| 查看: 1203 | 回复: 20 | |||
[交流]
巴黎西岱大学(巴黎七大)Dr. Xiaonan SUN课题组招2025CSC博士生
|
|||
|
巴黎西岱大学(巴黎七大)Dr. Xiaonan SUN课题组招2025CSC博士生 研究单位：界面处理组织和系统动力学实验室（ITODYS） 要求： 化学或者物理化学背景，2024年7月份取得硕士学位，最好有托福或雅思成绩，CSC（公派）项目留学生。 课题主要方向是分子电子学，仪器涉及扫描隧道显微镜（STM），原子力显微镜（AFM），电化学工作站等。如有意向望尽快邮件导师Dr. Xiaonan Sun。Dr. Xiaonan Sun教授是个专注于科研的老师，平易近人，科研成果较好，在J. Am. Chem. Soc.和Nano Letter, Nanoscale, JPCL等学术杂志上发表多篇文章。 导师认真负责，关心留学生，不论在科研还是生活都给了大家很多帮助，对想出国读博的同学是很好的机会。 联系方式：Xiaonan Sun: sun.xiaonan@u-paris.fr 详细官方研究计划如下，同时欢迎邮件咨询。 Title: Charge transport properties of single molecular junctions Keywords: Charge transport properties, single molecule junction, Scanning tunneling microscope, diazonium reduction, conductance switching Type de financement demandé : 4 ans de thèse Equipe d’accueil : équipe nanoelectrochimie –ITODYS, UMR 7086, Université Paris Cité (Paris 7) Pôle : Sciences Exactes et Technologie / Exact Sciences and Technology Ecole doctorale : ED 388 - Chimie Physique et Chimie Analytique de Paris-Centre Langue de Travail : Anglais Direction : Dr. Xiaonan Sun Contact email: sun.xiaonan@u-paris.fr Project: The basic component of molecular devices is a molecular junction and the continuous downsizing of electrodes to a limit of 10 nm emphasizes the need for stable junctions at the single molecule level. As a result, the study of the transport properties of single molecular junctions (SMJ) has attracted broad and significant research interests in the past decades. In this respect, scanning tunneling microscopy break junction technique (STM-bj) will be used to construct and to study the charge transport properties and functionalities for future molecular memory and diode, the proposed phd project will mainly focus on the following points: Part I: The conductivity will be studied by STM-bj with the target to improve their stability Functional molecules with active anchoring groups are selected in investigating the single molecular junctions. STM-based break junction (BJ) measurements will be performed where STM tip will be controlled to crash on molecule decorated the surface and to pull-out the metal-molecule-metal junctions. Conductance-vs-extension (I(d)) curves will be extracted while pulling-out the junctions and will allow the measurements of the conductance of a single molecule.[1,2] The phd project will be to improve the SMJ stability, an important strategy is to step-wise modify the molecule/electrode contacts[3-4] from weak to strong. Rigid porphyrin-based SMJs will be built and compared with: weak top/molecule and strong covalent molecule/bottom contacts (C-Au or C-C bindings); and double covalent molecule/electrodes contacts. The life time of the SMJ is expected to be largely improved 5 (into minutes or hours) and the electric contacts to be optimized for a better performance of the junctions. The result of Part I will provide well-define method to achieve very stable SMJ for the following functionality characterization. Part II: SMJs with functionalities for memory The formation and the conductance measurement of SMJs with potential applicable functionalities for real-life devices are essential. Multi-states molecules [6-7] are appealing candidates for the design of molecular devices, such as for storage. The selected molecules which have not only multiple well-defined and stable states with distinctively tunable electronic properties [8-12], but can also and more importantly, be switched by different means such as light, heat or electrical stimulation. The target molecules will be then appropriately connected inside a SMJ (using the methods achieved in part I). Single molecule hysteretic I/V loops will be a direct proof of electric field generated SMJ conductance switching. A few factors such as the junction length, the modification of central molecular core with extra redox-active units are foreseen to involve multi states conductance switches and are hence expected to give high ON/OFF ratios above 1000. Overall, the ultimate and essential goal of the phd project is to build super-stable, multi-switchable SMJs with electric field generated conductance switching with high ON/OFF