bluuebunny/crossref_metadata_2025_split huggingface dataset:
Metallaphotoredox C−O and C−N Cross‐Coupling Using Donor‐Acceptor Cyanoarene Photocatalysts
Authors: Gandini Tommaso , Dolcini Luigi , Di Leo Lorenzo , Fornara Matthieu , Bossi Alberto , Penconi Marta , Dal Corso Alberto , Gennari Cesare , Pignataro Luca 
Published: October 2022

AbstractHerein we report a study on the use of donor‐acceptor cyanoarenes as photocatalysts for C−O and C−N coupling reactions promoted by nickel. We found that some of these stable and readily available organic compounds can replace the precious metal photocatalysts originally employed in these methodologies. After reaction optimization, the application scope of the best performing dyes was investigated and found to cover several nucleophiles (alcohols and amines) and aryl bromides. Control experiments, fluorescence quenching studies and examination of yield trends suggest that both etherification and amination probably proceed via a dark NiI/NiIII‐catalytic cycle initiated and sustained by a photoredox cycle involving the organic photocatalysts.
Optimal Balance in the Catalyst Dynamics Enables C(2)−H Arylation of (Benz)imidazoles and (Benz)oxazoles by an In Situ‐Generated Ni/NHC System
Authors: Khazipov Oleg V. , Shepelenko Konstantin E. , Soliev Safarmurod B. , Nikolaeva Ksenia A. , Chernyshev Victor M. , Ananikov Valentine P. 
Published: October 2022

AbstractAn efficient method for the C(2)−H arylation of (benz)imidazoles and (benz)oxazoles with aryl chlorides and aryl bromides under Ni/NHC catalysis has been developed. The main benefit of the method is the in situ generation of active Ni/NHC complexes from the air‐tolerant bench‐stable precursors NiCl2Py2, IMes⋅HCl, and potassium tert‐butoxide, which plays a dual role as base and Ni(II) to Ni(0) reductant. The approach represents a user‐friendly alternative for procedures relying on the use of toxic phosphine ligands or unstable air‐sensitive Ni(cod)2. The concept highlighted in the present study shows that mapping a competitive picture of catalyst dynamics and revealing the competitive processes towards the destruction and stabilization of catalytically active species enables a highly efficient catalytic system to be built under simple conditions.
Catalytic Transfer Hydrogenation of Lignocellulosic Biomass Model Compounds Furfural and Vanillin with Ethanol by an Air‐stable Iron(II) Complex
Authors: Ghosh Rahul , Behera Rakesh R. , Panda Surajit , Behera Sandeep K. , Jana Narayan Ch. , Bagh Bidraha 
Published: October 2022

AbstractThe chemical transformation of lignocellulosic biomass into various fine chemicals is the necessity for sustainable developments. A significant research interest has been devoted to develop catalysts for the reduction of cellulose and lignin model compounds furfural and vanillin, respectively. An iron(II) complex (1) was readily synthesized by facile coordination of NNO pincer ligand with FeCl2.4H2O. The air‐stable complex 1 was efficiently utilized for the catalytic transfer hydrogenation of furfural and vanillin using ecologically benign but challenging primary alcohol ethanol. Secondary alcohol isopropanol was also utilized. Various other biomass model compounds and structurally related aldehydes were also effectively reduced. Kinetic studies suggested first order kinetics in catalyst and zeroth order in substrate. Based on the experimental evidences and published reports, a catalytic cycle is proposed which proceed via iron(II)‐dialkoxides and alkoxide‐hydride intermediates. Finally, CHEM21 green metrics toolkit was utilized to evaluate the sustainable and green credentials of the catalytic protocols.
Carbonyl‐Containing Thermally Activated Delayed Fluorescence Emitters for Narrow‐Band Electroluminescence
Authors: Yu You‐Jun , Liu Fu‐Ming , Meng Xin‐Yue , Ding Ling‐Yi , Liao Liang‐Sheng , Jiang Zuo‐Quan 
Published: October 2022

