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1. The Tough Journey of Polymer Crystallization: Battling with Chain Flexibility and Connectivity

Author:
Li, Liangbin,   et al.   ; Tang, Xiaoliang; Chen, Wei;     Show all 3 Authors
Source:
Macromolecules 2019 v.52 no.10 pp. 3575-3591
ISSN:
1520-5835
Subject:
crystallization; models; polymers; roots
Abstract:
... Theoretical approaches addressing the mechanism of polymer crystallization remain the great challenge in polymer science. Numerous different, or even conflicting, models/theories have been proposed during the past several decades. However, none of them can fully satisfy the whole community. In this Perspective, we first trace the roots of these models/theories back to the classical and nonclassica ...
DOI:
10.1021/acs.macromol.8b02725

2. LiCl-Accelerated Multimetallic Cross-Coupling of Aryl Chlorides with Aryl Triflates

Author:
Huang, Liangbin,   et al.   ; Ackerman, Laura K. G.; Kang, Kai; Parsons, Astrid M.; Weix, Daniel J.;     Show all 5 Authors
Source:
Journal of the American Chemical Society 2019 v.141 no.28 pp. 10978-10983
ISSN:
1520-5126
Subject:
Lewis acids; cross-coupling reactions; lithium chloride; moieties; nickel; organochlorine compounds; zinc
Abstract:
... While the synthesis of biaryls has advanced rapidly in the past decades, cross-Ullman couplings of aryl chlorides, the most abundant aryl electrophiles, have remained elusive. Reported here is the first general cross-Ullman coupling of aryl chlorides with aryl triflates. The selectivity challenge associated with coupling an inert electrophile with a reactive one is overcome using a multimetallic s ...
DOI:
10.1021/jacs.9b05461

3. Morphology diagram of PE gel films in wide range temperature‐strain space: An in situ SAXS and WAXS study

Author:
Li, Liangbin,   et al.   ; Lv, Fei; Wan, Caixia; Chen, Xiaowei; Meng, Lingpu; Chen, Xin; Wang, Daoliang;     Show all 7 Authors
Source:
Journal of polymer science 2019 v.57 no.12 pp. 748-757
ISSN:
0887-6266
Subject:
crystal structure; gels; melting; polyethylene; temperature; tensile strength
Abstract:
... Deformation‐induced structural evolution of polyethylene (PE) gel films were investigated by in situ synchrotron radiation SAXS and WAXS techniques during stretching at temperatures from 25°C to 110°C. The structural evolutions along tensile strains showed distinct behaviors in the four temperature regions divided by TαI and TαII given by DMA and the onset point of melting measured by DSC, respect ...
DOI:
10.1002/polb.24829

4. Pd Nanoparticles/F, N Codoping Graphene Composites for Oxygen Reduction and Zinc-Air Batteries

Author:
Liu, Liangbin,   et al.   ; Shen, Yuwei; Shi, Dingchang; Liao, Fan; Zhu, Wenxiang; Shao, Mingwang;     Show all 6 Authors
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.14 pp. 12281-12287
ISSN:
2168-0485
Subject:
Lewis acids; adsorption; batteries; catalysts; catalytic activity; electrochemistry; energy; graphene; hydrofluoric acid; nanoparticles; nanowires; oxygen; palladium; potassium hydroxide; silicon
Abstract:
... The electrocatalytic activity is closely associated with the electronic structure of catalysts. Electron-deficient palladium (Pd) has been proved to show better oxygen reduction reaction performance than the electrophilic one due to the downshift of the d-band center. In this work, Pd nanoparticles are uniformly dispersed in F, N-doping graphene with the assistant of silicon nanowires and hydroflu ...
DOI:
10.1021/acssuschemeng.9b01615

5. Efficient synthesis of an antiviral drug intermediate using an enhanced short-chain dehydrogenase in an aqueous-organic solvent system

