bluuebunny/crossref_metadata_2025_split huggingface dataset:
Liquid Crystalline Polymer Coatings Fabricated by Initiated Chemical Vapor Deposition
Authors: Kim Myounguk , Park Jieun , Nonnenmann Stephen S. , Bradley Laura C. 
Published: August 2022

AbstractLiquid crystalline polymer (LCP) coatings offer avenues for the fabrication of devices with smart surfaces incorporating responsive topography, reflectivity, or polarization from their unique anisotropic optical and mechanical properties. LCPs have most commonly been made by photopolymerization of reactive mesogens within confined cells. Here, an alternative method of preparing LCP coatings using initiated chemical vapor deposition (iCVD) is described. LCP‐iCVD copolymer coatings comprised of an acrylic cyanobiphenyl mesogenic monomer copolymerized with vinyl ether crosslinkers are prepared. Systematic experiments examine the relationship between the monomer properties, reactor conditions, and polymer deposition rate. The alignment of the mesogenic phase in the as‐synthesized coatings is also demonstrated to be controlled by the surface energy of the underlying substrate. Interestingly, the surface properties of LCP coatings measured by atomic force microscopy are shown to depend on the director orientation. The data presented in this work introduce mesogenic monomers into the library of vapor‐deposited polymer coatings.
Large‐Scale Laser Nanopatterning of Multiband Tunable Mid‐Infrared Metasurface Absorber
Authors: Yuan Dandan , Li Jun , Huang Jiaxu , Wang Min , Xu Shaolin , Wang Xinwei 
Published: August 2022

AbstractLarge‐scale nanopatterning at low cost and high throughput is crucial to the practical applications of metasurfaces. Phase‐change materials equipped in these metasurfaces as modulation layers or resonators are generally applied to achieve a tunable function and have attracted significant attention. Here, an efficient method is developed by combining ultrafast laser localized modification/ablation and subsequent etching to fabricate nanostructures on a phase‐change material, Ge2Sb2Te5 (GST), over a wafer‐sized area. The localized laser treatments under gradually increased laser fluences contribute to the variety of achievable nanostructures including disk and ring structures, whose feature sizes and periods can be tuned by adjusting laser parameters and subsequent etching conditions. A mid‐infrared metasurface absorber is designed and fabricated by using the GST ring units as resonators. Notably, varying the geometrical features of rings allows generating dual‐band and tri‐band absorption peaks in the mid‐infrared spectral range, whose peak absorptivity can reach ≈92%. By converting GST from amorphous to crystalline state, a broad absorption spectral redshift of 700 nm is achieved. The large‐area high‐throughput fabrication together with high‐absorption design demonstrates their potential in mass production of phase‐change metasurface‐based absorbers.
Synthesis of 3‐Amino‐1‐(difluoromethylidene)tetralins via Relay Photocatalytic Cascade Reactions of Arylalanines and 2‐Bromo‐3,3,3‐trifluoropropene
Authors: Zeng Weidi , Li Linyong , Wang Chihao , Wang Duozhi , Zhou Lei 
Published: August 2022

AbstractA relay photocatalytic cascade reaction for the synthesis of 3‐amino‐1‐(difluoromethylidene)tetralins was described. The reaction used readily available N‐Boc protected arylalanines and bulk industrial chemical 2‐bromo‐3,3,3‐trifluoropropene (BTP) as the starting materials combining two photoredox catalytic cycles with a single photocatalyst. In the first catalytic cycle, the defluorinative coupling of N‐Boc arylalanines with BTP provided 2‐bromo‐1,1‐difluoroalkenes. In the second catalytic cycle, 2‐bromo‐1,1‐difluoroalkenes underwent intramolecular radical cyclization by photoredox activation of C(sp2)−Br bond, affording the desired 3‐amino‐tetralins bearing an exo‐difluoroethylene unit in good yields. Moreover, the reactions of 3‐aryl propanoic acids and BTP for the construction of 1‐(difluoromethylidene)tetralins were also demonstrated.magnified image
Protein Binding Nanoparticles as an Integrated Platform for Cancer Diagnosis and Treatment
Authors: Wang Xuemei , Li Shengbo , Wang Siqi , Zheng Shuo , Chen Zhenbing , Song Heng 
Published: August 2022

