuchen , Shi Weidong , Chen Ming , Zhu Yongfa 
Published: October 2023

AbstractDevelopment of highly efficient and metal‐free photocatalysts for bacterial inactivation under natural light is a major challenge in photocatalytic antibiosis. Herein, we developed an acidizing solvent‐thermal approach for inserting a non‐conjugated ethylenediamine segment into the conjugated planes of 3,4,9,10‐perylene tetracarboxylic anhydride to generate a photocatalyst containing segregated π‐conjugation units (EDA‐PTCDA). Under natural light, EDA‐PTCDA achieved 99.9 % inactivation of Escherichia coli and Staphylococcus aureus (60 and 45 min), which is the highest efficiency among all the natural light antibacterial reports. The difference in the surface potential and excited charge density corroborated the possibility of a built‐in electron‐trap effect of the non‐conjugated segments of EDA‐PTCDA, thus forming a highly active EDA‐PTDA/bacteria interface. In addition, EDA‐PTCDA exhibited negligible toxicity and damage to normal tissue cells. This catalyst provides a new opportunity for photocatalytic antibiosis under natural light conditions.
Asymmetric Substitution by Alkynyl Copper Driven Dearomatization and Rearomatization
Authors: Sun Yu‐Ze , Ren Zi‐Yang , Yang Yuan‐Xiang , Liu Yang , Lin Guo‐Qiang , He Zhi‐Tao 
Published: October 2023

AbstractCatalytic asymmetric transformations by dearomatization have developed into a widely applicable synthetic strategy, but heavily relied on the use of arenes bearing a heteroatom. In this case, the dearomatization is facilitated by the involvement of a p‐orbital electron of the heteroatom. Different from the conventional substrate‐dependent model, here we demonstrate that the activation by a d‐orbital electron of the transition‐metal center can serve as a driving force for dearomatization, and is applied to the development of a novel asymmetric alkynyl copper facilitated remote substitution reaction. A newly modified PyBox chiral ligand enables the construction of valuable diarylmethyl and triarylmethyl skeletons in high enantioselectivities. An unexpected tandem process involving sequential remote substitution/cyclization/1,5‐H shift leads to the formation of the enantioenriched C−N axis. A gram‐scale reaction and various downstream transformations highlight the robustness of this method and the potential transformations of the products. Preliminary mechanistic studies reveal a mononuclear Cu‐catalyzed remote substitution process.
Reaction Chemistry at Discrete Organometallic Fragments on Black Phosphorus
Authors: Mitra Kendahl L. Walz , Riehs Michael , Draguicevic Andrei , Swann William A. , Li Christina W. , Velian Alexandra 
Published: October 2023

AbstractBlack phosphorus (bP) is a two‐dimensional van der Waals material unique in its potential to serve as a support for single‐site catalysts due to its similarity to molecular phosphines, ligands quintessential in homogeneous catalysis. However, there is a scarcity of synthetic methods to install single metal centers on the bP lattice. Here, we demonstrate the functionalization of bP nanosheets with molecular Re and Mo complexes. A suite of characterization techniques, including infrared, X‐ray photoelectron and X‐ray absorption spectroscopy as well as scanning transmission electron microscopy corroborate that the functionalized nanosheets contain a high density of discrete metal centers directly bound to the bP surface. Moreover, the supported metal centers are chemically accessible and can undergo ligand exchange transformations without detaching from the surface. The steric and electronic properties of bP as a ligand are estimated with respect to molecular phosphines. Sterically, bP resembles tri(tolyl)phosphine when monodentate to a metal center, and bis(diphenylphosphino)propane when bidentate, whereas electronically bP is a σ‐donor as strong as a trialkyl phosphine. This work is foundational in elucidating the nature of black phosphorus as a ligand and underscores the viability of using bP as a basis for single‐site catalysts.
Enhanced Gain in Organic Photodetectors Using the Polymer with Singlet Open‐Shell Ground State
Authors: Dang Qianxi , Hu Lanzhen , Yuan Likai , Miao Xincheng , Huang Arui , Su Junsheng , Wang Jiaqiang , Zhou Yongheng , Chen Xiaolong , Li Qianqian , Li Zhen , Deng Xianyu 
Published: October 2023

AbstractPhotodetectors are critical components in intelligent optoelectronic systems, and photomultiplication‐capable devices are essential for detecting weak optical signals. Despite significant advances, developing photomultiplication‐type organic photodetectors with high gain and low noise current simultaneously remains challenging. In this work, a new conjugated polymer PDN with singlet open‐shell ground state is introduced in active layers for electron capture, and the corresponding PDN‐based photodetectors exhibited an enhanced photoelectric gain and decreased dark current density at a low forward bias. At 1.5 V, the PDN‐based ternary photodetector has the external quantum efficiency (EQE) up to 2552.3 % and the specific detectivity of 1.4×1014 Jones at 710 nm calculated by the measured noise current, with the gain 22 times higher than that of the control group. This study provides an approach for exploiting polymers with singlet open‐shell ground state to enhance the gain of organic photodetectors.