检索结果-南通市图书馆

Ultrafast photoexcitation dynamics behavior of hydrogen-bonded polyfluorenol

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第1期35卷 486-491页

作者： Man Xu Chuanxin Wei Yunlong Zhang Hao Li Jingyao Ma jinyi lin Shengjie Wang Wei Xue Qi Wei linghai Xie Wei Huang State Key Laboratory of Organic Electronics and Information Displays&School of Chemistry and Life Sciences&Institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816China Frontiers Science Center for Flexible Electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)&Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical UniversityXi’an 710072China

Exciton behavior is crucial to the exploitation of light-emitting conjugated polymer(LCPs)for optoelectronic *** excitons are easily trapped by the intrinsically defect ***,we set a polyfluorenol(PPFOH)as an example to systematically investigate its photophysical behavior to check the role of defect structures in *** to time-resolved photoluminescence analysis,the feature emission peaks from individual chain of PPFOH in diluted DMF solution is effectively avoided the influence of fluorenone formation,but the residual green-band emission at 550nm is easily observed in the PL spectra of PPFOH dilute toluene solution obtained delay 1.5 ns,confirmed the formation of“guest”physical aggregation-induced defect ***,efficient and ultrafast energy transfer from individual chain to defect structure is observed in PPFOH ***,the efficient energy transfer happened for the film obtained from DMF solution(200 ps)than those of toluene ones(600 ps).Meanwhile,compared to relatively stable green-band emission in PPFOH film from toluene solution,red-shifted emission peak(11 nm)of PPFOH film from DMF solutions exposed to saturated DNT vapor also confirmed their different aggregation-induced green-band ***,this aggregation defect structures are influenced on the photophysical property of LCPs in solid states.

关键词： Photoexcitation dynamics Polyfluorenol Aggregation behavior Energy transfer Exciton migration

托法替布治疗激素抵抗型免疫检查点抑制剂相关心肌炎的临床研究

在线全文

学校读者我要写书评

暂无评论

中国癌症杂志 2024年第4期34卷 400-408页

作者：许宇辰张健王妍林瑾仪周宇红程蕾蕾葛均波复旦大学附属中山医院心血管内科上海200032 上海市心血管病研究所上海200032 复旦大学附属中山医院肿瘤内科上海200032 复旦大学附属中山医院心脏超声诊断科上海200032 上海市影像医学研究所上海200032

背景与目的:激素抵抗型免疫检查点抑制剂相关心肌炎(steroid-resistant immune checkpoint inhibitor-associated myocarditis,srICIAM)是一种在接受免疫治疗后出现的心脏相关不良反应,患者总体预后较差。既往研究显示,包含Janus激酶(Ja... 详细信息

背景与目的:激素抵抗型免疫检查点抑制剂相关心肌炎(steroid-resistant immune checkpoint inhibitor-associated myocarditis,srICIAM)是一种在接受免疫治疗后出现的心脏相关不良反应,患者总体预后较差。既往研究显示,包含Janus激酶(Janus kinase,JAK)抑制剂托法替布在内的免疫强化抑制治疗可能对srICIAM具有一定疗效。然而,由于缺乏足够的临床数据,其治疗效果及对于肿瘤病情的影响尚不明确。本研究旨在探讨托法替布对srICIAM的治疗效果。方法:本项回顾性病例对照研究连续纳入了2019年7月—2022年5月在复旦大学附属中山医院接受免疫检查点抑制剂治疗且出现srICIAM的36例恶性肿瘤患者。接受糖皮质激素联合托法替布治疗的患者被分配至托法替布组(n=19),未使用托法替布治疗的患者被分配至对照组(n=17)。比较两组患者在临床特征、检验指标、影像学检查结果等方面的数据。同时对这些患者进行随访以监测心血管终点事件的发生。研究方案经过复旦大学附属中山医院伦理委员会批准(批准号:B2021-275R)。本研究按照《赫尔辛基宣言》的伦理学规范进行。结果:与对照组相比,在糖皮质激素累积剂量及持续时间差异无统计学意义(P>0.05)的情况下,托法替布组的心肌炎恢复时间更短(中位恢复时间:86.5 d vs 126.5 d,P=0.021)。托法替布组的心肌炎相关死亡率显著低于对照组(5%vs 35%,P=0.025)。结论:托法替布可在一定程度上降低srICIAM患者的死亡率并缩短康复时间,同时对于肿瘤患者的预后未产生不良影响。其可能成为srICIAM的潜在治疗药物之一。