ratio for developing storage devices. Main teams of the field: The main teams of charge transport properties of single molecule junctions are: (i) I. Díez-Pérez, Department of Chemistry, University of King’s College London, England (ii) L.Venkataraman, Columbia University, USA (iii) H. Van der Zant, Delft University of Technology, the Netherlands (iv) W. J. Hong, Xiaoment University, China The PI of this project is expert on charge transport properties of single molecule junction and on Scanning tunneling microscopy to image molecular reactivities on surface. Using the experiences of the PI, two main target including the improvement of SMJ stability and the investigation of single molecule conductance switching will be mainly investigated. The scientific results can be used for the optimization of single molecule-based devices such as memory or storage. [1] B. Xu, N. J. Tao, Science 301, 1221-1223 (2003). [2] D. Xiang, X. Guo, et. al. Chem. Rev., 116, 4318 (2016). [3] V. Q. Nguyen, X. Sun, F. Lafolet, F. F. Audibert; F. Miomandre, G. Lemercier, F. Loiseau, J. C. Lacroix, J. Am. Chem. Soc. 138, 9381 (2016). [4] X. Yao, X. Sun*, F. Lafolet, J.C. Lacroix, Nano Lett. 20, 6899 (2020). [5] X. Yao, X. Sun*, J. Weiss, J.-C. Lacroix et al. Nano Lett. 21, 6540 (2021) [6] I. Hnid, X. Sun*, D. Frath, F. Lafolet, J. C. Lacroix, Nanoscale 11, 23042 (2019) [7] I. Hnid, L. Guan, E. Chatir, S. Cobo, F. Lafolet, F. Maurel, JC. Lacroix, X. Sun*, Nanomaterials 12 (8), 1318 (2022) [8] Q. V. Nguyen, P. Martin, D. Frath, M. L. Della Rocca, F. Lafolet, C. Barraud, P. Lafarge, V. Mukundan, D. James, R.L McCreery, J. C. Lacroix, J. Am. Chem. Soc. 139 , 11913(2017). [9] I. Hnid, D.Frath, F. Lafolet, X. Sun, J. C. Lacroix, J. Am. Chem. Soc. 142 7732(2020). [10] Q. V. Nguyen, P. Martin, D. Frath, M.L. Della Rocca, F. Lafolet, S. Bellinck, P. Lafarge, J.C. Lacroix*, J. Am. Chem. Soc. 140,10131(2018). [11] I. Hnid, M. Liu, D. Frath, S. Bellynck, F. Lafolet, X. Sun*, J.C. Lacroix , Nano Letters 21 (18), 7555 (2021). [12] X. Yao, M. Vonesch, M. Combes, J. Weiss, X. Sun*, and J. C. Lacroix. Single-Molecule Junctions with Highly Improved Stability. J. Mate. Chem. C, 12 (12), 4326 (2024). |
回复此楼» 猜你喜欢
297，工科调剂?河南农业大学本科
已经有14人回复
-
0854求调剂
已经有20人回复
-
291求调剂
已经有10人回复
-
26药学专硕105500求调剂
已经有7人回复
-
一志愿华中农业071010，320求调剂
已经有15人回复
-
2026 WR青拔
已经有7人回复
-
一志愿中科大材料与化工，353分还有调剂学校吗
已经有9人回复
-
271求调剂
已经有37人回复
-
申博自荐
已经有3人回复
-
300求调剂
已经有10人回复
» 本主题相关商家推荐: (我也要在这里推广)
» 抢金币啦！回帖就可以得到:
-
江西科技师范大学高分子化学与物理招生
+5/745
-
安徽农业大学李亚辉教授招收 化学、农药学、植保类2026级博士研究生
+3/165
-
考研落榜生看过来
+1/89
-
武汉纺织大学材料学院士兵计划调剂信息
+1/86
-
湖北大学材料学院 矿物与固废资源化利用环境能源新材料研究团队 第二轮调剂 少量名额
+1/86
-
山东航空学院安全工程专业085702第三轮接收研究生调剂，欢迎咨询
+1/85
-
华南理工大学微电子学院招博士研究生
+1/84
-
2026年盐城工学院化学工程与技术专业（学硕）招收08所有专业和0703方向考生
+1/39
-
佛山大学动物科技学院2026年硕士研究生招生调剂公告（第三批）
+1/21
-
天津理工大学功能晶体研究院（晶体材料全国重点实验室）杰青团队招收2026年博士研究生
+1/18
-
河南科技学院——复试调剂—线上复试
+1/18
-
沈阳工业大学石油化工学院传质强化研究团队招收硕士研究生调剂
+1/16
-
南京林业大学-国家级青年人才团队 诚聘青年教授、博士后等青年才俊
+1/9
-
大连大学-贵州省煤炭洁净利用重点实验室联合培养研究生 化学5人+环境工程7人
+1/8
-
莆田学院环境与生物工程学院资源与环境专硕（环境工程方向） 开放调剂招生
+1/7
-
最后调剂名额，丽水学院材料与能源工程学院
+1/5
-
大连海洋大学资源与环境专硕（0857）接收调剂学生
+1/4
-
安徽工程大学化学与环境工程学院2026级硕士研究生还有部分调剂名额-资源与环境专硕
+1/3
-
27年博士自荐
+1/1
-
中国科学院·过程工程研究所·招聘海内外高层次人才---过程所“百人计划”
+1/1
17楼2024-11-16 10:01:28
简单回复
2024-11-16 01:27
回复
武炎1314(金币+5): 谢谢参与
tfang3楼
2024-11-16 05:17
回复
hyjcs4楼
2024-11-16 05:53
回复
武炎1314(金币+5): 谢谢参与
哦 发自小木虫Android客户端
tzynew5楼
2024-11-16 06:01
回复
武炎1314(金币+5): 谢谢参与
i 发自小木虫Android客户端
2024-11-16 06:49
回复
nono20097楼
2024-11-16 07:26
回复
武炎1314(金币+5): 谢谢参与
。 发自小木虫Android客户端
羽毛枫f8楼
2024-11-16 07:32
回复
武炎1314(金币+5): 谢谢参与
云在青天9楼
2024-11-16 07:42
回复
slytjiaofei10楼
2024-11-16 08:01
回复
武炎1314(金币+5): 谢谢参与
shenrenren11楼
2024-11-16 08:23
回复
武炎1314(金币+5): 谢谢参与
庚辰辛丑12楼
2024-11-16 08:33
回复
武炎1314(金币+5): 谢谢参与
风吹荷叶煞13楼
2024-11-16 08:43
回复
jiaoxg14楼
2024-11-16 08:55
回复
武炎1314(金币+5): 谢谢参与
luciferosa15楼
2024-11-16 09:18
回复
武炎1314(金币+5): 谢谢参与
jjliouu16楼
2024-11-16 09:20
回复
武炎1314(金币+5): 谢谢参与
+
wdwd12318楼
2024-11-16 10:06
回复
武炎1314(金币+5): 谢谢参与
o
nBu锂19楼
2024-11-16 10:33
回复
武炎1314(金币+5): 谢谢参与
。
xishandian20楼
2024-11-16 15:16
回复
武炎1314(金币+5): 谢谢参与
miaojiabing21楼
2024-11-16 16:36
回复
武炎1314(金币+5): 谢谢参与