Author:
Xiong, Liangbin,   et al.   ; Wu, Kai; Zheng, Kun; Yang, Zhijun; Jiang, Zhiteng; Meng, Xiangguo; Shao, Lei;     Show all 7 Authors
Source:
Applied microbiology and biotechnology 2019 v.103 no.11 pp. 4417-4427
ISSN:
0175-7598
Subject:
NAD (coenzyme); Sphingomonas; antiviral agents; biocatalysts; catalytic activity; computer simulation; enantioselectivity; enzymes; hydrophobicity; industrial applications; ketones; mass transfer; mutagenesis; mutants; solvents; toluene
Abstract:
... (2R,3S)-N-tert-Butoxycarbonyl-3-amino-1-chloro-2-hydroxy-4-phenylbutane (1b) is key for the synthesis of the antiviral drug atazanavir. It can be obtained via the stereoselective bioreduction of (3S)-3-(N-Boc-amino)-1-chloro-4-phenyl-butanone (1a) with short-chain dehydrogenase/reductase (SDR). However, the stereoselective bioreduction of this hydrophobic and bulky substrate still remained a chall ...
DOI:
10.1007/s00253-019-09781-4

6. Structural origin for the strain rate dependence of mechanical response of fluoroelastomer F2314

Author:
Li, Liangbin,   et al.   ; Chang, Jiarui; Lin, Yuanfei; Chen, Wei; Tian, Fucheng; Chen, Pinzhang; Zhao, Jingyun;     Show all 7 Authors
Source:
Journal of polymer science 2019 v.57 no.10 pp. 607-620
ISSN:
0887-6266
Subject:
crystallization; crystals; deformation; energy; mechanical properties; polymers; wide-angle X-ray scattering
Abstract:
... The structural evolution of fluoroelastomer F2314 is studied during uniaxial tensile in a large strain rate range (0.1–150 s⁻¹) with the combination of a homemade high‐speed stretching device and in situ small‐ and wide‐angle X‐ray scattering techniques. Based on the mechanical behaviors and structural evolutions, three strain rate regions (I–III) are defined. The microphase‐separated structure pl ...
DOI:
10.1002/polb.24817

7. Assessment of the toxicity and biodegradation of amino acid-based ionic liquids

Author:
Zeng, Liangbin,   et al.   ; Wu, Shuanggen; Li, Fenfang; Wang, Chaoyun; Yang, Yuanru; Tan, Zhijian;     Show all 6 Authors
Source:
RSC advances 2019 v.9 no.18 pp. 10100-10108
ISSN:
2046-2069
Subject:
Oryza sativa; amino acids; anions; biodegradability; biodegradation; cations; human health; ionic liquids; microorganisms; phytotoxicity; rice
Abstract:
... Amino acid-based ionic liquids (AAILs) are generally thought of as green solvents and widely used in many regions without systematic assessment of their effect on the environment or human health. In this work, a series of AAILs with different cations and amino acid anions were prepared and characterized, after which their microbial toxicity, phytotoxicity, and biodegradability were evaluated. The ...
DOI:
10.1039/c8ra06929h

8. Switchable Reactivity between Vinyl Azides and Terminal Alkyne by Nano Copper Catalysis

Author:
Huang, Liangbin,   et al.   ; Cen, Jinghe; Wu, Yaodan; Li, Jianxiao; Wu, Wanqing; Zhu, Zhongzhi; Yang, Shaorong; Jiang, Huanfeng;     Show all 8 Authors
Source:
Organic letters 2019 v.21 no.7 pp. 2090-2094
ISSN:
1523-7052
Subject:
alkynes; azides; catalytic activity; chemical reactions; moieties; pyrroles; regioselectivity
Abstract:
... A novel nano copper-catalyzed substrate-dependent chemodivergent transformation of vinyl azides with a terminal alkyne is disclosed. 2,5-Disubstituted pyrroles were selectively obtained in high yield with aryl alkynes and aliphatic alkynes, whereas 2,3,4-trisubstituted pyrroles were formed with silylated alkynes. This switchable method provides a controllable and facile access to both multisubstit ...
DOI:
10.1021/acs.orglett.9b00373

9. Enhanced nitrogen removal in an aerobic granular sequencing batch reactor under low DO concentration: Role of extracellular polymeric substances and microbial community structure