关键词：免疫检查点抑制剂免疫疗法心肌炎 Janus激酶抑制剂

Intrinsically stretchable conjugated polymers for flexible optoelectronic devices

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2021年第21期66卷 2162-2164,M0003页

作者： Lubing Bai Yamin Han jinyi lin linghai Xie Wei Huang Frontiers Science Center for Flexible Electronics MIIT Key Laboratory of Flexible ElectronicsNorthwestern Polyteclmical UniversityXi'an 710072China Key Laboratory of Flexible Electronics and Institute of Advanced Materials Nanjing Tech UniversityNanjing 211816China State Key Laboratory of Organic Electronics and Information Displays&1 Institute of Advanced Materials Nanjing University of Posts and TelecommunicationsNanjing 210023China

Conjugated Polymers(CPs)have been extensively explored in academia and industry since the discovery of conducting polymers in 1977[1],owing to their solution processability,structural tunability,and potential applications in a wide variety of optoelectronic devices,such as organic light-emitting diodes(OLED),organic photovoltatics(OPV)and organic field-effect transistors(OFET).

关键词：光电子器件共轭聚合物 OLED

Fluorene pendant-functionalization of poly(N-vinylcarbazole)as deep-blue fluorescent and host materials for polymer light-emitting diodes

在线全文

学校读者我要写书评

暂无评论

中国化学快报:英文版 2023年第8期34卷 484-489页

作者： Ning Sun Qin Zou Wenyu Chen Yingying Zheng Kai Sun Chunbin Li Yamin Han Lubing Bai Chuanxin Wei jinyi lin Chengrong Yin Jianguo Wang Wei Huang Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816China College of Chemistry and Chemical Engineering Inner Mongolia Key Laboratory of Fine Organic SynthesisInner Mongolia UniversityHohhot 010021China Centre for Molecular Systems and Organic Devices(CMSOD) Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials(IAM)Nanjing University of Posts and TelecommunicationsNanjing 210023China Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)Xi’an 710072China

π-Electron coupling of pendant conjugated segment inπ-stacked semiconducting polymers always causes the formation of defect trapped sites and further quenched high-band excitons,which is harmful to the performance and stability of deep-blue polymer light-emitting diodes(PLEDs).Herein,considerate of“defect”carbazole(Cz)electromers in poly(N-vinylcarbazole)(PVK),a series of fluorene units are introduced into pendant segments(PVCz-DMeF,PVCz-FMeNPh and PVCz-DFMeNPh)to suppress the strongπ-electron coupling of pendant Cz units and enhance radiative transition toward fabricating sable *** to PVCz-FMeNPh and PVCz-DFMeNPh,PVCz-DMeF spin-coated films show a relatively efficient deep-blue emission,completely similar to its single pendant chromophore,confirmed an extremely weak charge-transfer and electron coupling between adjacent pendant ***,PLEDs based on PVCz-DMeF present stable and deep-blue emission with a high color purity(0.17,0.08),associated with extremely weak defect emission at 600∼700nm(induced by carbazole electromers).Finally,PLEDs based on PVCz-DMeF/F8BT blended films(1:1)also present the high maximum luminance(Lmax)of 6261 cd/m2 and current efficiency(CE_(max))of 2.03 cd/A,confirmed slightly trapped sites ***,precisely control the arrangement and packing model of pendant units inπ-stacked polymer is an essential prerequisite for building efficient and stable emitter for optoelectronic devices.

关键词： Poly(N-vinylcarbazole) Fluorene Deep-blue emission Energy transfer Polymer light-emitting diodes

Lactonization of dyes promoted by a coordination cage facilitates cavity-induced chromism as ion mobile detector

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第5期67卷 1554-1560页

作者： Liangliang Zhang Yu Liang Zhifeng Xiao Yuxuan Meng jinyi Huang Xi lin Ji Li Hong-Cai Zhou Yu Fang Strait Institute of Flexible Electronics(SIFE Future Technologies)Fujian Normal University and Strait Laboratory of Flexible Electronics(SLoFE)Fuzhou 350017China State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Department of Chemistry Texas A&M UniversityCollege StationTexas 77842-3012USA State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Frontiers Science Center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UniversityXi’an 710072China