AbstractSmart nanomaterials constitute a new approach toward safer and more effective combined anti‐cancer immunotherapy. In this study, polydopamine‐multiprotein conjugates (DmPCs) that can be used for targeted delivery of multiple proteins to cells, realize imaging and combine the advantages of multiple treatment methods (photothermal therapy, chemodynamic therapy, and immunotherapy) can be synthesized and characterized. Proteins, as biological agents, are frequently used in this context, given their low toxicity in vivo. To overcome protein instability and short half‐life in vivo, the use of several proteins in combination with selected nanomaterials to treat patients with melanoma is proposed. In addition to the synthesis and characterization of protein‐bound nanoparticles, it is further demonstrated that several proteins can be efficiently delivered to tumor sites. DmPCs have a wide range of potential adaptability, which provides new opportunities for proteins in the field of treatment and imaging.
Influence of Elasticity of Hydrogel Nanoparticles on Their Tumor Delivery
Authors: Chen Xiangyu , Zhang Shuwei , Li Jinming , Huang Xiaobin , Ye Haochen , Qiao Xuezhi , Xue Zhenjie , Yang Wensheng , Wang Tie 
Published: August 2022

AbstractPolymeric nanocarriers have a broad range of clinical applications in recent years, but an inefficient delivery of polymeric nanocarriers to target tissues has always been a challenge. These results show that tuning the elasticity of hydrogel nanoparticles (HNPs) improves their delivery efficiency to tumors. Herein, a microfluidic system is constructed to evaluate cellular uptake of HNPs of different elasticity under flow conditions. It is found that soft HNPs are more efficiently taken up by cells than hard HNPs under flow conditions, owing to the greater adhesion between soft HNPs and cells. Furthermore, in vivo imaging reveals that soft HNPs have a more efficient tumor delivery than hard HNPs, and the greater targeting potential of soft HNPs is associated with both prolonged blood circulation and a high extent of cellular adhesion.
Designing Inorganic Semiconductors with Cold‐Rolling Processability
Authors: Wang Xu‐Dong , Tan Jieling , Ouyang Jian , Zhang Hang‐Ming , Wang Jiang‐Jing , Wang Yuecun , Deringer Volker L. , Zhou Jian , Zhang Wei , Ma En 
Published: August 2022

AbstractWhile metals can be readily processed and reshaped by cold rolling, most bulk inorganic semiconductors are brittle materials that tend to fracture when plastically deformed. Manufacturing thin sheets and foils of inorganic semiconductors is therefore a bottleneck problem, severely restricting their use in flexible electronic applications. It is recently reported that a few single‐crystalline 2D van der Waals (vdW) semiconductors, such as InSe, are deformable under compressive stress. Here it is demonstrated that intralayer fracture toughness can be tailored via compositional design to make inorganic semiconductors processable by cold rolling. Systematic ab initio calculations covering a range of van der Waals semiconductors homologous to InSe are reported, leading to material‐property maps that forecast trends in both the susceptibility to interlayer slip and the intralayer fracture toughness against cracking. GaSe is predicted, and experimentally confirmed, to be practically amenable to being rolled to large (three quarters) thickness reduction and length extension by a factor of three. The fracture toughness and cleavage energy are predicted to be 0.25 MPa m0.5 and 15 meV Å−2, respectively. The findings open a new realm of possibility for alloy selection and design toward processing‐friendly group‐III chalcogenides for practical applications.
Spatial Regulation of Acceptor Units in Olefin‐Linked COFs toward Highly Efficient Photocatalytic H2 Evolution
Authors: Zhao Zhengfeng , Chen Xuepeng , Li BaoYing , Zhao Shu , Niu Liwei , Zhang Zhenjie , Chen Yao 
Published: August 2022

