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Journal of Applied Polymer Science 2024年第9期141卷

作者： Pooja P Nayak Arun Varghese Sunaja Devi K R Dephan Pinheiro Contribution: Conceptualization (lead) Data curation (lead) Formal analysis (lead) Investigation (lead) Methodology (lead) Writing - original draft (lead) Contribution: Data curation (supporting) Investigation (supporting) Methodology (supporting) Writing - original draft (supporting) Writing - review & editing (supporting) Contribution: Conceptualization (equal) Data curation (equal) Supervision (lead) Validation (lead) Writing - review & editing (equal) Contribution: Supervision (supporting) Validation (supporting) Writing - review & editing (equal)

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Diborylmethyl Group as a Transformable Building Block for the Diversification of Nitrogen-Containing Molecules

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Angewandte Chemie 2022年第37期134卷

作者： Chiwon Hwang Dr. Yeosan Lee Minjae Kim Younggyu Seo Prof. Dr. Seung Hwan Cho Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea Contribution: Data curation (lead) Formal analysis (lead) Writing - original draft (lead) Contribution: Data curation (supporting) Formal analysis (supporting) Writing - original draft (supporting) Contribution: Data curation (supporting) Formal analysis (supporting) Contribution: Data curation (supporting) Institute for Convergence Research and Education in Advanced Technology (I-CREATE) Yonsei University Seoul 03722 Republic of Korea Contribution: Conceptualization (lead) Funding acquisition (lead) Supervision (lead) Writing - review & editing (lead)

The development of new approaches to installing diverse carbon fragments to a nitrogen atom has attracted considerable attention in chemical science. While numerous strategies have been devised to forge C(sp 3 )−N bonds, one conceptually powerful and straightforward approach is to insert a transformable sp 3 -carbon unit onto a nitrogen atom for modular diversification. Here we describe the successful synthesis of halo-diborylmethanes and their applications to the preparation of nitrogen-substituted diborylmethanes through their homologative coupling with a variety of nitrogen nucleophiles including biologically relevant molecules. This process exhibits a remarkably broad substrate scope, and the usefulness of the obtained compounds is demonstrated by the modular diversification of the diborylmethyl group to access various nitrogen-containing molecules.

关键词： Boron Diversification Halo-Diborylmethane Homologation Nitrogen

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Cover Image, Volume 140, Issue 4

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Journal of Applied Polymer Science 2022年第4期140卷

作者： Wei Wu Hailan Zeng Weiran Zhang Weili Zhang Haiyun Jiang Guohua Wu Ziyu Li Xiang Wang Yiyang Huang Zhiyong Lei Contribution: Writing - original draft (lead) Contribution: Software (equal) Contribution: Data curation (equal) Contribution: Conceptualization (equal) Contribution: Supervision (lead) Contribution: Visualization (equal) Contribution: Project administration (equal) Contribution: Resources (equal) Contribution: Investigation (lead) Contribution: Project administration (lead)

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Cover Image, Volume 14, Issue 3

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Reviews in Aquaculture 2022年第3期14卷

作者： Shuang-lin Dong Yun-wei Dong Ling Cao Johan Verreth Yngvar Olsen Wen-jing Liu Qi-zhi Fang Yan-gen Zhou Li Li Jing-yu Li Yong-tong Mu Patrick Sorgeloos Contribution: Conceptualization Methodology Writing - original draft Contribution: Conceptualization Methodology Visualization Contribution: Conceptualization Writing - review & editing Contribution: Methodology Writing - review & editing Contribution: Writing - review & editing Contribution: Data curation Validation Contribution: Methodology

The cover image is based on the Review Article Optimization of aquaculture sustainability through ecologicalintensification in China by Shuang-lin Dong et al., https://***/10.1111/raq.12648

The cover image is based on the Review Article Optimization of aquaculture sustainability through ecological intensification in China by Shuang-lin Dong et al., https://***/10.1111/raq.12648

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Comparative in silico, in vitro and ex vivo anti-inflammatory activity of quercetin

MedComm – Future Medicine

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MedComm – Future Medicine 2023年第3期2卷

作者： Shruti S. Choubey Avtar S. Gautam Lasure Vaibhav Shikha Asthana Anjuman Nanda Mangaldeep Dey Rakesh K. Singh Department of Pharmacology and Toxicology National Institute of Pharmaceutical Education and Research Lucknow Uttar Pradesh India Contribution: Conceptualization (equal) Data curation (equal) Formal analysis (equal) Investigation (equal) Methodology (equal) Writing - original draft (equal) Contribution: Data curation (equal) Formal analysis (equal) Methodology (equal) Writing - original draft (equal) Contribution: Data curation (equal) Formal analysis (equal) Investigation (equal) Methodology (equal) Writing - original draft (equal) Contribution: Data curation (equal) Formal analysis (equal) Visualization (equal) Contribution: Data curation (equal) Formal analysis (equal) Investigation (equal) Methodology (equal) Visualization (equal) Writing - original draft (equal) Contribution: Data curation (equal) Formal analysis (equal) Investigation (equal) Resources (equal) Visualization (equal) Contribution: Conceptualization (lead) Project administration (lead) Resources (lead) Supervision (lead) Visualization (lead) Writing - review & editing (lead)

