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Journal of Materials Science & Technology 2023年第3期134卷 189-196页

作者： Zhe Hu Hanxu Lu Wenjie Zhou Jinxin Wei Hanqing Dai b Hong Liu Zhiyong Xiong Fengxian Xie Wanlu Zhang ruiqian guo Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Lighting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Zhongshan-Fudan Joint Innovation Center Zhongshan 528437China Yiwu Research Institute of Fudan University Yiwu 322000China

Over the past few decades,I-III-VI quantum dots(QDs)have attracted considerable attention due to their large Stokes shifts,good eco-friendliness,and wide tunable *** this work,a facile microwave-assisted aqueous route using glutathione(GSH)and citric acid(CA)as dual stabilizers is introduced to synthesize AgInGaS/ZnS(AIGS/ZnS)core/shell *** exceptional photoluminescence quantum yield(PL QY)as high as 79%is successfully achieved,boosting the best performance of water-dispersible AIGS *** varying the Ag/Ga ratio,the PL peak wavelength can be tuned from 547 to 616 nm,and luminescent hydrogel films with different colors are obtained by embedding AIGS/ZnS QDs in polyacrylamide/poly-vinyl alcohol(PAAm/PVA)*** white light-emitting diode(WLED)with a high color rendering index(CRI)of 92.1(R_(9)=92.0)and a correlated color temperature(CCT)of 3022 K is fabricated using QDs-PAAm/PVA hydrogel films in combination with a blue InGaN LED chip,indicating that the as-prepared QDs are competitive color-conversion materials for WLEDs.

关键词： AgInGaS/ZnS Aqueous synthesis Quantum dots White LEDs

AgInS_(2)/ZnS quantum dots for noninvasive cervical cancer screening with intracellular pH sensing using fluorescence lifetime imaging microscopy

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Nano Research 2022年第6期15卷 5193-5204页

作者： Wenhua Su Dan Yang Yulan Wang Yawei Kong Wanlu Zhang Jing Wang Yiyan Fei ruiqian guo Jiong Ma Lan Mi Department of Optical Science and Engineering Shanghai Engineering Research Center of Ultra-precision Optical ManufacturingKey Laboratory of Micro and Nano Photonic Structures(Ministry of Education)School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Department of Gynecology and Obstetrics The Central Hospital of WuhanTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430014China Institute of Photonic Chips University of Shanghai for Science and TechnologyShanghai 200093China Centre for Artificial-Intelligence NanophotonicsSchool of Optical-Electrical and Computer EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China Institute of Biomedical Engineering and Technology Academy for Engineer and TechnologyFudan University220 Handan RoadShanghai 200433China Shanghai Engineering Research Center of Industrial Microorganisms the Multiscale Research Institute of Complex Systems(MRICS)School of Life SciencesFudan University220 Handan RoadShanghai 200433China

Intracellular pH plays a critical role in biological functions,and abnormal pH values are related to various ***,we report on an intracellular pH sensor AgInS_(2)(AIS)/ZnS quantum dots(QDs)that show long fluorescence lifetimes of hundreds of nanoseconds and low *** lifetime imaging microscopy(FLIM)combined with AIS/ZnS QDs is used for the imaging of live cells in different pH buffers and different cell *** FLIM images of AIS/ZnS QDs in live cells demonstrate different intracellular pH values in different regions,such as in lysosomes or *** method can also distinguish cancer cells from normal cells,and the fluorescence lifetime difference of the AIS/ZnS QDs between the two types of cells is 100±7 *** importantly,the exfoliated cervical cells from 20 patients are investigated using FLIM combined with AIS/ZnS *** lifetime difference value between the normal and cervical cancer(CC)groups is 115±9 ns,and the difference between the normal and the precancerous lesion group is 64±9 *** the first time,the noninvasive method has been used for cervical cancer screening,and it has shown great improvement in sensitivity compared with a clinical conventional cytology examination.