AbstractCovalent organic frameworks (COFs)‐based photocatalysts have received growing attention for photocatalytic hydrogen (H2) production. One of the big challenges in the field is to find ways to promote energy/electron transfer and exciton dissociation. Addressing this challenge, herein, a series of olefin‐linked 2D COFs is fabricated with high crystallinity, porosity, and robustness using a melt polymerization method without adding volatile organic solvents. It is found that regulation of the spatial distances between the acceptor units (triazine and 2, 2'‐bipyridine) of COFs to match the charge carrier diffusion length can dramatically promote the exciton dissociation, hence leading to outstanding photocatalytic H2 evolution performance. The COF with the appropriate acceptor distance achieves exceptional photocatalytic H2 evolution with an apparent quantum yield of 56.2% at 475 nm, the second highest value among all COF photocatalysts and 70 times higher than the well‐studied polymer carbon nitride. Various experimental and computation studies are then conducted to in‐depth unveil the mechanism behind the enhanced performance. This study will provide important guidance for the design of highly efficient organic semiconductor photocatalysts.
Constructing single‐atom Ni on N‐doped carbon via chelation‐anchored strategy for the hydrogenolysis of lignin
Authors: Li Tianjin , Chen Bo , Cao Meifang , Ouyang Xinping , Qiu Xueqing , Li Changzhi 
Published: August 2022

AbstractThe efficient utilization of lignin remains a great challenge due to its complex nonrepetitive structure and the lack of efficient catalyst. Herein, a single‐atom catalyst Ni@N‐C was designed via a facile chelation‐anchored strategy. Ni atoms were immobilized on the N‐doped carbon carrier by a two‐stage pyrolysis of a mixture of d‐glucosamine hydrochloride, nickel acetate, and melamine. d‐glucosamine hydrochloride as a chelating agent prevented the aggregation of Ni2+, and melamine provided enough N to anchor Ni by forming Ni–N4 structure. Ni@N‐C gave a 31.2% yield of aromatic compounds from lignin hydrogenolysis, which was twice higher than that achieved by Ni cluster catalyst. Based on the experimental and density functional theory (DFT) calculation results, the higher activity of Ni@N‐C was attributed to its lower H2 dissociation energy and the reduced energy barriers of the transition states. The strategy described opens an efficient green avenue for preparing single‐atom catalyst that possesses outstanding activity in lignin depolymerization.
Predictors of champion behaviors in an evidence‐based parenting program: A structural equation modeling approach
Authors: Ma Tianyi , Tellegen Cassandra L. , Sanders Matthew R. 
Published: August 2022

AbstractThe importance of champions in the implementation of evidence‐based public health programs has been well established. Champions perform a range of behaviors which can have significant influence on the adoption and sustainability of interventions. This study investigates champion behaviors in parenting practitioners with the aim to provide insight into the range and extent that practitioners engage in champion behaviors and to examine predictors of practitioners' champion behaviors using structural equation modeling. Data were collected during a large international implementation survey of 1606 practitioners trained to deliver an evidence‐based parenting program, the triple P—Positive Parenting Program. We developed a 13‐item Champion Behaviors Scale which was administered alongside other measures of predictors of implementation outcomes. Perceived usefulness of the program was the most important facilitator of both public and personal champion behaviors. Certain desirable features of the program tended to not only be positively associated with the perceived usefulness of the program, but also had a unique impact on practitioners' personal champion behaviors. Higher positions within organizations were linked with more public champion behaviors. Although organizational support was found to be unrelated to champion behaviors in the structural model, it facilitated other predictors of champion behaviors.
Dehydrogenation of Ammonia Borane by Platinum‐Nickel Dimers: Regulation of Heteroatom Interspace Boosts Bifunctional Synergetic Catalysis
Authors: Chen Si , Gong Bingbing , Gu Jian , Lin Yue , Yang Bing , Gu Qingqing , Jin Rui , Liu Qin , Ying Wenxiang , Shi Xianxian , Xu Wenlong , Cai Lihua , Li Yin , Sun Zhihu , Wei Shiqiang , Zhang Wenhua , Lu Junling 
Published: August 2022

