检索结果-南通市图书馆

Highly efficient and multidimensional extraction of targets from complex matrices using aptamer-driven recognition

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Nano Research 2017年第1期10卷 145-156页

作者： Jie Wang Haijing Shen Chi Huang qinqin ma Yaning Tan Fenglei Jiang Chao ma Quan Yuan Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China

Adsorbents are widely employed in both fundamental and applied research areas such as separation technology, biotechnology, and environmental science. Selectivity and reusability are two most important requirements for adsorbents. Aptamers exhibit perfect selectivity and easy regeneration, which make them uniquely effective adsorption materials. Herein, we have rationally designed novel aptamer-based adsorbents and investigated their performance in extraction/ separation of targets from an aqueous solution. These adsorbents can selectively extract targets from complicated sample matrices containing background compounds. Moreover, they can also be easily recycled without a significant loss of adsorption capacity. Notably, the adsorbents did not affect the activity of isolated biological samples, revealing their potential for the purification/separation of biomolecules. Composite adsorbents were constructed using aptamer-based adsorbents and a porous polymer, displaying highly efficient target separation from aqueous solution. Finally, separation columns were constructed, and targets in the aqueous solution were efficiently separated by these columns. The aptamerbased adsorbents described here exhibit great promise for potential applications in separation technology, biotechnology, and environment-related areas.

关键词： aptamer adsorbent selectivity separation extraction

Recent progress in engineering near-infrared persistent luminescence nanoprobes for time-resolved biosensing/bioimaging

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Nano Research 2019年第6期12卷 1279-1292页

作者： Ling Liang Na Chen Yiyi Jia qinqin ma Jie Wang Quan Yuan Weihong Tan Molecular Science and Biomedicine Laboratory Institute of Chemical Biology and NanomedicineCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Key Laboratory of Analytical Chemistry for Biology and Medicine(Ministry of Education) College of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China

Persistent luminescence nanoprobes (PLNPs) can remain luminescent after ceasing *** to the ultra-long decay time of persistent luminescence (PersL),autofluorescence interference can be efficiently eliminated by collecting PersL signal after autofluorescence decays completely,thus the imaging contrast and sensing sensitivity can be significantly *** near-infrared (NIR) light shows reduced scattering and absorption coefficient in penetrating biological organs or tissues,near-infrared persistent luminescence nanoprobes (NIR PLNPs) possess deep tissue penetration and offer a bright prospect in the areas of in vivo biosensing/*** this review,we firstly summarize the design of different types of NIR PLNPs for biosensing/bioimaging,such as transition metal ions-doped NIR PLNPs,lanthanide ions-doped NIR PLNPs,organic molecules-based NIR PLNPs,and semiconducting polymer self-assembled NIR ***,organic molecules-based NIR PLNPs and semiconductor self-assembled NIR PLNPs,for the first time,were introduced to the review of ***,the effects of different types of charge carriers on NIR PersL and luminescence decay of NIR PLNPs are significantly emphasized so as to build up an in-depth understanding of their luminescence *** includes the regulation of valence band and conduction band of different host materials,alteration of defect types,depth and concentration changes caused by ion doping,effective radiation transitions and energy transfer generated by different luminescence *** the design and potential of NIR PLNPs as long-lived luminescent materials,the current challenges and future perspective in this rapidly growing field are also discussed.

关键词： near-infrared persistent luminescence nanoprobes biosensing bioimaging

Controlling disorder in host lattice by hetero-valence ion doping to manipulate luminescence in spinel solid solution phosphors

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Science China Chemistry 2018年第12期61卷 1624-1629页

作者： qinqin ma Jie Wang Wei Zheng Qian Wang Zhiheng Li Hengjiang Cong Huijun Liu Xueyuan Chen Quan Yuan Key Laboratory of Analytical Chemistry for Biology and Medicine(Ministry of Education) College of Chemistry and Molecular SciencesWuhan University CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Key Laboratory of Artificial Micro-and Nano-Structures of Ministry of Education and School of Physics and Technology Wuhan University

Phosphor materials have been rapidly developed in the past decades. Developing phosphors with desired properties including strong luminescence intensity and long lifetime has attracted widespread attention. Herein, we show that hetero-valence ion doping can serve as a potent strategy to manipulate luminescence in persistent phosphors by controlling disorder in the host lattice. Specifically, spinel phosphor Zn(Ga_(1-x)Zn_x)(Ga_(1-x)Ge_x)O_4:Cr is developed by doping ZnGa_2O_4:Cr with tetravalent Ge^(^(4+)).Compared to the original ZnGa_2O_4:Cr, the doped Zn(Ga_(1-x)Zn_x)(Ga_(1-x)Ge_x)O_4:Cr possesses significantly enhanced persistent luminescence intensity and prolonged decay time. Rietveld refinements show that Ge^(4+)enters into octahedral sites to substitute Ga^(3+), which leads to the co-substitution of Ga^(3+) by Zn^(2+) for charge compensation. The hetero-valence substitution of Ga^(3+) by Ge^(4+)and Zn^(2+) enriches the charged defects in Zn(Ga_(1-x)Zn_x)(Ga_(1-x)Ge_x)O_4:Cr, making it possible to trap large amounts of charge carriers within the defects during excitation. Electron paramagnetic resonance measurement further confirms that the amount of Cr^(3+) neighboring charged defects increases with Ge^(4+)doping. Thus charge carriers released from defects can readily combine with the neighboring Cr^(3+) to produce bright persistent luminescence after excitation ceases. The hetero-valence ion doping strategy can further be employed to develop many other phosphors and contributes to lighting, photocatalysis and bioimaging.