Dye molecules often change colors(so-called “chromism”) according to the environment variation. However, they are rarely induced by a catalytic amount of cavity. Through encapsulation in the cavity of a porous coordination cage(PCC-2), Rhodamine B(1) is transformed from red quinonoid form(1q) into colorless lactone form(1l) in aprotic polar solutions. The μ4-OH groups in the cavity of PCC-2 are shown to stabilize the uncommon zwitterion intermediate(1z), followed by converting to 1l, thus accelerating the equilibrium. The chromism is catalyzed by 0.25 mol% of PCC-2, and the reaction rate is improved by 80,400times. 1@PCC-2 can be further fabricated to a sol-gel that exhibits ion recognition properties. The resulting encapsulation and stabilization of an unconventional intermediate by a catalytic amount of the coordination cage provides fundamental insights into molecular isomerization and has potential use in chemical sensing.

关键词： porous coordination cage Zwitterion intermediate cavity Rhodamine B chromism

Recent progress on electro-sorption technology for lithium recovery from aqueous sources

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2563-2573页

作者： Qichen Lu Peng Liu Tianyi Zhou Ruling Huang Kexin Zhang lin Hu Rong Liu Zhibo Ren jinyi Wang Xiaolong Wang Huaneng Clean Energy Research Institute Beijing 102209China

Lithium is known as the“white petroleum”of the electrification era,and the global demand for lithium grows rapidly with the quick development of new energy *** aqueous solutions,such as salt lake brine,underground brine,and seawater,have large lithium reserves,thus this kind of lithium resource has become a research hotspot *** with other lithium extraction technologies,electro-sorption method shows good prospects for practical applications with advantages in the aspects of efficiency,recovery ratio,cost,and ***,this review covers recent progress on electro-sorption technology for lithium recovery from aqueous solutions,including the concept illustration,research progress of the applied working electrodes and counter electrodes,and the evaluation indicators of electro-sorption ***,some prospects for the development of this technology are also *** hope this review is beneficial for the construction of high-efficient electrochemical lithium recovery system to achieve an adequate lithium supply in the future.

关键词： lithium extraction electro-sorption technology lithium selective electrode counter electrode system evaluation method

Universal 4-qualifiable fluorene-based building blocks for potential optoelectronic applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第12期33卷 5137-5141页

作者： Xiang An Jinghao Yang Man Xu Lili Sun Lubing Bai Kai Wang Zhiqiang Zhuo Yingying Zheng jinyi lin Xuehua Ding Yuyu Liu linghai Xie Chengrong Yin Wei Huang Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China Frontiers Science Center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UniversityXi'an 710072China Electrical Engineering College Nanjing Vocational University of Industry TechnologyNanjing 210023China

In the design of conjugated molecules,modular production enables materials to easily realize structure modification and precisely tune their photoelectrical *** of a novel and universal building block is crucial to design and manufacture high performance and stable conjugated molecules for optoelectronic ***,we originally demonstrated a universal 4-qualifiable fluorene-based building block,which is a fundamental molecular segment to functionalize and obtain novel conjugated *** to the traditional modification at 9-site,additional 4-position functionalization provided an exciting blueprint to not only tune electronic structure and excited state via p-n molecular design engineering and space charge-transfer strategy,but also allow for optimizing intermolecular arrangement and obtaining solution-processing *** introduction of the 4-site substituent in fluorene based semiconductors may endow materials with unique ***,we successfully prepared two stable deep-blue light-emitting conjugated polymer,PODOPF and PODOF,by utilizing the 4-substituent fluorene based building *** is believable that the performance,stability and processibility of reported outstanding fluorene-based conjugated molecules can be further optimized based on this universal building block.