AbstractRegulation of the atom‐atom interspaces of dual‐atom catalysts is essential to optimize the dual‐atom synergy to achieve high activity but remains challenging. Herein, we report an effective strategy to regulate the Pt1‐Ni1 interspace to achieve Pt1Ni1 dimers and Pt1+Ni1 heteronuclear dual‐single‐atom catalysts (HDSACs) by tailoring steric hindrance between metal precursors during synthesis. Spectroscopic characterization reveals obvious electron transfers in Pt1Ni1 oxo dimers but not in Pt1+Ni1 HDSAC. In the hydrolysis of ammonia borane (AB), the H2 formation rates show an inverse proportion to the Pt1‐Ni1 interspace. The rate of Pt1Ni1 dimers is ≈13 and 2 times higher than those of Pt1 and Pt1+Ni1 HDSAC, manifesting the interspace‐dependent synergy. Theoretical calculations reveal that the bridging OH group in Pt1Ni1 dimers promotes water dissociation, while Pt1 facilitates the cleavage of B−H bonds in AB, which boosts a bifunctional synergy to accelerate H2 production cooperatively.
Evaluation and mechanism of interaction effect between thermoplastic polyurethane elastomer modified asphalt and fillers
Authors: Jin Xin , Wang Fengchi , Yang Yanhai , Guo Naisheng , Zhang Huaizhi , Liu He 
Published: August 2022

AbstractThermoplastic polyurethane (TPU) elastomer modified asphalt mastic is regarded as a two‐phase composite composed of TPU modified asphalt and filler according to the micro‐mechanics theory of composites, and its rheological properties are affected by various types of asphalt, mineral filler, and dosage. In this study, different kinds of fillers (limestone, granite, fly‐ash, coal gangue) and TPU modified asphalt (grade of base asphalt labeled as 90# and polyether‐based TPU modified asphalt with Ch = 40, r = 1.05 through a self‐determined laboratory process) were prepared into asphalt mastic. The dynamic shear rheology and bending beam rheology (BBR) were used to test and evaluate the high and low temperature rheological properties of TPU modified asphalt mastic with different kinds of fillers. The scanning electron microscopy, atomic force microscopy, Brunauer, Emmett, and Teller method, X‐ray diffraction, Fourier transform infrared spectroscopy, and other tests were used to analyze the interaction mechanism between fillers and TPU modified asphalt. The results indicated that the enhancement coefficients and of different fillers are obtained based on the |G*| and S master curve, and the optimum ratio range in TPU modified asphalt with different kinds of fillers are from 1.04 to 1.41. The interaction parameters Luis Ibrarra‐A (A‐values) and Palierne‐C (C‐values) were obviously better than K. Ziegel‐B (B‐values) and Complex shear modulus coefficient (‐values). The surface of coal gangue was rough and emerged micro‐void, the BET specific surface area reached 2.681 m2/g, which was the largest than the other fillers, and the interaction with TPU modified asphalt was the strongest due to the C‐value is 1.562. The chemical composition of coal gangue played an important role in the interaction with asphalt. Physical adsorption is the main mechanism between TPU modified asphalt and fillers. The absorption peak of the original TPU modified asphalt disappeared at 3343 cm−1, and more CaO and Al2O3 in coal gangue are helpful to improve the interaction ability with TPU modified asphalt. There is a significant correlation between the number and area ratio of “bee‐like structure” in TPU modified asphalt mastic and interaction coefficient C‐values.
Synthesis, Biological Evaluation and Docking Study of Mono‐ and Di‐Sulfonamide Derivatives as Antioxidant Agents and Acetylcholinesterase Inhibitors
Authors: Güngör Seyit Ali , Şahin İrfan , Güngör Özge , Tok Tugba Taskin , Köse Muhammet 
Published: August 2022

