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Innentitelbild: Nachhaltiger Eisen-Photokatalysator auf Holzbasis für vielfältige Anwendungen mit Sonnenlicht: Wasseraufbereitung und radikalische Photopolymerisation (Angew. Chem. 27/2023)

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Angewandte Chemie 2023年第27期135卷

作者： Xiaolin Guo Xinpeng Zhao Dr. Xiongfei Luo Dr. Yulian Pang Prof. Dr. Bing Tian Prof. Dr. Shouxin Liu Prof. Dr. Shujun Li Prof. Dr. Jian Li Prof. Dr. Bernd Strehmel Prof. Dr. Zhijun Chen Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin 150040 VR China Diese Autoren haben zu gleichen Teilen zu dieser Arbeit beigetragen. College of Chemistry Beijing Normal University Beijing 100875 VR China Fachbereich Chemie und Institut für Lacke und Oberflächenchemie Hochschule Niederrhein Adlerstr. 1 47798 Krefeld Deutschland

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Typ-I-Photoinitiator auf der Basis nachhaltiger Kohlenstoffpunkte

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Angewandte Chemie 2024年第29期136卷

作者： Ruiping Li Hongda Guo Dr. Xiongfei Luo Dr. Qunying Wang Dr. Yulian Pang Prof. Dr. Shujun Li Shouxin Liu Prof. Dr. Jian Li Prof. Dr. Bernd Strehmel Prof. Dr. Zhijun Chen Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Hexing Road 26 150040 Harbin P. R. China Heilongjiang International Joint Lab of Advanced Biomass Materials Northeast Forestry University Hexing Road 26 150040 Harbin China Die Autoren haben gleichermaßen beigetragen. Fachbereich Chemie Institut für Lacke und Oberflächenchemie Hochschule Niederrhein Adlerstr. 1 D-47798 Krefeld Deutschland Hubei Gurun Technology Co. LTD Jingmen Chemical Recycling Industrial Park 448000 Jingmen Hubei Province P. R. China

Nachhaltige Kohlenstoffpunkte, die an der Oberfläche Oximestergruppen enthalten, welche einer homolytischen Bindungsspaltung folgen, zeigen ein Potential als Photoinitiatoren für die traditionelle freie radikalische Photopolymerisation. Die Kohlenstoffpunkte wurden nach einem solvothermalen Verfahren aus nachhaltigem Furfural, welches über Lignocellulose erhältlich ist, hergestellt. Aldehydgruppen der Oberfläche reagierten mit Hydroxylamin zu dem entsprechendem Oxim, während die Reaktion mit Benzoylchlorid zu einem bio-basierten Typ I Photoinitiator ( CD-PI ) führte, welcher nachhaltige Kohlenstoffpunkte enthält. Die Fähigkeit zur Photoinitiierung wurde unter UV-Bestrahlung bei 365 nm mit dem traditionellen Photoinitiator ( PI ) Ethyl (2,4,6-trimethyl benzoyl) phenyl phosphinat ( TPO - L ) mittels Echtteit FTIR Spektroskopie verglichen. Die auf einem Gemisch von Urethandimethacrylat ( UDMA ) und Tripropylenglykoldiacrylat ( TPGDA ) basierte Photopolymerzusammensetzung führte unter Verwendung von CD-PI oder TPO-L zu einem ähnlichen Endumsatz von etwa 70 %. Dennoch erschien das vernetzte material im Fall der Zusammensetzungen, die mit CD-PI verarbeitet wurden, homogen, während jene, die mit TPO-L hergestellt wurden, heterogen waren, was durch die beiden Glasübergangstemperaturen gezeigt wurde. Außerdem war die Migrationsgeschwindigkeit von CD-PI in den gehärteten Proben geringer im Vergleich zu jenen Proben für die TPO-L als PI eingesetzt wurde.

关键词： radikalische Photopolymerisation nachhaltiger Kohlenstoffpunkt Typ I Photoinitiator Netzwerkpolymer Oximester

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Exploring the Circular Polarization Capacity from Chiral Cellulose Nanocrystal Films for a Photo-Controlled Chiral Helix of Supramolecular Polymers

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Angewandte Chemie 2022年第18期134卷

作者： Mingcong Xu Guangyao Li Prof. Wei Li Bang An Jiaming Sun Prof. Zhijun Chen Prof. Haipeng Yu Prof. Jian Li Prof. Guang Yang Prof. Shouxin Liu Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University 26 Hexing Road Harbin 150040 P. R. China Department of Chemistry and Chemical Engineering College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University 26 Hexing Road Harbin 150040 P. R. China