AbstractCarbonyl‐containing derivatives show enduring vitality in the field of thermally activated delayed fluorescence (TADF) materials; they can realize high device efficiency by using both singlet and triplet excitons for electroluminescence. Recently, a system based on fused ketone/amine exhibited huge potential for constructing multi‐resonance TADF (MR‐TADF) emitters, which exhibit higher narrow‐band emission than conventional TADF emitters with twisted donor‐acceptor (D‐A) structure. Herein, we summarize current research progress in both traditional and MR‐type ketone derivatives with TADF characteristics for introducing the molecular design strategy of maintaining high device efficiency while keeping narrow‐band emission profile. We hope this review can inspire the emergence of more high‐performance narrow‐band materials.
Interfacial C−S Bonds of g‐C3N4/Bi19Br3S27 S‐Scheme Heterojunction for Enhanced Photocatalytic CO2 Reduction**
Authors: Li Xiaofeng , Zhang Jinfeng , Wang Zhongliao , Fu Junwei , Li Simin , Dai Kai , Liu Min 
Published: October 2022

AbstractStep‐scheme (S‐scheme) heterojunctions have been extensively studied in photocatalytic carbon dioxide (CO2) reduction due to their excellent charge separation and high redox ability. The built‐in electric field at the interface of a S‐scheme heterojunction serves as the driving force for charge transfer, however, the poor interfacial contact greatly restricts the carrier migration rate. Herein, we synthesized the g‐C3N4/Bi19Br3S27 S‐scheme heterostructure through in situ deposition of Bi19Br3S27 (BBS) on porous g‐C3N4 (P‐CN) nanosheets. The C−S bonds formed at the interface help to enhance the built‐in electric field, thereby promoting the charge transfer and separation. As a result, the CO2 reduction reaction performance of 10 %Bi19Br3S27/g‐C3N4 (BBS/P‐CN) reaches 32.78 μmol g−1h−1, which is 341.4 and 18.7 times higher than that of pure BBS and P‐CN, respectively. X‐ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) prove the presence of chemical bonds (C−S) between the P‐CN and BBS. The S‐scheme charge‐transfer mechanism was analyzed via XPS and density functional theory (DFT) calculations. This work provides a new idea for designing heterojunction photocatalysts with interfacial chemical bonds to achieve high charge‐transfer and catalytic activity.
Tuning the Photocatalytic Performance of Ruthenium(II) Polypyridine Complexes Via Ligand Modification for Visible‐Light‐Induced Phosphorylation of Tertiary Aliphatic Amines
Authors: Mahmood Zafar , He Jia , Cai Shuqing , Yuan Zhanxiang , Liang Hui , Chen Qian , Huo Yanping , König Burkhard , Ji Shaomin 
Published: October 2022

AbstractTuning the redox potential of commonly available photocatalyst to improve the catalytic performance or expand its scope for challenging synthetic conversions is an ongoing demand in synthetic chemistry. Herein, the excited state properties and redox potential of commercially available [Ru(bpy)3]2+ photocatalyst were tuned by modifying the structure of the bipyridine ligands with electron‐donating/withdrawing units. The visible‐light‐mediated photoredox phosphorylation of tertiary aliphatic amines was demonstrated under mild conditions. A series of cross‐dehydrogenative coupling reactions were performed employing the RuII complexes as photocatalyst giving the corresponding α‐aminophosphinoxides and α‐aminophosphonates via carbon‐phosphorus (C−P) bond formation.
Advanced Covalent Organic Frameworks for Multi‐Valent Metal Ion Batteries
Authors: Luo Xiao‐Xi , Wang Xiao‐Tong , Ang Edison Huixiang , Zhang Kai‐Yang , Zhao Xin‐Xin , Lü Hong‐Yan , Wu Xing‐Long 
Published: October 2022

AbstractCovalent organic frameworks (COFs) have received increased interest in recent years as an advanced class of materials. By virtue of the available monomers, multiple conformations and various linkages, COFs offer a wide range of opportunities for complex structural design and specific functional development of materials, which has facilitated the widespread application in many fields, including multi‐valent metal ion batteries (MVMIBs), described as the attractive candidate replacing lithium‐ion batteries (LIBs). With their robust skeletons, diverse pores, flexible structures and abundant functional groups, COFs are expected to help realize a high performance MVMIBs. In this review, we present an overview of COFs, describe advances in topology design and synthetic reactions, and study the application of COFs in MVMIBs, as well as discuss challenges and solutions in the preparation of COFs electrodes, in the hope of providing constructive insights into the future direction of COFs.
Embedded nanoFeCu for sewage treatment: Laboratory‐scale and pilot studies
Authors: Chan Mieow Kee , Kumaran Prasilla , Thomas Xavier Vigneswaran , Natasha Eva , Tee Yi Shen , Mohd Aris Alijah , Ho Yoke Ping , Khor Bee Chin 
Published: October 2022