Author:
Yu, Liangbin,   et al.   ; Yan, Lilong; Zhang, Mingyue; Liu, Yue; Liu, Cong; Zhang, Yudan; Liu, Shuang; Hao, Guoxin; Chen, Zhonglin; Zhang, Ying;     Show all 10 Authors
Source:
Bioresource technology 2019 v.289 pp. 121651
ISSN:
0960-8524
Subject:
Enterobacter; Hydrogenophilaceae; Nitrosomonas; Thauera; community structure; denitrification; denitrifying bacteria; dissolved oxygen; microbial communities; nitrogen; polymers; sludge
Abstract:
... In this study, the role of extracellular polymeric substances (EPSs) in nitrogen removal and the microbial community structure of aerobic granular sludge (AGS) were analyzed under different dissolved oxygen (DO) conditions (6–7, 4–5, and 2–3 mg·L−1). The EPSs transported and retained nitrogen in the denitrification process, and the total inorganic nitrogen (TIN) in the EPSs decreased from 6.09 to ...
DOI:
10.1016/j.biortech.2019.121651

10. The LYSIN MOTIF‐CONTAINING RECEPTOR‐LIKE KINASE 1 protein of banana is required for perception of pathogenic and symbiotic signals

Author:
Yuan, Liangbin,   et al.   ; Zhang, Lu; Staehelin, Christian; Li, Yin; Ruan, Jiuxiao; Liang, Zhenwei; Xie, Zhiping; Wang, Wei; Xie, Jianghui; Huang, Shangzhi;     Show all 10 Authors
Source:
Thenew phytologist 2019 v.223 no.3 pp. 1530-1546
ISSN:
0028-646X
Subject:
Arabidopsis thaliana; Fusarium oxysporum f. sp. cubense; Lotus corniculatus var. japonicus; Musa; RNA interference; bananas; chitin; chitooligosaccharides; elicitors; fungi; image analysis; ligands; mycorrhizae; plasma membrane; precipitin tests; protein-serine-threonine kinases; receptors; transgenic plants
Abstract:
... How plants can distinguish pathogenic and symbiotic fungi remains largely unknown. Here, we characterized the role of MaLYK1, a lysin motif receptor kinase of banana. Live cell imaging techniques were used in localization studies. RNA interference (RNAi)‐silenced transgenic banana plants were generated to analyze the biological role of MaLYK1. The MaLYK1 ectodomain, chitin beads, chitooligosacchar ...
DOI:
10.1111/nph.15888

11. LBL deposition of chitosan and silk fibroin on nanofibers for improving physical and biological performance of patches

Author:
Xia, Liangbin,   et al.   ; Long, Youmei; Li, Dan; Huang, Li; Wang, Yanqing; Dai, Fangfang; Tao, Fenghua; Cheng, Yanxiang; Deng, Hongbing;     Show all 9 Authors
Source:
International journal of biological macromolecules 2019 v.130 pp. 348-356
ISSN:
0141-8130
Subject:
Escherichia coli; Staphylococcus aureus; antibacterial properties; biocompatibility; chitosan; coculture; elderly; fibroblasts; fibroins; hydrophilicity; mechanical properties; nanofibers; nylon; patients; silk; surgery; toxicity
Abstract:
... Pelvic floor dysfunction diseases (PFD) become more prevalent with the increase of elderly population, and complications of pelvic floor reconstructive surgery (e.g. infection and exposure of mesh) have been troubling to patients and gynecologists. In this study, the nanofibrous mats were prepared by alternately depositing chitosan (CS) and silk fibroin (SF) on Nylon6 (N6) nanofibrous mats via lay ...
DOI:
10.1016/j.ijbiomac.2019.02.147

12. A facile room temperature solution synthesis of SnO₂ quantum dots for perovskite solar cells

Author:
Xiong, Liangbin,   et al.   ; Liu, Hongri; Chen, Zhiliang; Wang, Haibing; Ye, Feihong; Ma, Junjie; Zheng, Xiaolu; Gui, Pengbin; Wen, Jian; Fang, Guojia;     Show all 10 Authors
Source:
Journal of materials chemistry A 2019 v.7 no.17 pp. 10636-10643
ISSN:
2050-7496
Subject:
ambient temperature; annealing; coatings; electron transfer; quantum dots; solar cells; solvents; tin dioxide
Abstract:
... The electron transport layer (ETL) is a critical component in planar single junction or tandem perovskite solar cells (PSCs), dominating the separation and electron extraction of charge carriers. Herein, we introduce a facile route to synthesize a SnO₂ quantum dot (QD) colloidal solution at room temperature using an alcohol-based solvent with the additive of deionized-water. A superior homogeneous ...
DOI:
10.1039/c8ta12561a