Circularly polarized light (CPL) is key to asymmetric photochemistry as it could impart the chiral organization information into chemical products. Here, we demonstrate the circular polarization capacity of chiral cellulose nanocrystal (CNC) films to trigger photo-alignment of achiral supramolecular polymers into helical structures. Right-handed transmitted (T-) CPL was generated from self-assembled CNC films, which induced amorphous azobenzene (Azo) supramolecular polymers into chiral structures. The chiral induction effect of T-CPL is enhanced on Azo polymers with longer spacers. The absorptive dissymmetry factor ( g abs ) values of liquid-crystal supramolecular polymers can be amplified significantly (over 10 times) after T-CPL irradiation. Moreover, by integrating carbon dots into CNC films, CPL emission with a considerable luminescence dissymmetry factor ( g lum ) up to −0.66 was achieved, and it could be used for the photo-alignment of Azo polymers with high chiroptical properties. This work provides new insight for the photo modulation of supramolecular polymers by CPL-active materials.

关键词： Cellulose Nanocrystals Chirality Circularly Polarized Light Photo-Alignment Supramolecular Polymers

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Using Artificial Neural Networks (ANN) for Modeling Predicting Hardness Change of Wood during Heat Treatment 5

Using Artificial Neural Networks (ANN) for Modeling Predicti...

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2018 5th International Conference on Advanced Composite materials and Manufacturing Engineering, ACMME 2018

作者： Van Nguyen, Thi Hai Nguyen, Tat Thang Ji, Xiaodi Lanh Do, Khoa Thi Guo, Minghui Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin150040 China Vietnam National University of Forestry Viet Nam

In this study, an artificial neural network (ANN) model was built to study the relationship between the process parameters of heat treatment and the hardness of wood. Three important parameters: temperature (170, 180, 190, 200 and 210°C), treatment time (2, 4, 6 and 8h), and wood species (Larch and Poplar) were considered as the inputs to the neural network. There were four neurons in the hidden layer that were used, and an output layer as wood hardness. According to the results, the mean absolute percentage errors (MAPE) were determined as 0.1167%, 0.355% and 1.34% in the prediction of wood hardness values for training, validation, and testing data sets. Determination coefficients (R2) greater than 0.99 were obtained for all data sets with the proposed ANN models. These results show that ANN models can be used successfully for predicting hardness changes hardness of wood during heat treatment. © Published under licence by IOP Publishing Ltd.

关键词： Wood

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Flexible Electronics: Flexible, Strong, Anisotropic Wood-Derived Conductive Circuit (Adv. Sustainable Syst. 6/2021)

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Advanced Sustainable Systems 2021年第6期5卷

作者： Hao Sun Tong Ji Hongjie Bi Xin Lin Chen Chen Min Xu Liping Cai Zhenhua Huang Key Laboratory of Bio-Based Material Science and Technology Ministry of Education School of Material Science and Engineering Northeast Forestry University Harbin 150040 P. R. China Department of Mechanical Engineering University of North Texas Denton TX 76203 USA College of Materials Science and Engineering Nanjing Forestry University Nanjing 210037 P. R. China

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二维材料最新研究进展

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物理化学学报 2021年第12期37卷 1-151页

作者：常诚陈伟陈也陈永华陈雨丁峰樊春海范红金范战西龚成宫勇吉何其远洪勋胡晟胡伟达黄维黄元季威李德慧李连忠李强林立凌崇益刘鸣华刘楠刘庄 Kian Ping Loh 马建民缪峰彭海琳邵明飞宋礼苏邵孙硕谭超良唐智勇王定胜王欢王金兰王欣王欣然 Andrew T.S.Wee 魏钟鸣吴宇恩吴忠帅熊杰熊启华徐伟高尹鹏曾海波曾志远翟天佑张晗张辉张其春张铁锐张翔赵立东赵美廷赵伟杰赵运宣周凯歌周兴周喻朱宏伟张华刘忠范 Institute of Science and Technology Austria Am Campus 13400 KlosterneuburgAustria Department of Chemistry National University of Singapore3 Science Drive 3117543Singapore Department of Chemistry The Chinese University of Hong KongShatinNew TerritoriesHong KongChina Key Laboratory of Flexible Electronics and Institute of Advanced Materials Nanjing Tech UniversityNanjing 211816China School of Life Sciences Shanghai UniversityShanghai 200444China Centre for Multidimensional Carbon Materials Institute for Basic ScienceUlsan 44919Korea School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371Singapore Department of Chemistry City University of Hong KongKowloonHong KongChina Department of Electrical and Computer Engineering and Quantum Technology Center University of MarylandCollege ParkMaryland 20742USA School of Materials Science and Engineering Beihang UniversityBeijing 100191China Department of Materials Science and Engineering City University of Hong KongKowloonHong KongChina Center of Advanced Nanocatalysis(CAN) Hefei National Laboratory for Physical Sciences at the MicroscaleDepartment of Applied ChemistryUniversity of Science and Technology of ChinaHefei 230026China College of Chemistry and Chemical Engineering State Key Laboratory of Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy Materials(iChEM)Xiamen UniversityXiamen361005Fujian ProvinceChina State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing100081China Beijing Key Laboratory of Optoelectronic Functional Materials&Micro-Nano Devices Department of PhysicsRenmin University of ChinaBeijing 100872China School of Optical and Electronic Information Wuhan National Laboratory

