刘伟民课题组介绍

课题组长

刘伟民:研究员/博导/Tenure Track Assistant Professor

通讯地址：华夏中路393号物质学院6号楼302C

电子邮件：liuwmⓐshanghaitech.edu.cn

2001年，毕业西北大学物理系，获光学硕士学位（导师：侯洵院士）;

2006年毕业于复旦大学物理系，获光学专业博士学位（导师：钱士雄教授）；

2006年8月至2009年4月在新加坡国立大学从事博士后研究；

2009年5月至2016年5月先后在美国南卡罗来纳大学、Emory大学和俄勒冈州立大学从事博士后研究工作；

2016年6月加入上海科技大学物质科学与技术学院，Tenure Track Assistant Professor。

教授课程：

《激光技术原理》——本科生专业选修课，3学分

《飞秒激光与超快光谱技术》——本研一体专业选修课，2学分

研究介绍

课题组长期诚聘助理研究员、博士后、硕博连读研究生，待遇优厚，工作环境优越，欢迎有志于在超快光谱学领域开展最前沿研究的学生学者加入！有意者请直接与课题组长邮件联系。

飞秒受激拉曼技术

飞秒受激拉曼光谱(Femtosecond Stimulated Raman Spectroscopy, FSRS)是一种新兴的时间分辨振动光谱技术，在实验上使用了三束光作用于待测样品。如图所示，使用脉冲激发光激发样品，使样品吸收激发光光子能量跃迁至激发态。然后再使用频域上超窄带的一束拉曼泵浦光(Raman Pump, RP)脉冲和一束频域上超连续且时域脉宽是飞秒量级的拉曼探测光(Raman Probe, PR)脉冲相结合，产生受激拉曼信号。其中拉曼泵浦光脉冲的波长连续可调，当其光子能量满足激发态向更高能级跃迁的能量差时，可以共振激发拉曼信号。共振受激拉曼的信号强度远远强于非共振情况下的拉曼信号强度。通过调整激发光(Actinic Pump, AP)与另外两束光之间的延时T，可以得到不同时刻的样品拉曼信号。通过拉曼信号的弛豫变化，可以解析出样品所发生的结构变化，从而清晰的解构出其结构动力学。

飞秒瞬态吸收

瞬态吸收光谱是一种十分成熟的泵浦-探测技术。实验中主要用到两束激光脉冲：激发光和探测光。通过探测光探测样品激发前后吸光度的变化，便可以得到完全由于光激发导致的吸收度变化组分，即瞬态吸收光谱。通过调整激发光与探测光之间的光程差，可以改变两者到达样品的时间差，并最终得到整个时间窗口内上的分子电子态弛豫过程。

目前前实验室拥有超快系统公司(Ultrafast Systems Inc.)的 Helios Fire 飞秒泵浦探测瞬态吸收光谱仪。时间窗口长达 8 ns，时间分辨率小于100 fs，探测范围约为320 nm ~ 1000 nm。

中红外瞬态吸收

中红外瞬态吸收装置利用FPAS碲镉汞探测器将瞬态吸收光谱的探测范围扩展到3000nm以上的中红外波段。此波段振动态光谱信息丰富，因此中红外瞬态吸收技术可以作为激发态动力学探测手段的有力补充。

瞬态吸收显微

瞬态吸收显微镜在已经成熟运用的瞬态吸收技术的基础上，提供了具体的空间信息，并从空间各向异性中解释材料的微观局部激发态动力学特征。首先在实验光路中产生飞秒激发光和探测光，随后将其引入显微镜系统中，通过物镜将其聚焦在样品处进行探测，并在整个视场中实现超快的时间分辨(飞秒)和空间分辨(1微米)。该技术为二维材料、纳米材料等在紫外、可见光以及红外波段的激发态光生载流子的超快动力学以及材料表面的载流子传输、激子迁移、声子动力学等超快过程提供了有力的观测手段。

