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Photochemical graft of γ-cyclodextrin's interior leading to in-situ charge-transfer complexes with unusual regioselectivity and its application in 3D photo-printing

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Science China Chemistry 2022年第6期65卷 1149-1156页

作者： Dongjing Zhang Wenting Liang Jigao Yi jinlei Chen Yongjun lv Ting Zhao Chao Xiao Xiangyu Xie Wanhua Wu Cheng Yang Key Laboratory of Green Chemistry&Technology of Ministry of Education College of ChemistryState Key Laboratory of BiotherapySichuan UniversityChengdu610064China Institute of Environmental Science Department of ChemistryShanxi UniversityTaiyuan030006China Key Laboratory of Environmental Materials&Remediation Technologies of Chongqing College of Chemistry&Environmental EngineeringChongqing University of Arts and SciencesChongqing402160China College of Chemical Engineering Sichuan University of Science&EngineeringZigong643000China

Photoirradiation of anthraquinone(AQ)derivatives withγ-cyclodextrin(γ-CD)in aqueous solution led to aγ-CD derivative with a 9,10-dihydroxylanthracene grafting unprecedentedly at the 5′-position of one glucoside ofγ-CD in high ***,another AQ enters into the remaining space of the 9,10-dihydroxylanthracene-occupiedγ-CD cavity to in-situ form a selfincluded quinhydrone charge transfer(CT)*** structure of the supramolecular CT complex was unambiguously demonstrated by 1 D and 2 D NMR(^(1)H NMR,^(13)C NMR,DEPT,^(1)H-^(1)H COSY,HSQC,HMBC,TOCSY,and ROESY)spectroscopies,which revealed a highly stereoselective stacking of the quinhydrone pairs in theγ-CD *** supramolecular CT complex showed an unusually high binding affinity and improved oxidation *** bearingγ-CD or anthraquinone were respectively synthesized by co-polymerization of acrylamide with the corresponding *** of aqueous mixtures containing these two types of polymers led to gelation,which was applied to 3 D photo-printing of soft materials.

关键词： supramolecular photochemistry cyclodextrin charge-transfer complex anthraquinone photo-printing

Three-dimensional artificial transpiration for efficient solar waste-water treatment

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National Science Review 2018年第1期5卷 70-77页

作者： Xiuqiang Li Renxing Lin George Ni Ning Xu Xiaozhen Hu Bin Zhu Guangxin lv jinlei Li Shining Zhu Jia Zhu National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesSchool of Physics and Collaborative Innovation Center of Advanced MicrostructuresNanjing University Department of Mechanical Engineering Massachusetts Institute of Technology

Solar steam generation is emerging as promising solar-energy conversion technology for potential applications in desalination, sterilization and chemical purification. Despite the recent use of photon management and thermal insulation, achieving optimum solar steam efficiency requires simultaneous minimization of radiation, convection and conduction losses without compromising light *** by the natural transpiration process in plants, here we report a 3 D artificial transpiration device with all three components of heat loss and angular dependence of light absorption minimized, which enables over 85% solar steam efficiency under one sun without external optical or thermal management. It is also demonstrated that this artificial transpiration device can provide a complementary path for waste-water treatment with a minimal carbon footprint, recycling valuable heavy metals and producing purified water directly from waste water contaminated with heavy metal ions.

关键词： graphene solar vapor heatloss waste water heavy-metal ions water purification

Chiroptical switching of molecular universal joint triggered by complexation/release of a cation: A stepwise synergistic complexation

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Chinese Chemical Letters 2023年第2期34卷 179-182页

作者： Fanrui Gao Xingke Yu Ling Liu jinlei Chen Yongjun lv Ting Zhao Jiecheng Ji Jiabin Yao Wanhua Wu Cheng Yang Key Laboratory of Green Chemistry and Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China