AbstractBimetallic nanoparticles have been widely studied for wastewater treatment, but the study of nanoFeCu for sewage treatment is minimal. In the previous work, ammonia was removed by nanoFeCu via an oxidation reaction, and nitrogen gas was released. However, the performance and reusability of nanoFeCu in treating industrial wastewater have not been reported elsewhere. This study revealed the performance of nanoFeCu for sewage treatment on both laboratory‐scale and pilot‐scale for the first time. A varied mass of embedded nanoFeCu (eFeCu4) was exposed to sewage water, and the quality of the effluent was measured in terms of ammonia, biological oxygen demand (BOD), and chemical oxygen demand (COD) removal. Fe2+ and Cu2+ concentrations were measured to determine the stability of eFeCu4 in nine reuse cycles. Results showed that the laboratory‐scale experiment removed 20%–30% ammonia from sewage. A similar removal rate was reported in all nine cycles of reuse, which confirmed the usability and reliability of eFeCu4. In the pilot‐scale study, ammonia was removed from ~22.3 to ~4.8 mg/L, while BOD and COD were reduced from ~204 to ~56 mg/L and ~71 to ~39.7 mg/L, respectively. The treated effluent quality complies with the effluent discharge standard of Malaysia, and it is also comparable with the effluent quality at sewage treatment plants in Malaysia and overseas. In conclusion, nanoFeCu could be an alternative method for sewage treatment due to its stability and pollutant removal performance. A sustainability and cost‐effectiveness study should be conducted to determine the feasibility of a full‐scale application.
Facile Synthesis of Chiral α‐Hydroxy Ketones by a Ni‐Catalyzed Multicomponent Hydrometallation–CO Insertion–Enantioconvergent Alkylation Cascade
Authors: Chen Jian , Deng Gao , Wang You , Zhu Shaolin 
Published: October 2022

Comprehensive SummaryNiH‐catalyzed multicomponent reductive hydrofunctionalization of alkenes is an attractive but poorly explored approach to rapidly increasing molecular complexity. In this process, the selective generation of the desired product can be challenging. Herein, we report that a highly chemo‐, regio‐ and enantioselective reductive hydrocarbonylation of alkenes has been achieved using a chloroformate ester as a source of CO. A wide range of structurally diverse α‐hydroxy ketones, privileged structural elements in bioactive molecules and useful building blocks, were obtained from such reactions with high enantiomeric purity.
Stretchable Electrochemical Sensors: From Electrode Fabrication to Cell Mechanotransduction Monitoring†
Authors: Fan Wen‐Ting , Huang Wei‐Hua , Liu Yan‐Ling 
Published: October 2022

Comprehensive SummaryElectrochemical sensing faces huge challenges in characterizing the transient release of biochemical molecules from deformed cells, due to the severely mechanical mismatch between rigid electrodes and soft cells. In recent years, the emergence of stretchable electrochemical sensors has made a breakthrough by complying with the deformation of living cells and simultaneous monitoring of mechanically evoked biochemical signals. This review first summarizes two fundamental strategies for the fabrication of stretchable electrodes from the points of structure and material. Next, recent progresses in construction of functionalized interface to improve the performance of stretchable electrochemical sensors are presented. Then, the application of stretchable electrochemical sensors in real‐time monitoring of biomolecules released by mechanically sensitive cells is introduced. Finally, some perspectives and challenges of stretchable electrochemical sensors regarding cell detection are discussed.
What is the favorite and original chemistry developed in your research group?The design and construction of electrochemical sensing platform for real‐time monitoring of life activities.What is the most important personality for scientific research?Innovative spirit, strong curiosity and persistence.How do you supervise your students?Encourage students to think much and eager to innovate.What are your hobbies?I like music and playing badminton.Who influences you mostly in your life?My family and collaborators.Could you please give us some advices on improving Chinese Journal of Chemistry?Focusing on the originality of the manuscript.
Surface‐EnhancedRaman Spectroscopy: Principles, Methods, and Applications in Energy Systems†
Authors: He Quan‐Feng , Zhang Yu‐Jin , Yang Zhi‐Lan , Dong Jin‐Chao , Lin Xiu‐Mei , Li Jian‐Feng 
Published: October 2022