荧光上转换

组内动态

发表文章

2026

Ziyu Wang, Boxiang Liu, Hongjie Li*, Weimin Liu*, Reply to the ‘Comment on “Mapping photoisomerization dynamics on a three-state model potential energy surface in bacteriorhodopsin using femtosecond stimulated Raman spectroscopy”’ by I. Schapiro, M. Olivucci, K. Heyne and S. Haacke, Chem. Sci., 2025, 16, DOI: 10.1039/D5SC05038C. Chem. Sci, 2026.
Bo Peng^†, Mingqing Chen^†, Tengfei Ma^†, Yifan Huang, Peng Wang*, Weimin Liu*, Dynamic-structural-distortion of spheroidene activates a hidden 3A g- state mediating carotenoid- to- bacteriochlorophyll energy transfer in a light-harvesting 2 complex. DOI: 10.1039/D5SC08508J, Chem.Sci, 2026.
吴凯文^†, 彭勃^†, 马腾飞^†, 王鹏, 刘伟民*, 变温飞秒受激拉曼光谱技术揭示类胡萝卜素（球形烯）的激发态结构动力学。物理学报， 2026。

2025

Xiaofan Wei^†, Chengjiang Du^†, Le Kang^†, Ruirui Liu, Yi Zhao, Yanpeng Qi, John A McGuire*, Weimin Liu*, Spatiotemporal Cooling and Diffusion of Hot Interlayer Excitons in Moiré-Potential-Suppressed WSe2/WS2 Heterostructures. DOI: https://doi.org/10.1021/acsnano.5c11799, ACS nano,2025.
Junhan Xie, Di Li, Haozheng Li, Bo Peng, Qinye Bao, Jiaming Jiang*, Bo Li*, Weimin Liu*, Surface and Bulk Defect Passivation in MAPbI3Perovskites with Daminozide: Effects on Carrier Dynamics and Mobility. DOI:https://doi.org/10.1002/advs.202500530, Adv, Sci.2025 , 202500530.
Z Wang^†, Y Chen^†, J Jiang, X Zhao,W Liu*. Mapping photoisomerization dynamics on a three-state model potential energy surface in bacteriorhodopsin using femtosecond stimulated Raman spectroscopy.DOI: 10.1039/D4SC07540D, Chemical Science, 2025.
C Wang, Y Chen, P Suo, K Sun, S Wang, X Lin, W Liu*, G Ma*. Gate-Controlled Ultrafast Interlayer Carrier Flow in Gr/MoS2 Heterostructures. DOI: https://doi.org/10.1021/acs.jpclett.5c01633,The Journal of Physical Chemistry Letters, 2025.
T Ma, M Ruan, R Zhao, Z Wang, Y Wang*, Y Huang*, Y Weng*, W Liu*. Distorted Intermediate SX (1Bu–) State in Xanthophylls Drives Efficient Energy Transfer in Light-Harvesting Complex II. DOI: https://doi.org/10.1021/acs.jpclett.5c01220, The Journal of Physical Chemistry Letters, 2025.
Y Chen, Z Wang, J Jiang*, W Liu*. Resolving Dual Photoreaction Channels of All-Trans-Retinal Using Femtosecond Stimulated Raman Spectroscopy. DOI: https://doi.org/10.1021/acs.jpcb.5c01529, The Journal of Physical Chemistry B,2025.
Di Li, JunhanXie, ShaobingXiong, XiaoxiaoZang, ZhennanLin, YuningWu, Weimin Liu*, Bo Li*, ZhenrongSun, Junhao Chu, QinyeBao*. Unveiling Charge Transfer and Recombination Dynamics in 3D/2D Heterostructure via Ultrafast Spectroscopy for Efficient Perovskite Solar Cells. DOI: https://doi.org/10.1002/advs.202508123, Adv. Sci.2025, e08123.