Pillar[5]arene-based molecular universal joints(MUJs), bearing fused crown ether subring(MUJ1 and MUJ3) or a ring without ether oxygen atom(MUJ2), were synthesized and enantio–differentiated. Significant chiral inversion was observed for the crown ether-fused MUJs upon the addition of equivalent cations Na+, showing an anisotropy(g) factor of 0.014, while alkyl subring-fused MUJ2 showed no CD inversions. Unprecedentedly, sodium ion triggered rolling-in motion of the subring to the pillar[5]arene cavity was verified, and the synergistic noncovalent interaction of cation-π interactions and C–H···π interactions were responsible for the stabilized self-included conformers. The addition of Me OH or competitive hosts 15-crown-5 ether disassembled the complex of MUJ1 and Na+followed by a rolling-out of the subring, which made the sodium-ion triggered chiroptical switching reversible.

关键词： Molecular universal joint Chiroptical switching Host-guest interaction Pillararene Synergistic complexing

Synthesis,Characterizations,Magnetism and Thermal Degradation of a 2-Fold Interpenetrated 3D Cobalt-Organic Framework

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Chinese Journal of Chemistry 2014年第3期32卷 227-232页

作者： Linyan Yang Liangliang Xin Wen Gu Shengyun Liao Peiyao Du jinlei Tian Yanping Zhang Rui lv Xiaohua Wei Xin Liu Daizheng Liao Department of Chemistry Nankai UniversityTianjin 300071China School of Science Tianjin UniversityTianjin 300072China Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry Tianjin 300071China

A new coordination polymer,[Co_(2)(L)_(2)(4,4'-bipy)]_(n)·3nH_(2)O(1)based on 5-(3-methyl-5-phenyl-4H-1,2,4-tri-azol-4-yl)isophthalic acid(H_(2)L)and 4,4'-bipyridine(4,4'-bipy)has been hydrothermally synthesized and character-ized by single-crystal X-ray diffraction,XRPD,IR,and elemental ***-dependent magnetic sus-ceptibility and thermal degradation for 1 were also *** asymmetric unit of compound 1 consists of two crystallographically independent Co(II)ion,two L^(2−)ligand,one 4,4'-bipy ligand,and three lattice water *** 2D triangle networks were linked by the bridging 4,4'-bipy ligand to give rise to a 2-fold interpenetrated 3D *** simplest cyclic motif of the 2D networks is a triangle ring consisting of three Co(II)cations and three L^(2−)*** we can define Co(II)ions as 4-connected nodes and the L^(2−)ligands as 3-connected ***,the 3D structure can be described as a 2-fold parallel interpenetrated ins InS 3,4-conn topology.

关键词： cobalt-organic framework 2-fold interpenetrated magnetism thermal degradation

稗JS12种群对噁唑酰草胺的抗性水平及机理分析

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农药学学报 2023年第3期25卷 647-656页

作者：杨倩朱锦磊卫甜刘怀阿吕敏江苏里下河地区农业科学研究所江苏扬州225007

稗Echinochloa crus-galli是中国水稻产区发生严重的恶性杂草之一,严重威胁水稻的产量和品质。为明确江苏省稻田稗JS12种群对噁唑酰草胺的抗性水平及抗性机理,本研究采用整株水平测定法测定了稗种群对噁唑酰草胺的敏感性;通过乙酰辅酶A... 详细信息