关键词： persistent luminescence nanoparticle defect doping

Background-free latent fingerprint imaging based on nanocrystals with long-lived luminescence and pH-guided recognition

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Nano Research 2018年第12期11卷 6167-6176页

作者： Zhiheng Li Qian Wang Yingqian Wang qinqin ma Jie Wang Zhihao Li Yingxue Li Xiaobo Lv Wei Wei Lang Chen Quan Yuan Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) College of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy ofSciencesBeijing 10090China School of Basic Medical Sciences Wuhan UniversityWuhan 430072China

Latent fingerprints (LFPs) are highly specific to individuals, and LFP imaging has played an important role in areas such as forensic investigation and law enforcement. Presently, LFP imaging still faces considerable problems, including background interference and destructive and complex operations. Herein, we have designed a background-free, nondestructive, and easy-to-perform method for LFP imaging based on pH-mediated recognition of LFPs by carboxyl group-functionalized Zn2GeO4:Mn (ZGO:Mn-COOH) persistent luminescence nanorods (PLNRs). By simply adjusting the pH of the ZGO:Mn-COOH colloid dispersion to a certain acidic range, the negatively charged ZGO:Mn-COOH readily binds to protonated fingerprint ridges via electrostatic attraction. The ZGO:Mn-COOH colloid dispersion can be stored in portable commercial spray bottles, and the LFPs have been easily detected in situ by simply dropping the colloid dispersion on the LFPs. Moreover, since the ZGO:Mn-COOH can remain luminescent after excitation ceases, background color and background fluorescence interference were efficiently removed by simply capturing the luminescent LFP images after the excitation ceased. The entire LFP imaging process can be easily conducted without any destructive or complex operations. Due to the great versatility of the developed method for LFP imaging, clear LFP images with well-resolved ridge patterns were obtained. The designed background-free, nondestructive, and easy-to-perform LFP imaging strategy has great potential for future applications, such as forensic investigations and law enforcement.

关键词： fingerprint persistent luminescence background interference nanoparticle imaging

新女性的“对照镜”——从胡缨《翻译的传说:中国新女性的形成(1898—1918)》谈起

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文艺研究 2023年第2期 148-160页

作者：马勤勤中国社会科学院文学研究所

胡缨《翻译的传说:中国新女性的形成(1898—1918)》将过去有关新女性的本体研究,引向了形象生成的研究,同时试图以“翻译”为对话桥梁,站在跨中西文化、跨历史文化、跨性别文化的三重坐标轴中,揭示西方女性之于中国新女性生成的“在场... 详细信息

胡缨《翻译的传说:中国新女性的形成(1898—1918)》将过去有关新女性的本体研究,引向了形象生成的研究,同时试图以“翻译”为对话桥梁,站在跨中西文化、跨历史文化、跨性别文化的三重坐标轴中,揭示西方女性之于中国新女性生成的“在场”与“催化”作用。但是,由于作者在中/西、男/女的双重“对照镜”中择取的资源并不平衡,遂导致新女性形象生成的一些重要面向模糊缺失。该书提示了新女性课题的未完成状态和开放式构架,可以激活这一领域的研究。

关键词：本体研究西方女性新女性形象中西文化跨性别开放式

从“兴女学”到马克思主义妇女观——黄璧魂与中国近代妇女运动考论

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探索与争鸣 2023年第10期 165-176,180页

作者：马勤勤中国社会科学院文学研究所北京100732

在中国妇女运动史上,黄璧魂是一个不应被遗忘的名字。她虽然出身传统,自幼缠足,接受旧式的家塾教育,但却在近代中国风云变幻的时代氛围中始终与时俱进,以开放的怀抱去接受各种与传统相异的新学说,致力于拯救以妇女为代表的弱势群体。当... 详细信息

在中国妇女运动史上,黄璧魂是一个不应被遗忘的名字。她虽然出身传统,自幼缠足,接受旧式的家塾教育,但却在近代中国风云变幻的时代氛围中始终与时俱进,以开放的怀抱去接受各种与传统相异的新学说,致力于拯救以妇女为代表的弱势群体。当清末风气未开之时,黄璧魂出走封建家庭,兴办书社和家庭教育女学堂,宣传自由与女权学说,为广东女学先进。五四之后,她转而接受马克思主义,先后突破性别窒碍与国族藩篱,将中国妇女的解放纳入全世界无产阶级解放的视域中通盘考量,身先士卒地参与并组织妇女运动与工人运动。黄璧魂是目前已知的唯一一位完整参与了晚清、民初至五四三个阶段妇女解放思潮的女性。她的重新发现,是中国妇女史和革命史研究的重要创获。