2024

Wei, X.; Wang, Z.H.; Wang, Z.Y.; Lu, Y.; Ji, Q*.; Liu, W*., Unveiling Spatiotemporal Diffusion of Hot Carriers Influenced by Spatial Nonuniform Hot Phonon Bottleneck Effect in Monolayer MoS2. DOI: https://doi.org/10.1021/acs.nanolett.4c02059, Nano Lett.2024.
J. Xie, W. Zhou, H. Li, Z. Wang, J. Jiang, Y. Zhang, X. Shen, Z. Ning, W. Liu, Visualizing Carrier Diffusion in Cs-Doping FAPbI3Perovskite Thin Films Using Transient Absorption Microscopy.
DOI: https://doi.org/10.1002/adom.202303004,
Adv. Optical Mater.2024, 12, 2303004.
Peng, B., Wang, Z., Jiang, J., Huang, Y., & Liu, W. Investigation of ultrafast intermediate states during singlet fission in lycopene H-aggregate using femtosecond stimulated Raman spectroscopy. DOI:https://doi.org/10.1063/5.0200802, The Journal of Chemical Physics.2024; 160 (19): 194304.
Wang, C., Chen, Y., Xiong, R., Sun, K., Lin, X., Wang, W., Suo, P., Liu, W., & Ma, G. Weakening of the Many-Body Interactions Induced by Charge Transfer in Gr/WS2 Heterostructures. DOI: https://doi.org/10.1021/acs.jpcc.4c02515, The Journal of Physical Chemistry C.2024 128 (22), 9209-9216

2023

Wang, Z.; Zhang, Y.; Chen, C.; Zhu, R.; Jiang, J.; Weng, T.; Ji, Q*.; Huang, Y*.; Fang, C*.; Liu, W*., Mapping the Complete Photocycle that Powers a Large Stokes Shift Red Fluorescent Protein.Angewandte Chemie International Edition. 20233,135, e2022.
An, Q.; Xing, Y.; Pu, R.; Jia, M.; Chen, Y.; Hu, A.; Zhang, S.; Yu, N.; Du, J.; Zhang, Y.; Chen, J*.; Liu, W*.; Hong, X*.; Zuo, Z*.; Identification of alkoxy radicals as the hydrogen atom transfer agents in the Ce-catalyzed C–H functionalization. Journal of the American Chemical Society. 2023，145, 1, 359–376.
Pu, R.; Wang, Z.; Zhu, R.; Jiang, J.; Weng, T.-C.; Huang, Y*.; Liu, W*., Investigation of Ultrafast Configurational Photoisomerization of Bilirubin Using Femtosecond Stimulated Raman Spectroscopy. The Journal of Physical Chemistry Letters2023, 14 (3), 809-816.
Zhao, Z.; Pu, R.; Wang, Z.; Jiang, J.; Liu, W*., Identification of Ultraviolet Photoinduced Presolvated Electrons in Water as the Reducing Agent in the Photoreduction of Graphene Oxide. The Journal of Physical Chemistry C2023.
Lin, Y.; Wei, X.; Fang, D.; Wang, Z.; Huang, Y.; Li, T.; Liu, W. Investigation of Ultrafast Photoisomerization Dynamics of Azobenzene Derivative (E)-1-Phenyl-2-((triisopropylsilyl)ethynyl)diazene^†. Chinese Journal of Chemical Physics , 2023, 36(6): 664-670.

2022

Suo, P.; Yan, S.; Pu, R.; Zhang, W.; Li, D.; Chen, J.; Fu, J.; Lin, X.; Miao, F.; liang, S.; Liu, W*.; Ma, G.-H*., Ultrafast photocarrier and coherent phonon dynamics in type-Ⅱ Dirac semimetal PtTe2 thin films probed by optical spectroscopy. Photonics Research 2022.
Wang, Z.; Jiang, J.; Huang, Y*.; Liu W*., Tracking Twisted Intramolecular Charge Transfer and Isomerization Dynamics in 9- (2,2- Dicyanovinyl) Julolidine Using Femtosecond Stimulated Raman Spectroscopy.Chinese Journal of Chemical Physics 2022.
Li, J.; Pu, R.; He, X.; Chen, Q.; Liu, S.; Liu, W*.; Li, J*., A Precipitation-Enhanced Emission (PEE) Strategy for Increasing the Brightness and Reducing the Liver Retention of NIR-II Fluorophores. Small2022, 2204153.