关键词： Side-chain coupling Small molecular emitter Morphological stability Deep-blue emission Optoelectronic device

Unveiling the Effects of Interchain Hydrogen Bonds on Solution Gelation and Mechanical Properties of Diarylfluorene-Based Semiconductor Polymers

在线全文

学校读者我要写书评

暂无评论

Research 2020年第1期2020卷 547-561页

作者： Lubing Bai Yamin Han Chen Sun Xiang An Chuanxin Wei Wei Liu Man Xu Lili Sun Ning Sun Mengna Yu He Zhang Qi Wei Chunxiang Xu Yingguo Yang Tianshi Qin linghai Xie jinyi lin Wei Huang Center for Supramolecular Optoelectronics(CSO) Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)30 South Puzhu RoadNanjing 211816China State Key Laboratory of Bioelectronics School of Electronic Science and Medical EngineeringSoutheast UniversityNanjing 210096China Center for Molecular Systems and Organic Devices(CMSOD) Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials(IAM)Nanjing University of Posts&Telecommunications9 Wenyuan RoadNanjing 210023China Frontiers Science Center for Flexible Electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)127 West Youyi RoadXi’an 710072China Shanghai Synchrotron Radiation Facility(SSRF) Zhangjiang LabShanghai Advanced Research InstituteChinese Academy of Sciences239 Zhangheng RoadShanghai 201204China

The intrinsically rigid and limited strain of most conjugated polymers has encouraged us to optimize the extensible properties of conjugated ***,learning from the hydrogen bonds in glucose,which were facilitated to the toughness enhancement of cellulose,we introduced interchain hydrogen bonds to polydiarylfluorene by amide-containing side *** tuning the copolymerization ratio,we systematically investigated their influence on the hierarchical condensed structures,rheology behavior,tensile performances,and optoelectronic properties of conjugated *** to the reference copolymers with a low ratio of amide units,copolymers with 30%and 40%amide units present a feature of the shearthinning process that resembled the non-Newtonian fluid,which was enabled by the interchain dynamic hydrogen ***,we developed a practical and universal method for measuring the intrinsic mechanical properties of conjugated *** demonstrated the significant impact of hydrogen bonds in solution gelation,material crystallization,and thin film ***,the breaking elongation for P4 was even up to~30%,which confirmed the partially enhanced film ductility and toughness due to the increased amide ***,polymer light-emitting devices(PLEDs)based on these copolymers presented comparable performances and stable electroluminescence(EL).Thin films of these copolymers also exhibited random laser emission with the threshold as low as 0.52μJ/cm^(2),suggesting the wide prospective application in the field of flexible optoelectronic devices.

关键词： bonds conjugated film

Enhancement of morphological and emission stability of deep-blue small molecular emitter via a universal side-chain coupling strategy for optoelectronic device

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第2期33卷 835-841页

作者： Ning Sun Han Gao Lili Sun Jingxi An Man Xu Chen Sun Yamin Han jinyi lin Jiangli Cai Mingjian Ni Liangliang He Jinghao Yang Zhoulu Wang Lubing Bai Xinwen Zhang Qi Wei Xuehua Ding Chengrong Yin linghai Xie Wei Huang Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 210000China State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials(IAM) Nanjing University of Posts and TelecommunicationsNanjing 210023China Frontiers Science Center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UniversityXi’an 710072China

Film morphology of emissive layers is crucial to the performance and stability of solution-processable organic light-emitting diodes(OLEDs). Compared to the interpenetration of conjugated polymer chain,small molecular emitter with a flexible side chain always presents easily aggregation upon external treatment, and caused π-electronic coupling, which is undesirable for the efficiency and stability of deep-blue OLEDs. Herein, we proposed a side-chain coupling strategy to enhance the film morphological an emission stability of solution-processable small molecular deep-blue emitter. In contrary to “parent” MC8 TPA,the crosslinkable styryl and vinyl units were introduced as ended unit at the side-chain of Cm TPA and OEYTPA. Interestingly, Cm TPA and OEYTPA films present a relatively stable morphology and uniform deep-blue emission after thermal annealing(160 ℃) in the atmosphere, different to the discontinuous MC8 TPA annealed film. Besides, compared to the Cm TPA and OEYTPA ones, serious polaron formation in the MC8 TPA annealed film also negative to the deep-blue emission, according to transient absorption analysis. Therefore, both Cm TPA and OEYTPA annealed film obtained at 140 ℃ present an excellent deep-blue ASE behavior with a 445 nm, but absence for MC8 TPA ones, associated with the disruption of annealed films. Finally, enhancement of device performance based on Cm TPA and OEYTPA film(~40%)after thermal annealing with a similar performance curves also confirmed the assumption above. Therefore, these results also supported the effectiveness of our side-chain coupling strategy for optoelectronic applications.

关键词： Side-chain coupling Small molecular emitter Morphological stability Deep-blue emission Optoelectronic device