Comprehensive SummarySurface‐enhanced Raman spectroscopy (SERS) has advanced significantly since its inception. Numerous experimental and theoretical efforts have been made to understand the SERS effect and demonstrate its potential. Due to its extremely high sensitivity and selectivity and ability to provide molecular fingerprint information, SERS has a wide range of applications in surface and interfacial chemistry, energy, materials, biomedicine, environmental analysis,etc. This review aims to provide readers with an understanding of the principles, methodologies, and applications of SERS. We briefly introduce the fundamental theory of the SERS enhancement mechanism and summarize the details of the preparation of SERS‐active substrates. Recent applications of SERS in energy systems are then highlighted, including probing surface reactions and interfacial charge transfer of batteries and electrocatalysts. Finally, the challenges and prospects of SERS research are discussed.
Light‐Responsive Polyblend Films with Reconfigurable Surface Micropatterns as Rewritable Information Storage Media
Authors: Chen Jian , Yang Xiaoyu , Chen Jie , Azhar Umair , Chen Feiyan , Zhu Ruijie , Zhou Chunhua , Jiang Shichun , Wang Wei , Xu Peiming , Zong Chuanyong 
Published: October 2022

Comprehensive SummaryStimulus‐sensitive surfaces with tunable morphologies exhibit a wide range of applications in the fields of surface science and engineering. Herein, a cost‐effective yet practical strategy is proposed to fabricate photo‐sensitive patterning surface on film/substrate wrinkle system based on an azo‐containing polyblend. By manipulating the stress field of the bilayer system globally and/or locally upon the stress relaxation triggered by the reversible cis‐trans isomerization of the azobenzene, heating/cooling triggered surface wrinkles on the polyblend films could be tailor‐made with visible‐light‐irradiation. Notably, upon selective photo‐irradiation, bespoke surface patterns may be cyclically generated or eliminated, allowing these reconfigurable patterned polyblend surfaces to be used as rewritable information storage media for non‐ink printing. The as‐prepared photo‐printed information patterns with high‐resolution are shown to be rewritable for multiple cycles and legible for over 90 d in dark ambient conditions. This study not only provides a versatile strategy for flourishing the stimulus‐sensitive systems, but also sheds light on the stress relaxation‐triggered morphological evolution of the wrinkling polyblend films.
Rigid POSS Nanofiller Regulated the Interfacial Self‐assembly of Particles into 2D Monolayer Superlattice with Fixed Interparticle Spacing†
Authors: Zhao Yu , Wang Xiaoyuan , Luo Xiaoning , Song Liping , Su Fengmei , Huang Youju 
Published: October 2022

Comprehensive SummaryPlasmonic superlattices of nanoparticles (NPs) possess unique “surface lattice resonances” properties that facilitates their wide applications in plasmonic sensing, photocatalysis, and nanoscale light manipulation. However, it is still challenging to manufacture superlattices with precisely controllable NPs distance and break the size limitation of NPs. Herein, we provided an effective strategy to construct NPs superlattices via shape‐persistent polyhedral oligosilsesquioxane (POSS) molecular nanoparticles govern interfacial assembly. As a nanoscale molecule with diameter of 1.5 nm, the POSS‐SH molecule provides sufficient rigid steric hindrance and hydrophobic effect for tailoring the uniformity and controllable distance between NPs in superlattices. Interestingly, synergistically with hydrophilic ligands of polyethylene glycol (PEG‐SH) with optimized ratio, the rigid POSS ligands can effectively regulate the distance between NPs in a fixed range of 2.3—2.8 nm, which is independent of ligands molecular weight and particle size. Furthermore, the effective approach can be universal to anisotropic NPs for manufacturing monolayer films with high NPs density. We believe this nanoscale molecule tailored interfacial self‐assembly strategy can effectively break the size of NPs and assembly obstacles for superlattice monolayer film. Additionally, the definite distance between NPs in superlattices can minimize optical energy attenuation and facilitates the applications such as surface‐enhanced Raman spectroscopy and photocatalysis.
Strategies toward Metal‐Free Carbon Monoxide Prodrugs: An Update
Authors: Min Qingqiang , Ji Xingyue 
Published: October 2022