2021

Wei, J.; Wu, Y.; Pu, R.; Shi, L.; Jiang, J.; Du, J.; Guo, Z*.; Huang, Y*.; Liu, W*.,Tracking Ultrafast Structural Dynamics in a Dual-Emission Anti-Kasha-Active Fluorophore Using Femtosecond Stimulated Raman Spectroscopy. The Journal of Physical Chemistry Letters2021 , 12, 4466-4473.
Xu, W., Wei, L., Wang, Z., Zhu, R., Jiang, J., Liu, H., Du, J., Weng, T. C., Zhang, Y. B*., Huang, Y*., & Liu, W*. (2021). Tracking Ultrafast Fluorescence Switch-On and Color-Tuned Dynamics in Acceptor-Donor-Acceptor Chromophore. The Journal of Physical Chemistry. B, 125(38), 10796–10804.
Zhang, W.; Xu, W.; Zhang, G.; Kong, J.; Niu, X.; Chan, J. M*.; Liu, W*.; Xia, A*.,Direct Tracking Excited-State Intramolecular Charge Redistribution of Acceptor–Donor–Acceptor Molecule by Means of Femtosecond Stimulated Raman Spectroscopy. The Journal of Physical Chemistry B2021.
Ma, Q. S., Zhang, W.; Wang, C.; Pu, R.; Ju, C.-W.; Lin, X.; Zhang, Z*.; Liu, W*.; Li, R.,Hot Carrier Transfer in a Graphene/PtSe2 Heterostructure Tuned by a Substrate-Introduced Effective Electric Field. The Journal of Physical Chemistry C2021.
Yan, X.; Pu, R.; Xie, R.; Zhang, B.; Shi, Y.; Liu, W*.; Ma, G*.; Yang, N*., Design and fabrication of Bi2O3/BiFeO3 heterojunction film with improved photoelectrochemical performance. Applied Surface Science2021,552, 149442.
Wang T, Wang S*, Liu Z, He Z, Yu P, Zhao M, Zhang H, Lu L, Wang Z, Wang Z, Zhang W*, Fan Y, Sun C, Zhao D, Liu W, Bünzli JG, Zhang F*. A hybrid erbium(III)-bacteriochlorin near-infrared probe for multiplexed biomedical imaging. Nat Mater. 2021 Nov;20(11):1571-1578.
Zhang, P.; Yin, Y.; Wang, Z.; Yu, C.; Zhu, Y.; Yan, D.; Liu, W.; Mai, Y*., Porphyrin-Based Conjugated Microporous Polymer Tubes: Template-Free Synthesis and A Photocatalyst for Visible-Light-Driven Thiocyanation of Anilines., Macromolecules202154(7), 3543-3553.
Wang, Z.; Xu, W.; Wei, J.; Jiang, J.; Du, J.; Li, B*.; Liu, W*., Investigation of multiphoton pumped stimulated emission in semiconductor material using femtosecond two pulses induced stimulated emission technique. Optics Communications2021,479, 126446.
Liu Z, Hu M, Du J*, Shi T, Wang Z, Zhang Z, Hu Z, Zhan Z, Chen K, Liu W, Tang J, Zhang H*, Leng Y*, Li R. Subwavelength-Polarized Quasi-Two-Dimensional Perovskite Single-Mode Nanolaser. ACS Nano. 2021 Apr 27;15(4):6900-6908.
Yang Z, Yang K, Wei X, Liu W, Gao R, Jäkle F, Loo YL, Ren Y*. A Multiple Excited-State Engineering of Boron-Functionalized Diazapentacene Via a Tuning of the Molecular Orbital Coupling. J PhysChem Lett. 2021 Sep 30;12(38):9308-9314.
Wei, Z.; Andong, X.; Jie, K.; Wenqi, X.; Xinmiao, N.; Di, S*.; Weimin, L*.; Andong, X*. Probing the Effect of Solvation on PhotoexcitedQuadrupolar Donor-Acceptor-Donor Molecule via Ultrafast Raman Spectroscopy. Chinese Journal of Chemical Physics 2021.