13. An integrated organic–inorganic hole transport layer for efficient and stable perovskite solar cells

Author:
Xiong, Liangbin,   et al.   ; Guo, Yaxiong; Lei, Hongwei; Li, Borui; Fang, Guojia;     Show all 5 Authors
Source:
Journal of materials chemistry 2018 v.6 no.5 pp. 2157-2165
ISSN:
2050-7496
Subject:
air; aromatic amines; copper; cupric oxide; electric potential difference; humidity; hygroscopicity; hysteresis; lithium; polymers; solar cells; solar energy
Abstract:
... Certified power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) have increased to an impressive value of 22.1%. The most efficient perovskite solar cells have the n–i–p device architecture and use 2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD) as the hole transport material (HTM). However, there exists microscopic inhomogeneity that is detrimen ...
DOI:
10.1039/c7ta09946k

14. Ruthenium-Catalyzed C–H Arylation of Diverse Aryl Carboxylic Acids with Aryl and Heteroaryl Halides

Author:
Huang, Liangbin,   et al.   ; Weix, Daniel J.;     Show all 2 Author
Source:
Organic letters 2016 v.18 no.20 pp. 5432-5435
ISSN:
1523-7052
Subject:
Lewis acids; arylation; bromides; carboxylic acids; chemical bonding; chemical structure; iodides; ligands; organic halogen compounds; pyridines; ruthenium
Abstract:
... Ruthenium ligated to tricyclohexylphosphine or di-tert-butylbipyridine catalyzes the arylation of carboxylic acids with diverse aryl halides (iodide, bromide, and triflate; aryl and heteroaryl). In addition, arylations with 2-iodophenol formed benzochromenones, carboxylate was shown to be a stronger donor than an amide, and the arylation of a pyridine carboxylate was demonstrated. Stoichiometric s ...
DOI:
10.1021/acs.orglett.6b02862
PubMed:
27736085
PubMed Central:
PMC5079292

15. Counterion-Induced Nanosheet-to-Nanofilament Transition of Lyotropic Bent-Core Liquid Crystals

Author:
Li, Liangbin,   et al.   ; Wang, Daoliang; Yan, Qi; Zhong, Fei; Li, Yahui; Fu, Ming; Meng, Lingpu; Huang, Youju;     Show all 8 Authors
Source:
Langmuir 2018 v.34 no.43 pp. 13006-13013
ISSN:
1520-5827
Subject:
phase transition; actuators; liquid crystals; optical isomerism; nanosheets; sulfonic acids; protons; photons; metal ions
Abstract:
... The smart flexibility of phase transitions in liquid crystals (LCs) makes them suitable for various applications and is an important research field in contemporary science, engineering, and technology. Unlike most reports focused on bent-core LCs in the thermotropic situation, in our present study, we designed and synthesized a fully rigid bent-core molecule with the sulfonic acid group replacing ...
DOI:
10.1021/acs.langmuir.8b02168

16. From Molecular Entanglement Network to Crystal-Cross-Linked Network and Crystal Scaffold during Film Blowing of Polyethylene: An in Situ Synchrotron Radiation Small- and Wide-Angle X-ray Scattering Study

Author:
Li, Liangbin,   et al.   ; Zhang, Qianlei; Li, Lifu; Su, Fengmei; Ji, Youxin; Ali, Sarmad; Zhao, Haoyuan; Meng, Lingpu;     Show all 8 Authors
Source:
Macromolecules 2018 v.51 no.11 pp. 4350-4362
ISSN:
1520-5835
Subject:
crystal structure; crystallization; crystals; deformation; frost; polyethylene; wide-angle X-ray scattering
Abstract:
... Combining a homemade film blowing machine and an in situ synchrotron radiation source with small- and wide-angle X-ray scattering (SAXS and WAXS) capability, an investigation of film blowing of polyethylene (PE) has been studied. From the die exit to the positions above the frost line, four zones defined with different structural features are observed with SAXS and WAXS measurements. In zone I, pr ...
DOI:
10.1021/acs.macromol.8b00346