关键词： AIS/ZnS quantum dots fluorescence lifetime imaging microscopy intracellular pH sensing cervical cancer screening noninvasive

Constructing bimodal nanoprobe based on Gd:AgInS_(2)/ZnS quantum dots for fluorometric/magnetic resonance imaging in mesenchymal stem cells

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Journal of Materials Science & Technology 2023年第17期148卷 116-122页

作者： Dan Yang Xian Wei Zhiyan Piao Zhongjie Cui Haiyang He Zhuoqi Wen Wanlu Zhang Le Wang Shiliang Mei ruiqian guo Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China College of Electronic and Optical Engineering&College of Flexible Electronics Nanjing University of Posts and TelecommunicationsNanjing 210023China Academy for Engineering and Technology Fudan UniversityShanghai 200433China Zhongshan-Fudan Joint Innovation Center Zhongshan 528437China Yiwu Research Institute of Fudan University Yiwu 322000China

Mesenchymal stem cells(MSCs)hold great promise in regenerative medicine and received overwhelm-ing concerns to promote their therapeutic *** to the shortage of MSCs-specific biomarkers,bimodal imaging nanoprobes with integrated complementary information are of great importance in ameliorating the efficacy of MSCs terminal *** this study,a noninvasive dual-mode imaging nanoprobe with enhanced detection sensitivity and spatial resolution based on alloyed Gd:AgInS_(2)/ZnS quantum dots(QDs)was first fabricated through a microwave-assisted heating *** QDs with red emissive fluorescence exhibit excellent biocompatibility in MSCs under a confocal *** for magnetic resonance imaging(MRI),the longitudinal relaxation rate of 11.1420 mM^(-1) S^(-1) of Gd:AgInS_(2)/ZnS QDs was achieved,which was 1.7 times higher than that of commercial MRI contrast agent(6.4667 mM^(-1) S^(-1)).Furthermore,the cellular internalization of Gd:AgInS_(2)/ZnS QDs exerts no significant effect on the adipogenesis of MSCs and is conducive to the observation of further adipogenic *** work helps to verify the promising prospect to develop a bimodal nanoprobe of fluorescence/MRI based on Gd:AgInS_(2)/ZnS QDs,which could monitor the differentiation and migration of MSCs for further therapeu-tic approach.

关键词： AgInS_(2)quantum dots Gd doping Dual-mode imaging Mesenchymal stem cells Differentiation

Quantum dots-hydrogel composites for biomedical applications

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Chinese Chemical Letters 2022年第3期33卷 1245-1253页

作者： Wenjie Zhou Zhe Hu Jinxin Wei Hanqing Dai Yuanyuan Chen Siyu Liu Zhongtao Duan Fengxian Xie Wanlu Zhang ruiqian guo Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Lighting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Zhongshan-Fudan Joint Innovation Center Zhongshan 528437China Yiwu Research Institute of Fudan University Yiwu 322000China

Quantum dots-hydrogel composites are promising new materials that have attracted extensive attention due to their incomparable biocompatibility and acceptable biodegradability, leading to enormous potential applications for various fields. This review summarizes the recent advances in quantum dots-hydrogel composites with a focus on synthesis methods, including hydrogel gelation in quantum dots(QDs) solution, embedding prepared QDs into hydrogels after gelation, forming QDs in situ within the preformed gel and cross-linking via QDs to form hydrogels. In particularly, biomedical applications as bioimaging,biosensing and drug delivery are also reviewed, followed by a discussion on the inherent challenges of design optimization, biocompatibility and bimodal applications and the prospect of the future development. These results will guide the development of quantum dots-hydrogel composites and provide critical insights to inspire researchers in future.