稗Echinochloa crus-galli是中国水稻产区发生严重的恶性杂草之一,严重威胁水稻的产量和品质。为明确江苏省稻田稗JS12种群对噁唑酰草胺的抗性水平及抗性机理,本研究采用整株水平测定法测定了稗种群对噁唑酰草胺的敏感性;通过乙酰辅酶A羧化酶(acetyl-CoA carboxylase,ACCase)靶标基因测序和表达量测定,以及代谢酶抑制剂增效试验,阐明其产生抗性的靶标抗性机制和非靶标抗性机制;最后测定了稗JS12种群对ACCase抑制剂和其他不同作用机理除草剂的敏感性,以明确抗性种群的交互抗性和多抗性情况。结果表明:江苏省稻区稗JS12种群对噁唑酰草胺产生了13.71倍的高水平抗性;稗JS12种群ACCase基因的6个拷贝序列中均未发生氨基酸突变,药剂处理后其ACCase基因表达量显著低于敏感种群;细胞色素P450抑制剂马拉硫磷和谷胱甘肽-S-转移酶(glutathione-S-transferase,GST)抑制剂NBD-Cl均可显著提高JS12种群对噁唑酰草胺的敏感性,其鲜重抑制中量GR_(50)由227.90 g/hm^(2)分别降至77.51和137.93 g/hm^(2);抗性稗种群JS12对ACCase抑制剂氰氟草酯、精噁唑禾草灵、烯草酮和炔草酯,以及ALS抑制剂五氟磺草胺和激素类除草剂二氯喹啉酸均产生了不同程度的交互抗性和多抗性,但对新型除草剂氯氟吡啶酯和三唑磺草酮仍较为敏感。本研究表明,细胞色素P450和GST介导的代谢增强可能是稗JS12种群对除草剂产生抗性的重要原因,氯氟吡啶酯和三唑磺草酮可以用作治理该抗性种群。

关键词：稗噁唑酰草胺乙酰辅酶A羧化酶代谢抗性多抗性

多花水苋对苄嘧磺隆的抗性水平及靶标抗性机制

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农药学学报 2022年第4期24卷 798-804页

作者：杨倩卫甜朱锦磊刘怀阿吕敏江苏里下河地区农业科学研究所江苏扬州225007

为明确水稻田杂草多花水苋Ammannia multiflora对乙酰乳酸合成酶(ALS)抑制剂类除草剂苄嘧磺隆的抗性水平和抗性分子机制,采用整株水平测定法,测定了采自江苏省扬州市田间的多花水苋疑似抗性种群(YZ-R)对苄嘧磺隆的抗性指数,并分析了YZ-... 详细信息

为明确水稻田杂草多花水苋Ammannia multiflora对乙酰乳酸合成酶(ALS)抑制剂类除草剂苄嘧磺隆的抗性水平和抗性分子机制,采用整株水平测定法,测定了采自江苏省扬州市田间的多花水苋疑似抗性种群(YZ-R)对苄嘧磺隆的抗性指数,并分析了YZ-R种群和相对敏感种群(YZ-S)多花水苋ALS酶对苄嘧磺隆的敏感性差异,同时比较了YZ-R和YZ-S种群ALS基因的核苷酸序列差异。结果表明:YZ-R种群多花水苋对苄嘧磺隆已表现出高水平抗性,其抗性指数(RI)为40.6;苄嘧磺隆对YZ-R种群ALS酶活性的抑制中浓度(I_(50))为0.087μmol/L,对YZ-S种群的I_(50)值为0.0028μmol/L,其抗性指数为31.1。通过PCR扩增获得了多花水苋ALS基因的部分序列,该序列包含了已报道的8个氨基酸突变位点。ALS基因序列比对分析发现,YZ-R种群多花水苋植株ALS基因第197位氨基酸由脯氨酸(CCT)突变为丝氨酸(TCT)。研究表明,ALS基因发生脯氨酸(Pro)-197-丝氨酸(Ser)的突变,导致多花水苋ALS酶对苄嘧磺隆的敏感性下降,是多花水苋YZ-R种群对苄嘧磺隆产生高水平抗性的主要原因。

关键词：多花水苋苄嘧磺隆抗药性靶标抗性乙酰乳酸合成酶基因突变

在高中英语教学中融入中华优秀传统文化的策略研究

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吉林省教育学院学报 2024年第8期40卷 64-70页

作者：吕旺姝高琰邱金磊长春教育学院吉林省实验中学

近年来,随着我国经济的快速发展和多元文化格局的形成,我国的英语教育发生了一系列变革。弘扬中华优秀传统文化,结合中华优秀传统文化进行英语教学,提升学生的认知能力和综合素养也成为了当前英语教学中的重要内容。本文从新时代对英语... 详细信息