17. Stretch-Induced Coil–Helix Transition in Isotactic Polypropylene: A Molecular Dynamics Simulation

Author:
Li, Liangbin,   et al.   ; Xie, Chun; Tang, Xiaoliang; Yang, Junsheng; Xu, Tingyu; Tian, Fucheng;     Show all 6 Authors
Source:
Macromolecules 2018 v.51 no.11 pp. 3994-4002
ISSN:
1520-5835
Subject:
Gibbs free energy; energy; entropy; melting; models; molecular dynamics; polypropylenes; statistics
Abstract:
... The stretch-induced coil–helix transition (CHT) of isotactic polypropylene (iPP) was studied with full-atom molecular dynamics (MD) simulations during the uniaxial stretch process. The results show that imposing stretch induces CHT, which increases both the content and the average length of helices. As strain exceeding a certain value, long helices initially not presented in melt start to emerge, ...
DOI:
10.1021/acs.macromol.8b00325

18. Assessment of the cytotoxicity of ionic liquids on Spodoptera frugiperda 9 (Sf-9) cell lines via in vitro assays

Author:
Zeng, Liangbin,   et al.   ; Wu, Shuanggen; Wang, Chaoyun; Yang, Yuanru; Zhou, Wanlai; Li, Fenfang; Tan, Zhijian;     Show all 7 Authors
Source:
Journal of hazardous materials 2018 v.348 pp. 1-9
ISSN:
0304-3894
Subject:
DNA; DNA fragmentation; Spodoptera frugiperda; acridine orange; agar gel electrophoresis; apoptosis; bromine; cell cycle; cell lines; cytotoxicity; flow cytometry; in vitro studies; insects; ionic liquids; light microscopy; shrinkage; staining; transmission electron microscopes; transmission electron microscopy
Abstract:
... Cytotoxicity studies are important tools for the assessment of the toxicity of ionic liquids (ILs). In the present study, the cytotoxicity of eleven ILs against Spodoptera frugiperda 9 (Sf-9) cell lines were evaluated via 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays. The effect on cellular morphology, ultrastructural morphology, and nuclear morphology induced by 1-ethy ...
DOI:
10.1016/j.jhazmat.2018.01.028

19. Enhanced performance of perovskite solar cells via anti-solvent nonfullerene Lewis base IT-4F induced trap-passivation

Author:
Xiong, Liangbin,   et al.   ; Guo, Yaxiong; Ma, Junjie; Lei, Hongwei; Yao, Fang; Li, Borui; Fang, Guojia;     Show all 7 Authors
Source:
Journal of materials chemistry 2018 v.6 no.14 pp. 5919-5925
ISSN:
2050-7496
Subject:
Lewis bases; chemistry; lead; solar cells
Abstract:
... The defects at the surfaces and grain boundaries of organic–inorganic halide perovskite films are detrimental to both the efficiency and stability of perovskite solar cells. Here, we introduce an in situ method with a new nonfullerene small molecule (IT-4F) that can effectively passivate ionic defects of hybrid perovskites with their positively charged components, under-coordinated Pb²⁺, during th ...
DOI:
10.1039/c8ta00583d

20. Structural Evolution of Hard-Elastic Isotactic Polypropylene Film during Uniaxial Tensile Deformation: The Effect of Temperature

Author:
Li, Liangbin,   et al.   ; Lin, Yuanfei; Li, Xueyu; Meng, Lingpu; Chen, Xiaowei; Lv, Fei; Zhang, Qianlei; Zhang, Rui;     Show all 8 Authors
Source:
Macromolecules 2018 v.51 no.7 pp. 2690-2705
ISSN:
1520-5835
Subject:
crystal structure; crystals; deformation; lithium batteries; mechanical properties; melting; melting point; microporous membranes; polypropylenes; separators; temperature; wide-angle X-ray scattering
Abstract:
... The effects of temperature on the nonlinear mechanical behaviors of hard-elastic isotactic polypropylene films are systematically studied with in-situ ultrafast synchrotron radiation small- and wide-angle X-ray scattering techniques (SAXS/WAXS) during uniaxial tensile deformation at temperatures from 30 to 160 °C. Based on the mechanical behaviors and structural evolutions in strain–temperature tw ...
DOI:
10.1021/acs.macromol.8b00255