Research on two-dimensional(2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications. In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief backgroundintroduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials(PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field.

关键词： Two-dimensional materials Transition metal dichalcogenides Phase engineering of nanomaterials Electronics Optoelectronics Catalysis Energy storage and conversion

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Back Cover: Distinct Sustainable Carbon Nanodots Enable Free Radical Photopolymerization, Photo-ATRP and Photo-CuAAC Chemistry (Angew. Chem. Int. Ed. 19/2021)

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Angewandte Chemie International Edition 2021年第19期60卷

作者： Dr. Ceren Kütahya Yingxiang Zhai Prof. Dr. Shujun Li Prof. Dr. Shouxin Liu Prof. Dr. Jian Li Prof. Dr. Veronika Strehmel Prof. Dr. Zhijun Chen Prof. Dr. Bernd Strehmel Department of Chemistry Institute for Coatings and Surface Chemistry Niederrhein University of Applied Sciences Adlerstr. 1 47798 Krefeld Germany Northeast Forestry University Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Hexing Road 26 150040 Harbin China

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Rücktitelbild: Verschiedene nachhaltige Kohlenstoffnanopunkte für die freie radikalische Photopolymerisation, die Photo-ATRP und die Photo-CuACC Chemie (Angew. Chem. 19/2021)

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Angewandte Chemie 2021年第19期133卷

作者： Dr. Ceren Kütahya Yingxiang Zhai Prof. Dr. Shujun Li Prof. Dr. Shouxin Liu Prof. Dr. Jian Li Prof. Dr. Veronika Strehmel Prof. Dr. Zhijun Chen Prof. Dr. Bernd Strehmel Fachbereich Chemie Institut für Lacke und Oberflächenchemie Hochschule Niederrhein Adlerstr. 1 47798 Krefeld Deutschland Northeast Forestry University Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Hexing Road 26 150040 Harbin China

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A sustainable and effective potassium hydroxide pretreatment of wheat straw for the production of fermentable sugars

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bioresource technology Reports 2018年 3卷 169-176页

作者： Xie, Xuejin Feng, Xiaoyan Chi, Shanshan Zhang, Yuedong Yu, Guang Liu, Chao Li, Zhenqiu Li, Bin Peng, Hui College of Marine Science and Biological Engineering Qingdao University of Science & Technology Qingdao266400 China CAS Key Laboratory of Bio-based Material CAS Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences QingdaoShandong266101 China Dalian National Laboratory for Clean Energy Chinese Academy of Sciences QingdaoShandong266101 China

The development of sustainable and effective pretreatment technology is of critical importance for the conversion of lignocelluloses into bioethanol. In this work, KOH pretreatment of wheat straw with the supplement of anthraquinone (AQ) and sodium lignosulfonate (SLS) was investigated under the relatively mild conditions. The effectiveness of KOH pretreatment was evaluated by enzymatic saccharification. It was found that after the KOH pretreatment with 15% KOH, 0.1% AQ and 2% SLS at 120 °C for 40 min, the final total sugar yields (glucose + xylose + soluble xylan) could reach up to 80%, which was 16% higher as compared to the KOH pretreatment without addition of AQ and SLS under the same conditions. In addition, the spent liquor could be reused twice to maintain a relatively good effectiveness of pretreatment, and it could be used to produce fertilizer due to the high content of potassium. © 2018 Elsevier Ltd

关键词： Potassium hydroxide

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Verschiedene nachhaltige Kohlenstoffnanopunkte für die freie radikalische Photopolymerisation, die Photo-ATRP und die Photo-CuACC Chemie

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Angewandte Chemie 2021年第19期133卷

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