近年来,随着我国经济的快速发展和多元文化格局的形成,我国的英语教育发生了一系列变革。弘扬中华优秀传统文化,结合中华优秀传统文化进行英语教学,提升学生的认知能力和综合素养也成为了当前英语教学中的重要内容。本文从新时代对英语教育的需求及英语教育特点等方面探讨了将中华民族文化融入高中英语教学的必要性,同时对实施策略进行研究,探讨了将中华优秀传统文化融入高中英语课堂的相关教学方法、原则,教学载体的使用,有效课堂活动的选取和运用等,以期发展英语教学,提升中华优秀传统文化与高中英语教学融合的有效性,从而培养、塑造学生的三观,提升其批判性思维能力,加强其英语学习能力,提升学生的综合素质。

关键词：中华优秀传统文化高中英语教学文化自信课堂活动

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景洪电站碾压混凝土重力坝强震监测分析

水电能源科学 2014年第10期32卷 70-74页

作者：曹学兴蒋金磊李允鲁郭丽娜吕兴华能澜沧江水电有限公司云南昆明650214 云南工商学院云南昆明651700

为分析景洪电站碾压混凝土重力坝在地震过程中的动力反应情况,对坝体上布置的五台强震仪在缅甸、勐海、景洪三次地震中获得的监测资料进行了时域和频域分析。结果表明,大坝在三次地震过程中加速度峰值较小,最大为37.26cm/s2;坝体顶部在... 详细信息

为分析景洪电站碾压混凝土重力坝在地震过程中的动力反应情况,对坝体上布置的五台强震仪在缅甸、勐海、景洪三次地震中获得的监测资料进行了时域和频域分析。结果表明,大坝在三次地震过程中加速度峰值较小,最大为37.26cm/s2;坝体顶部在地震过程中反应较强烈,其中以最高坝段坝顶地震反应最为强烈;大坝对地震波有明显放大作用,且远震对大坝的影响比同等加速度峰值条件下的近震更为不利;三次地震坝址区地震烈度都不超过5度,而景洪电站大坝抗震设防烈度为8度,故地震未对大坝产生明显不利影响。

关键词：景洪电站碾压混凝土重力坝强震仪加速度动力反应

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不同切口复位固定治疗复杂胫骨平台骨折

长春中医药大学学报 2024年第8期40卷 911-914页

作者：吕飞飞龚立成金磊合肥市第一人民医院南区滨湖院区急诊创伤骨科合肥230092

目的探究不同切口复位固定治疗复杂胫骨平台骨折的临床疗效。方法选择复杂胫骨平台骨折患者100例,采用随机数表法分为观察组与对照组,各50例。对照组给予内外侧切口双钢板固定治疗,观察组给予后内侧倒“L”切口辅助外侧切口复位固定治... 详细信息

目的探究不同切口复位固定治疗复杂胫骨平台骨折的临床疗效。方法选择复杂胫骨平台骨折患者100例,采用随机数表法分为观察组与对照组,各50例。对照组给予内外侧切口双钢板固定治疗,观察组给予后内侧倒“L”切口辅助外侧切口复位固定治疗。比较2组临床疗效、手术指标、膝关节功能评分(Rasmussen胫骨骨折膝关节功能评分)、疼痛程度评分(VAS)及手术并发症发生情况。结果治疗后,观察组术后3个月后总有效率(70.00%,35/50)显著高于对照组(38.00%,19/50)(P0.05);观察组术后3个月、6个月后Rasmussen胫骨骨折膝关节功能评分高于对照组(P0.05)。结论后内侧倒“L”切口辅助外侧切口复位固复杂胫骨平台骨折更充分、牢固,能够早期行膝关节的功能锻炼,恢复膝关节功能,提高患者生活质量。

关键词：复杂胫骨平台骨折手术切口内固定