关键词： Quantum dots Hydrogels Bioimaging Biosensing Drug delivery

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H型省煤器在工业锅炉中的应用

现代工业经济和信息化 2022年第6期12卷 170-171,221页

作者：郭瑞倩哈尔滨汇焓科技有限公司黑龙江哈尔滨150000

针对某热源已有锅炉房,设计布置一台蒸汽锅炉。由于已有锅炉房高度及宽度有限,导致锅炉高度和长度方向空间设计受限,在保证脱硝空间的前提下,尾部竖井检修空间不足。H型省煤器焊有鳍片,单位空间内传热面积大,有效解决了尾部空间不足的... 详细信息

针对某热源已有锅炉房,设计布置一台蒸汽锅炉。由于已有锅炉房高度及宽度有限,导致锅炉高度和长度方向空间设计受限,在保证脱硝空间的前提下,尾部竖井检修空间不足。H型省煤器焊有鳍片,单位空间内传热面积大,有效解决了尾部空间不足的问题。

关键词：工业锅炉脱硝空间 H型省煤器

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蒸汽锅炉面式减温器改造

现代工业经济和信息化 2022年第4期12卷 324-325,328页

作者：郭瑞倩哈尔滨和汇焓科技有限公司黑龙江哈尔滨150028

某热力公司现有150 t/h用于发电的蒸汽锅炉,蒸汽减温方式为面式减温。由于实际运行中存在面式减温调节响应时间长,减温水量大等缺陷,故将面式减温器改造为喷水式减温器。因锅炉房面积有限,将原有面式减温管路进行改造,在充分利旧及节省... 详细信息

某热力公司现有150 t/h用于发电的蒸汽锅炉,蒸汽减温方式为面式减温。由于实际运行中存在面式减温调节响应时间长,减温水量大等缺陷,故将面式减温器改造为喷水式减温器。因锅炉房面积有限,将原有面式减温管路进行改造,在充分利旧及节省空间的前提下,增加喷水减温器、喷水管路及集箱等部件,满足锅炉正常运行。

关键词：蒸汽锅炉面式减温喷水式减温

健康人群四肢近端肌肉剪切波弹性成像测量的初步研究

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中华医学超声杂志（电子版） 2022年第6期19卷 541-547页

作者：唐远姣刘伊铃郭瑞倩钟琳邱逦四川大学华西医院超声医学科成都610041 四川大学望江医院超声科成都610065

目的测量健康人群四肢近端肌肉剪切波速度,分析与其相关的因素。方法选取2019年1月至2020年12月在四川大学华西医院招募的健康志愿者88例,记录受检者的性别、年龄、体质量指数(BMI)及运动习惯。测量不同肌肉(三角肌、肱二头肌、股直肌... 详细信息

目的测量健康人群四肢近端肌肉剪切波速度,分析与其相关的因素。方法选取2019年1月至2020年12月在四川大学华西医院招募的健康志愿者88例,记录受检者的性别、年龄、体质量指数(BMI)及运动习惯。测量不同肌肉(三角肌、肱二头肌、股直肌、股外侧肌)左右两侧及相同肌肉不同断面、不同位置及不同体位的剪切波速度,并对不同性别、年龄、BMI及运动状态的肌肉剪切波速度进行比较。随机抽取20例受试者,计算三角肌及股直肌剪切波速度测量的观察者间及观察者内一致性。结果各肌肉纵断面剪切波速度左、右两侧比较,差异无统计学意义(P均>0.05)。各肌肉剪切波速度纵断面均大于横断面(P均0.88)。结论剪切波弹性成像(SWE)能够用于定量测量健康人群肌肉的硬度值,肌肉的断面和部位及受检者的体位、性别、年龄、BMI和运动习惯为与其相关的因素,研究结果为特发性炎性肌病的进一步研究提供了依据。

关键词：四肢肌肉剪切波弹性成像健康受试者

基金迎来变革,抓住转型机遇—国家自然科学基金2010年半导体科学领域申请项目概况分析

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Journal of Semiconductors 2011年第1期32卷 123-134页