AbstractCarbon monoxide is an important gasotransmitter in mammals, with pleiotropic therapeutic potential against a wide range of human diseases. However, clinical translation of CO is severely hampered by the lack of a reliable CO delivery form. The development of metal‐free CO prodrugs is the key to resolving such delivery issues. Over the past three years, some new exciting progress has been made in this field. In this review, we highlight these advances and discuss related issues.
Association of neighborhood‐level social determinants of health with psychosocial distress in patients newly diagnosed with lung cancer
Authors: Emidio Oluwabunmi M. , Cutrona Sarah L. , Person Sharina D. , Mazor Kathleen M. , Frisard Christine , Lemon Stephenie C. 
Published: October 2022

AbstractBackground and AimPatients with lung cancer experience high rates of psychosocial distress. They are also more likely to have unresolved, unmet social needs which may contribute to psychosocial distress. Despite this, neighborhood‐level social determinants of health (SDOH) in relation to psychosocial distress have not been adequately investigated in patients with lung cancer. The goal of this study is to examine the association between neighborhood‐level SDOH and psychosocial distress among a sample of newly diagnosed patients with lung cancer.MethodsThis cross‐sectional study included newly diagnosed, adult lung cancer patients from an accredited cancer center. Psychosocial distress was measured with the Distress Thermometer. Neighborhood‐level SDOH indicators for income and education were used to create a composite SDOH variable categorized into low, medium, and high deprivation levels. Covariates were age, gender, race/ethnicity, comorbidity index, cancer stage, and insurance status. Using multivariate logistic regression modeling, the association of psychosocial distress with the neighborhood‐level SDOH was examined.ResultsThe prevalence of psychosocial distress in the sample was 58.4%. Neighborhood‐level SDOH indicators were not significantly associated with psychosocial distress. Higher odds of psychosocial distress were significantly associated with being female and having distant or regional cancer versus localized cancer. The age group 66–75 years was significantly associated with lower distress compared with those aged <65 years.ConclusionsPsychosocial distress was consistently high across all the SDOH deprivation categories; but these neighborhood‐level SDOH indicators do not appear to be predictive of psychosocial distress at the time of diagnosis of lung cancer.
Digital learning experiences and spaces: Learning from the past to design better pedagogical and curricular futures
Authors: Bough Ashley , Martinez Sainz Gabriela 
Published: October 2022

AbstractOver 60 years of technology development, transformation of educational policy and curriculum innovation in Ireland have resulted in the introduction of the Computer Science (CS) subject in Post‐Primary (PP) Education. CS has always been conceived digitally and the Digital Learning Experiences (DLE) enacted through its curriculum are strongly interconnected to the opportunities and limitations offered by Digital Spaces (DS). However, key challenges have been identified for the successful implementation of CSE, from teachers' digital competencies and educational strategies in the classroom to learners' varying experiences of CSE. Through a systematic literature review of the educational policies and practices in Ireland's Educational System, this paper documents the digital evolution from the 1960s accounting for the CS curriculum. The literature review identifies key themes in how DS have been conceptualised through CSE, responding to learners' needs and teachers' skills and competencies, informed by emerging societal demands by providing evidence on the disparity between educational policy and practice for DS. Building upon the identified themes, this paper emphasises the importance of the design and implementation of DLE in DS such as the CS subject that considers historical lessons learned to respond to the uncertainties of the digital future.
Circularly polarized patch antenna with simultaneously wide frequency tuning range and high gain performance
Authors: Deng Lianwen , Liu Long , Zhou Daohan , Tang Chao , Huang Shengxiang , Gao Xiaohui , Qiu Lei‐Lei 
Published: October 2022

SummaryA tunable circularly polarized square patch antenna with parasitic elements is designed for a wide frequency tuning range and high gain characteristics. The proposed antenna is constructed by one main patch and four semi‐elliptic parasitic units. By loading four varactor diodes and adjusting their capacitance values, the tunable feature is performed to reallocate the corresponding working frequency. Moreover, the diagonal corners of the antenna are cut and loaded with varactor diodes, which provide the appropriate perturbation between the two orthogonality modes of the antenna, so as to ensure the circular polarization characteristic in the entire operating tuning band. The experimental results demonstrate that the reflection coefficient and axial ratio are less than −13 dB and 3 dB, respectively. The proposed antenna features a relatively wide continuously tuning range of 24% within 1.9‐2.3 GHz and a stable gain of over 7 dBi with a radiation efficiency of above 85%.