AbstractMono(M1–M5)‐ and di(DM1–DM5)‐sulfonamide derivatives were synthesized by the reaction of 4‐iodobenzenesulfonyl chloride compound and aniline derivatives in basic medium. The structures of sulfonamide derivatives were characterized by spectroscopic and X‐ray diffraction methods. All compounds were screened for acetylcholinesterase (AChE) inhibitory studies and 2,2‐diphenyl‐1‐picrylhydrazil (DPPH) radical scavenging activities. Among the compounds tested, compoundM1showed the best activity against both AChE (IC50=42.09 μg/mL for AChE) and DPPH (IC50=9.94 μg/mL for DPPH). By placing compounds at the active site of AChE, their binding energies and modes were determined. Docking studies were performed in order to investigate binding interaction between the synthesized compounds and AChE. The most activeM1compound showed its low CDOCKER energy (−65,834 kcal/mol).
Genomic Variants Disrupt miRNA‐mRNA Regulation
Authors: Xi Ellie , Bai Judy , Zhang Klaira , Yu Hui , Guo Yan 
Published: August 2022

AbstractMicro RNA (miRNA) and its regulatory effect on messenger RNA (mRNA) gene expression are a major focus in cancer research. Disruption in the normal miRNA‐mRNA regulation network can result in serious cascading biological repercussions. In this study, we curated miRNA‐related variants from major genomic consortiums and thoroughly evaluated how these variants could exert their effects by cross‐validating with independent functional knowledge bases. Nearly all known variants (more than 664 million) categorized by type (germline, somatic, epigenetic) were mapped to the genomic regions involved in miRNA‐mRNA binding (miRNA seeds and miRNA‐mRNA 3’‐UTR binding sequence). Subsets of miRNA‐related variants supported by additional functional evidence, such as expression Quantitative Trait Loci (eQTL) and Genome‐Wide Association Study (GWAS), were identified and scrutinized. Our results show that variants in miRNA seeds can substantially alter the composition of a miRNA's target mRNA set. Various functional analyses converged to reveal a post‐transcriptional complex regulatory network where miRNA, eQTL, and RNA‐binding protein intertwined to disseminate the impact of genomic variants. These results may potentially explain how certain variants affect disease/trait risks in genome wide association studies.
Recalcitrant giant orf recurrence after amputation: A case report and review of the literature
Authors: Saeidi Vahide , Aminizade Elahe , Kalantari Yasamin , Goodarzi Azadeh 
Published: August 2022

AbstractOrf is caused by a parapoxvirus. We present a recurrent, giant digital orf case in a female patient with a history of hairy cell leukemia. In spite of shave excision, the lesion progressed and recurred after digital amputation. Treatment with topical imiquimod cream and systemic subcutaneous interferon alfa‐2a was successful.
A massive colorectal lithobezoar in a 32‐year‐old woman
Authors: Harbi Houssem , Bouzid Ahmed 
Published: August 2022

AbstractA 32‐year‐old female patient with a history of iron deficiency and mental retardation, presented with chronic constipation and painful defecation related to a massive colorectal lithobezoar. She was successfully treated with laxatives and daily rectal enema.
Spinal Paget's disease with bilevel cord compression and ischemic non‐compressive myelopathy treated with zoledronic acid
Authors: Feki Afef , Sellami Imen , Gassara Zouhour , Ben Djemaa Samar , Ezzeddine Mariam , Kallel Mohamed Hedi , Fourati Hela , Akrout Rim , Baklouti Sofien 
Published: August 2022

AbstractCord compression and ischemic non‐compressive myelopathy are a complication of spinal Paget's disease (SPD). SPD usually touches a single spine level. We report an unusual case with bilevel spinal cord compression and dysfunction which was medically treated due to resolution of the vascular steal syndrome.
Intrapelvic malignant nerve sheath tumors presenting as acute urinary retention: A case report and literature review
Authors: Ariafar Ali , Ahmed Faisal , Hosseini Seyed Hossein , Khorshidi AbdolAzim , Torabi‐Nezhad Simin 
Published: August 2022