关键词：黄璧魂妇女解放兴女学马克思主义妇女观

作为方法的“女性小说”——关于近代中国女性小说研究的反思与进路

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文艺研究 2020年第3期 64-75页

作者：马勤勤中国社会科学院文学研究所

在对近代中国女性小说的相关研究进行详细梳理之后,可以提出新的反思与两条进路。首先是关于近代小说女作者的判定,要严格区分两种截然不同的"女性小说",即从外部观照、作为文学现象的兴起意义上的"女性小说"与从内部着眼、作为女性性... 详细信息

在对近代中国女性小说的相关研究进行详细梳理之后,可以提出新的反思与两条进路。首先是关于近代小说女作者的判定,要严格区分两种截然不同的"女性小说",即从外部观照、作为文学现象的兴起意义上的"女性小说"与从内部着眼、作为女性性别主体书写的"女性小说",不能盲目追求数量之多。其次,由于这一问题的特殊性,应该跳出传统作家作品论的研究范式,一方面可以从"发生学"的角度观照女性写作小说这一特殊的文学/性别现象;另一方面,也可以从"性别"与"文类"的关系角度切入,对已经固化了的"女性文学"构造有所补益。

关键词：女性小说近代小说女性写作女性文学性别主体盲目追求文学现象发生学

都市、共和与日常——评陈建华对周瘦鹃与民国上海文学文化的想象重构

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现代中文学刊 2020年第3期 96-101页

作者：马勤勤中国社会科学院文学研究所

陈建华在《紫罗兰的魅影:周瘦鹃与上海文学文化,1911-1949》(下文简称《紫罗兰的魅影》)一书中,从近代著名通俗小说家、报人、翻译家、出版家和电影评论家周瘦鹃一生的艺文生涯和情感经历入手,通过印刷媒介、商品美学、女性想象、电影... 详细信息

陈建华在《紫罗兰的魅影:周瘦鹃与上海文学文化,1911-1949》(下文简称《紫罗兰的魅影》)一书中,从近代著名通俗小说家、报人、翻译家、出版家和电影评论家周瘦鹃一生的艺文生涯和情感经历入手,通过印刷媒介、商品美学、女性想象、电影文化、新旧之争等多个维度,翻转出了一部以民国上海为中心的都市文学与文化的“万花筒”。在自序中,作者回忆20多年前在哈佛燕京图书馆与周瘦鹃的“邂逅”,以及其后围绕这一议题的深邃思考和反复推敲--“无论是革命话语、茅盾、报刊、电影,多少都和周瘦鹃有关,心里总装着一个‘文化’整体,总在琢磨‘民国’的历史是怎么回事”。1无疑,《紫罗兰的魅影》是陈建华潜心多年的重磅力作,他念兹在兹的“文化整体”与“民国历史”,集中体现了他以跨学科方法和文化研究理论对以周瘦鹃为代表的“江南文人”群体的文化实践和民国上海都市文学的执着探索。从这个意义上讲,《紫罗兰的魅影》的学术意义绝不止于对某一作家的个案研究,而是暗含了陈建华以周瘦鹃为切入口,来重绘中国现代文学与文化地图的野心。

关键词：都市文学女性想象革命话语周瘦鹃民国上海哈佛燕京图书馆跨学科方法印刷媒介

近代女性小说的"空白之页"——从"黄翠凝"与"黄璧魂"在文学史与妇女史中的裂变谈起

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清华大学学报（哲学社会科学版） 2023年第4期38卷 84-96,222页

作者：马勤勤中国社会科学院文学研究所北京100732

文学史上著名的近代女作家"黄翠凝",与妇女史中的妇女运动先驱"黄璧魂",实则为同一人。合而观之,可知她完整参与了从晚清基于西方资产阶级"天赋人权"观念的女权学说,到五四以科学社会主义作为妇女运动理论武器的转变历程,为妇女史研究... 详细信息

文学史上著名的近代女作家"黄翠凝",与妇女史中的妇女运动先驱"黄璧魂",实则为同一人。合而观之,可知她完整参与了从晚清基于西方资产阶级"天赋人权"观念的女权学说,到五四以科学社会主义作为妇女运动理论武器的转变历程,为妇女史研究提供了一个稀有样本。与此同时,她也是目前已知的唯一一位在创作上横跨晚清、民初和五四的女小说家。她的小说不仅折射了近代中国女权思想的嬗变,在形式上也求新求变,其对白话语体和限制性叙事视角的娴熟操控,细腻的心理描写和"自叙传"的写作倾向,乃至"对话体"小说的先锋实验,堪称具有现代意义的小说先声之一。"黄璧魂"与"黄翠凝"的合一,补全了近代女性小说的"空白之页",是文学史与妇女史两大研究领域的重要创获。

关键词：黄翠凝黄璧魂女权女小说家清末民初五四