2020

An, Q.;Wang, Z.;Chen, Y.;Wang, X.;Zhang, K.;Pan, H.;Liu, W*.; Zuo, Z*., Cerium-Catalyzed C–H Functionalizations of Alkanes Utilizing Alcohols as Hydrogen Atom Transfer Agents. Journal of the American Chemical Society2020,142 (13), 6216-6226.
Fu, L.; Wang, Z.; Liu, Y.; Wang, X.; Xu, R.; Liu, W*.; Chen, J*.; Xu, J., Observation of triplet nπ* state in ultrafast intersystem crossing of 6-azathymine. Journal of Photochemistry and Photobiology A: Chemistry2020,396, 112491.
Shi, L.; Yan, C.; Guo, Z*.; Chi, W.; Wei, J.; Liu, W.; Liu, X*.; Tian, H.; Zhu, W.-H*., De novo strategy with engineering anti-Kasha/Kasha fluorophores enables reliable ratiometric quantification of biomolecules. Nature Communications2020,11 (1), 1-11.
王子钰;魏景乐;徐文琪;姜甲明;黄逸凡*; 刘伟民*, 利用飞秒受激拉曼光谱技术研究Pyranine分子激发态质子传递过程. 物理学报 2020,69 (19), 198201-1-198201-8.

2019

Shang, Y.; Liao, Y.; Wei, Q.; Wang, Z.; Xiang, B.; Ke, Y.; Liu, W*.; Ning, Z*., Highly stable hybrid perovskite light-emitting diodes based on Dion-Jacobson structure. Science advances2019, 5 (8), eaaw8072. (co-corresponding author)
Zhang, W.; Guo, J.; Suo, P.; Lv, L.; Liu, J.; Lin, X.; Jin, Z.; Liu, W*.; Ma, G*., Optically controlled ultrafast terahertz switching in a CdTe nanostructure thin film. Applied optics2019, 58 (30), 8200-8206. (co-corresponding author)
Yang, Z.; Wang, X.; Chen, Y.; Zheng, Z.; Chen, Z.; Xu, W.; Liu, W.; Yang, Y. M.; Zhao, J.; Chen, T*., Ultrafast self-trapping of photoexcited carriers sets the upper limit on antimony trisulfide photovoltaic devices. Nature communications2019,10 (1), 1-8.

2018及以前

Liu, W.; Tang, L.; Oscar, B. G.; Wang, Y.; Chen, C.; Fang, C*., Tracking ultrafast vibrational cooling during excited-state proton transfer reaction with anti-Stokes and Stokes femtosecond stimulated Raman spectroscopy. The journal of physical chemistry letters2017,8 (5), 997-1003.
Liu, W.; Wang, Y.; Tang, L.; Oscar, B. G.; Zhu, L.; Fang, C*., Panoramic portrait of primary molecular events preceding excited state proton transfer in water.Chemical science2016,7 (8), 5484-5494.
Oscar, B. G.; Liu, W.; Zhao, Y.; Tang, L.; Wang, Y.; Campbell, R. E.; Fang, C*., Excited-state structural dynamics of a dual-emission calmodulin-green fluorescent protein sensor for calcium ion imaging. Proceedings of the National Academy of Sciences2014, 111 (28), 10191-10196.
Wang, W.; Liu, W.; Chang, I.-Y.; Wills, L. A.; Zakharov, L. N.; Boettcher, S. W.; Cheong, P. H.-Y*.; Fang, C*.; Keszler, D. A*., Electrolytic synthesis of aqueous aluminum nanoclusters and in situ characterization by femtosecond Raman spectroscopy and computations. Proceedings of the National Academy of Sciences2013, 110 (46), 18397-18401.