AbstractMalignant nerve sheath tumors (MPNSTs) are rare sarcomas tumors which rarely present as intrapelvic mass and are hard to diagnose clinically. We present a 29‐year‐old male patient presented with acute urinary retention and was diagnosed with large intrapelvic mass. After complete surgical resection, the histopathology confirmed the diagnosis of low MPNST.
Microhydration of Phenyl Formate: Gas‐Phase Laser Spectroscopy, Microwave Spectroscopy, and Quantum Chemistry Calculations
Authors: Panwaria Prakash , Juanes Marcos , Mishra Kamal K. , Saragi Rizalina , Borish Kshetrimayum , Usabiaga Imanol , Camiruaga Ander , Fernández José A. , Lesarri Alberto , Das Aloke 
Published: August 2022

AbstractHerein, we have investigated the structure of phenyl formate⋅⋅⋅water (PhOF⋅⋅⋅H2O) dimer and various non‐covalent interactions present there using gas‐phase laser spectroscopy and microwave spectroscopy combined with quantum chemistry calculations. Two conformers of PhOF⋅⋅⋅H2O (C1 and T1), built on the two cis/trans conformers of the bare molecule, have been observed in the experiment. In cis‐PhOF, there is an nCO→
interaction between the lone‐pair orbital of the carbonyl oxygen atom and the π* orbital of the phenyl ring, which persists in the monohydrated C1 conformer of PhOF⋅⋅⋅H2O according to the NBO and NCI analyses. On the other hand, this interaction is absent in the trans‐PhOF conformer as the C=O group is away from the phenyl ring. The C1 conformer is primarily stabilized by an interplay between O−H⋅⋅⋅O=C hydrogen bond and O−H⋅⋅⋅π interactions, while the stability of the T1 conformer is primarily governed by the O−H⋅⋅⋅O=C hydrogen bond. The most important finding of the present work is that the conformational preference of the PhOF monomer is retained in its monohydrated complex.
Highly Photostable Mixed‐Halide Blue CsPbBr1.5Cl1.5 Perovskite Quantum Dots via Surface Treatment
Authors: Zheng Xixi , Huang Jinxin , Liu Yaoyu , Teng Bing , Ji Shaohua 
Published: August 2022

AbstractDue to its excellent optical properties, perovskite materials have a wide range of application prospects in the field of optoelectronics. Nevertheless, traditional Pb‐based perovskite quantum dots (QDs), especially blue‐emission quantum dots, have attracted more attention because of their poor stability. Moreover, the poorly passivated quantum dots surfaces is highly susceptible by the external environment, so finding suitable surface ligands not only enhances the photoluminescence (PL) performance but also improves the optical stability. In this work, mixed‐halide blue CsPbBr1.5Cl1.5 perovskite quantum dots are synthesized rapidly by the hot‐injection method. The SCN− (thiocyanate) also modifies the surface of QDs to enhance PL intensity. Then, the short‐chain ligand thiol can be exchanged with the traditional long‐chain ligand for improving stability. After a series of surface treatments, the morphology of the quantum dots always maintains the cubic phase and the fluorescence intensity increases by 34.8%. The photostability of the experimental sample is improved.
[3+3] Cycloadditions of Azomethine Ylides with Nitrile Imines for the Synthesis of 2,3,4,5‐Tetrahydro‐1,2,4‐Triazine‐5‐Carboxylates
Authors: Gao Limei M. , Wang Xiaomeng M. , Wei Qinglang L. , Su Kexin X. , Huang Renhong H. , Guo Ju , Zheng Yongsheng S. , Liu Jikai K. 
Published: August 2022

AbstractAn unprecedented and efficient [3+3] cycloaddition of azomethine ylides with nitrile imines has been achieved. A series of 2,3,4,5‐tetrahydro‐1,2,4‐triazine‐5‐carboxylates were obtained in moderate to excellent yields. Notable features of this reaction include readily accessible reagents, broad substrate scope (34 examples), mild reaction conditions and operational simplicity.