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Genome-Wide Mapping of 5′ Isoforms with 5′-Seq (vol 3, e750, 2023)

CURRENT PROTOCOLS

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CURRENT PROTOCOLS 2023年第5期3卷 e750页

作者： Gvozdenov, Zlata Harvard Medical School Department of Biological Chemistry and Molecular Pharmacology Boston Massachusetts Contribution: Conceptualization Data curation Formal analysis Funding acquisition Investigation Methodology Project administration Resources Software Supervision Validation Visualization Writing - original draft Writing - review & editing

The transcriptome is far more complex than previously assumed. Transcripts from the same gene can differ in terms of transcription start site, transcription end site, or pattern of splicing, and growing evidence supports the functional importance of these distinct transcript isoforms. Easily identifying these isoforms experimentally via library construction and high-throughput sequencing is crucial. Current library construction methods for identifying transcription start sites (5′ transcript isoforms) involve large number of steps and (expensive) reagents, utilization of cDNA intermediates for adapter ligation, and are less suitable for studying low-abundance isoforms. Here, I describe a quick protocol for the generation of sequencing libraries to define capped 5′ isoforms (5′-Seq) of various abundances in yeast and suggest a 5′ isoform data analysis pipeline. The protocol relies on the utilization of a dephosphorylation-decapping method (oligo-capping) to generate a sequencing library from mRNA fragments and is a simplification of previously published 5′ isoform protocols in terms of the handling steps, time, and cost. This method is exemplified using Saccharomyces cerevisiae mRNA, but it can be applied to various cellular systems to study the effects of 5′ transcript isoforms on transcriptional and/or translational regulation. © 2023 Wiley Periodicals LLC. This article was corrected on 13 May 2023. See the end of the full text for details. Basic Protocol : Construction of a DNA sequencing library from capped 5′ isoforms Support Protocol : Sequencing data analysis

关键词： 5′ transcript isoforms 5′-cap alternative transcription start site RNA sequencing transcriptome

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Synergic Electron and Defect Compensation Minimizes Voltage Loss in Lead-Free Perovskite Solar Cells

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Angewandte Chemie 2023年第39期135卷

作者： Gengling Liu Dr. Xianyuan Jiang Wenhuai Feng Guo Yang Xi Chen Prof. Zhijun Ning Prof. Wu-Qiang Wu Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE) Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University 510006 Guangzhou China Contribution: Data curation (lead) Methodology (lead) Writing - original draft (lead) School of Physical Science and Technology ShanghaiTech University 201210 Shanghai China Contribution: Data curation (equal) Methodology (equal) Writing - original draft (equal) Contribution: Data curation (supporting) Methodology (supporting) Contribution: Data curation (supporting) Software (supporting) Contribution: Conceptualization (lead) Project administration (lead) Supervision (lead) Writing - review & editing (lead)

Sn perovskite solar cells have been regarded as one of the most promising alternatives to the Pb-based counterparts due to their low toxicity and excellent optoelectronic properties. However, the Sn perovskites are notorious to feature heavy p-doping characteristics and possess abundant vacancy defects, which result in under-optimized interfacial energy level alignment and severe nonradiative recombination. Here, we reported a synergic “electron and defect compensation” strategy to simultaneously modulate the electronic structures and defect profiles of Sn perovskites via incorporating a traced amount (0.1 mol %) of heterovalent metal halide salts. Consequently, the doping level of modified Sn perovskites was altered from heavy p-type to weak p-type (i.e. up-shifting the Fermi level by ~0.12 eV) that determinately reducing the barrier of interfacial charge extraction and effectively suppressing the charge recombination loss throughout the bulk perovskite film and at relevant interfaces. Pioneeringly, the resultant device modified with electron and defect compensation realized a champion efficiency of 14.02 %, which is ~46 % higher than that of control device (9.56 %). Notably, a record-high photovoltage of 1.013 V was attained, corresponding to the lowest voltage deficit of 0.38 eV reported to date, and narrowing the gap with Pb-based analogues (~0.30 V).

关键词： Perovskite Tin Electric Doping Solar Cells Carrier Dynamics

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The Circularity Assessment Protocol in Cities to Reduce Plastic Pollution

Community Science

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Community Science 2024年第1期3卷

作者： J. R. Jambeck T. Maddalene K. Youngblood A. Oposa H. Perello M. Werner I. Himelboim K. Romness J. Mathis C. Keisling A. L. Brooks College of Engineering Circularity Informatics Lab University of Georgia Athens GA USA Contribution: Conceptualization Methodology Formal analysis Writing - original draft Writing - review & editing Supervision Funding acquisition Save Philippine Seas Manila Philippines Contribution: Data curation Writing - original draft Writing - review & editing Visualization Project administration Contribution: Conceptualization Methodology Formal analysis Writing - review & editing Visualization Contribution: Methodology Investigation Data curation Writing - review & editing Project administration Contribution: Investigation Data curation Writing - review & editing Contribution: Formal analysis Writing - original draft College of Journalism and Mass Communication SEE Suite University of Georgia Athens GA USA Contribution: Investigation Writing - original draft Writing - review & editing University of St. Thomas St. Paul MN USA Contribution: Investigation Data curation Writing - original draft Contribution: Investigation Data curation Contribution: Conceptualization Methodology Formal analysis Writing - original draft