作者：何杰郭睿倩潘庆国家自然科学基金委员会信息科学部北京100085 复旦大学先进材料实验室上海200433

2011年度基金资助形式将有较大变化,面上项目资助期限将改为四年,平均资助强度将达到60多万元,重点项目资助期限改为五年,资助强度达300万元,敬请各位申请人认真阅读基金项目指南,或咨询单位科研管理部门,以了解详细情况。2010年度半导... 详细信息

2011年度基金资助形式将有较大变化,面上项目资助期限将改为四年,平均资助强度将达到60多万元,重点项目资助期限改为五年,资助强度达300万元,敬请各位申请人认真阅读基金项目指南,或咨询单位科研管理部门,以了解详细情况。2010年度半导体科学领域申请项目数维持了稳步增长的势头,半导体晶体与薄膜材料、集成电路设计与测试、半导体光电子器件申请项目数仍然比较集中,近两年来一直处于半导体学科前列。半导体光电子器件、半导体电子器件和新型信息器件申请项目数比2009年度有明显增长,而半导体物理申请项目数稍有下降。由于我们倡导大家关注器件制备和基础工艺中的关键科学问题,2010年针对这方面的研究有所提升,今后若干年内我们仍将引导大家加强这方面的研究,在评审过程和资助结果中也必将会有所体现。本文简述了2010年半导体科学领域基金申请与资助概况,分析近期动态及学科对策,并附2010年半导体科学领域资助的项目清单,供有关科技工作者参考。

关键词：自然科学基金半导体科学项目申请

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工业层燃锅炉烟气余热回收方案设计计算

山西化工 2021年第5期41卷 111-113页

作者：郭瑞倩哈尔滨汇焓科技有限公司黑龙江哈尔滨150000

北方冬季采暖大多燃用煤,而煤炭是不可再生能源。工业锅炉排烟热损失较大,高温烟气中蕴含的热量未经回收利用直接排入大气,属于能源的浪费。当锅炉排烟温度降低10℃~15℃时,锅炉效率提高1%,因此降低排烟温度对提高锅炉效率及减少能源浪... 详细信息

北方冬季采暖大多燃用煤,而煤炭是不可再生能源。工业锅炉排烟热损失较大,高温烟气中蕴含的热量未经回收利用直接排入大气,属于能源的浪费。当锅炉排烟温度降低10℃~15℃时,锅炉效率提高1%,因此降低排烟温度对提高锅炉效率及减少能源浪费具有实际意义。以沈阳某供暖公司工业锅炉受热面改造项目中的热水锅炉为研究对象,通过对尾部受热面的重新设计及热力计算,达到降低排烟热损失、提高锅炉效率、减少能源浪费的目的。

关键词：排烟热损失工业锅炉锅炉效率热力计算

氨基功能化聚醚砜气体分离膜对CO_2/N_2、CO_2/CH_4分离性能研究

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化工新型材料 2016年第3期44卷 95-97页

作者：罗居杰张萌郭瑞乾李晋平太原理工大学材料科学与工程学院太原030024 太原理工大学精细化工研究所太原030024

以四甲基联苯二酚、二氯二苯砜和二氟二苯甲酮为单体通过缩聚合成聚醚砜,再经过溴化和氨化制备了氨基功能化的聚醚砜,通过核磁和红外对其结构进行了表征。探讨了操作条件对CO_2、N_2和CH_4等3种气体在膜中渗透性能的影响。结果表明:氨... 详细信息

以四甲基联苯二酚、二氯二苯砜和二氟二苯甲酮为单体通过缩聚合成聚醚砜,再经过溴化和氨化制备了氨基功能化的聚醚砜,通过核磁和红外对其结构进行了表征。探讨了操作条件对CO_2、N_2和CH_4等3种气体在膜中渗透性能的影响。结果表明:氨化后的聚醚砜对CO_2的渗透性能及CO_2/N_2、CO_2/CH_4的分离效果影响显著。

关键词：聚醚砜氨化 CO2 分离膜