The circular economy has been promoted as a solution to plastic pollution, but cities and communities bear the brunt of plastic pollution. The Circularity Assessment Protocol (CAP) is a systems method of collaborative and open data collection for communities to use for decision- and policy-making. The CAP has been utilized in 51 cities in 14 countries and is illustrated here in Metro Manila. Results include identifying manufacturing and parent companies to bring to the table; documenting most (77%) products are in single-use multi-layer film packaging; a small, but growing formal refill and reuse system; 10% of to-go food containers composed of paper-based alternatives, and a snap-shot leakage concentration of plastics to the environment that is 1.8%–2.7% of current waste generation. Community narratives emerged from a collaborative workshop and are threaded throughout opportunities identified by the CAP process to inform circularity, future actions, and policy, as a scalable way to create systems change for plastic pollution from the ground up. The Circularity Assessment Protocol, or CAP, is a collaborative framework for communities to collect data on circular materials management, like plastic packaging or food waste. This framework is illustrated for plastic packaging with a local non-governmental partner in Manila, Philippines. From this framework, local community members help to define opportunities to reduce plastic pollution.

关键词： litter macroplastic circular economy

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Thiol-Aldehyde Polycondensation for Bio-based Adaptable and Degradable Phenolic Polymers

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Angewandte Chemie 2023年第36期135卷

作者： Yu Jin Chengcheng Hu Jie Wang Yongliang Ding Junjie Shi Prof. Zhongkai Wang Dr. Shichao Xu Prof. Liang Yuan Anhui Agricultural University Anhui Provincial Engineering Center for High Performance Biobased Nylons Hefei 230036 China Contribution: Data curation (equal) Investigation (equal) Writing - original draft (supporting) Contribution: Data curation (equal) Investigation (equal) Writing - review & editing (supporting) Contribution: Data curation (supporting) Validation (equal) Visualization (lead) Contribution: Data curation (supporting) Writing - review & editing (supporting) Contribution: Investigation (supporting) Validation (supporting) Contribution: Resources (supporting) Supervision (supporting) Writing - review & editing (supporting) Chinese Academy of Forestry Institute of Chemical Industry of Forest Products Nanjing 210042 China Contribution: Conceptualization (equal) Funding acquisition (supporting) Writing - review & editing (equal) Contribution: Conceptualization (equal) Validation (supporting) Writing - review & editing (lead)

Designing sustainable materials with tunable mechanical properties, intrinsic degradability, and recyclability from renewable biomass through a mild process has become vital in polymer science. Traditional phenolic resins are generally considered to be not degradable or recyclable. Here we report the design and synthesis of linear and network structured phenolic polymers using facile polycondensation between natural aldehyde-bearing phenolic compounds and polymercaptans. Linear phenolic products are amorphous with T g between −9 °C and 12 °C. Cross-linked networks from vanillin and its di-aldehyde derivative exhibited excellent mechanical strength between 6–64 MPa. The connecting dithioacetals are associatively adaptable strong bonds and susceptible to degradation in oxidative conditions to regenerate vanillin. These results highlight the potential of biobased sustainable phenolic polymers with recyclability and selective degradation, as a complement to the traditional phenol-formaldehyde resins.

关键词： Degradable Polydithioacetals Reprocessable Sustainable Polymers Vanillin

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Porphyrin Supramolecule as Surface Carrier Modulator Imparts Hole Transporter with Enhanced Mobility for Perovskite Photovoltaics

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Angewandte Chemie 2023年第39期135卷

作者： Dr. Xijiao Mu Yajun Liu Dr. Guo-Bin Xiao Chen Xu Xingbang Gao Prof. Jing Cao State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Tianshui South road 222 Lanzhou Gansu 73000 China Contribution: Data curation (equal) Investigation (equal) Writing - original draft (equal) Contribution: Data curation (equal) Writing - original draft (equal) Contribution: Data curation (supporting)

Modulating the surface charge transport behavior of hole transport materials (HTMs) would be as an potential approach to improve their hole mobility, while yet realized for fabricating efficient photovoltaic devices. Here, an oxygen bridged dimer-based monoamine Fe III porphyrin supramolecule is prepared and doped in HTM film. Theoretical analyses reveal that the polaron distributed on dimer can be coupled with the parallel arranged polarons on adjacent dimers. This polaron coupling at the interface of supramolecule and HTM can resonates with hole flux to increase hole transport efficiency. Mobility tests reveal that the hole mobility of doped HTM film is improved by 8-fold. Doped perovskite device exhibits an increased efficiency from 19.8 % to 23.2 %, and greatly improved stability. This work provides a new strategy to improve the mobility of HTMs by surface carrier modulation, therefore fabricating efficient photovoltaic devices.

关键词： Hole Transport Material Perovskite Porphyrin Solar Cells Surface Carrier Modulator

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