深圳大学材料学院李凯

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李凯，博士，深圳大学材料学院助理教授，深圳市海外高层次人才，博士毕业于香港大学（导师：支志明院士），研究方向为发光金属配合物及其OLED应用，目前主要聚焦于蓝光OLED材料的研究。在Angew. Chem. Int. Ed., Adv. Mater., Chem. Sci.等国际权威期刊上发表sci收录论文近20篇。主持国家自然科学基金青年项目、深圳高层次人才科研启动项目等。

李凯
职务：无
职称：助理教授
办公电话：86-755-86713940
EMAIL：kaili@szu.edu.cn

工作经历
2018 - 至今 助理教授，深圳大学材料学院
2015 - 2018 博士后，香港大学化学系（导师：支志明）
2013 - 2015 助理研究员，香港大学化学系（导师：支志明）

教育背景
2008 - 2013 博士，香港大学，化学系（导师：支志明）
2004 - 2008 学士，中国科学技术大学，化学系（导师：尤田耙）

研究方向
光电功能配合物
ORCID: 0000-0002-5869-1006; ResearcherID: AAJ-3991-2020
教学
《光电信息功能材料与器件》（本科生），《结构化学》（研究生）

研究领域:
1. 金属配合物光电材料的设计、合成、及器件应用
2. 高分子、超分子光电功能材料与器件
3. 光催化太阳能转化


论文:
20 J. Xiong, K. Li* T. Teng, X. Chang, Y. Wei, C. Wu, C. Yang*, "Dinuclear Zn(II) Complex Exhibiting Thermally Activated Delayed Fluorescence and Luminescence Polymorphism" Chem. Eur. J. 2020, 10.1002/chem.202000572
19. J.-G. Yang#, K. Li#, J. Wang, S. Sun, W. Chi, C. Wang, X. Chang, C. Zou, W.-P. To, M.-D. Li, X. Liu, W. Lu, H.-X. Zhang, C.-M. Che, Y. Chen*, "Controlling Metallophilic Interactions in Chiral Gold(I) Double Salts towards Excitation Wavelength‐Tunable Circularly Polarized Luminescence" Angew. Chem. Int. Ed. 2020, 10.1002/anie.202000792.(#Equal contribution)
18. Q.-Q. Chen, X. Yang, C.-C. Hou,K. Li*, Y. Chen*, “Inlay Ultrafine Ru Nanoparticles into Self-supported Ni(OH)2 Nanoarry for Hydrogen Evolution with Low Overpotential and Enhanced Kinetics”J. Mater. Chem. A2019, 7, 11062-11068.
17. C.-C. Hou, Q.-Q. Chen, K. Li,C.-J. Wang, C.-Y. Peng, R. Shi, Y. Chen*, “Tailoring three-dimensional porous cobalt phosphides templated from bimetallic metal–organic frameworks as precious metal-free catalysts towards the dehydrogenation of ammonia-borane” J. Mater. Chem. A, 2019, 7, 8277-8283.
16. K. Li, Q. Wan, C. Yang, X.-Y. Chang, K.-H. Low, C.-M. Che*, “Air-Stable Blue Phosphorescent Tetradentate Platinum(II) Complexes as Strong Photo-Reductant" Angew. Chem. Int. Ed. 2018, 57, 14129-14133.
15. R. Shi, H.-F. Ye, F. Liang, Z. Wang, K. Li, Y. Weng, Z. Lin, W.-F. Fu, C.-M. Che, Y. Chen*, “Interstitial P-Doped CdS with Long-lived Photogenerated Electrons for Photocatalytic Water Splitting without Sacrificial Agents” Adv. Mater. 2018, 30, 1705941.
14. D. Chen#, K. Li#, X. Guan, G. Cheng, C. Yang, C.-M. Che*, “Luminescent Iridium(III) Complexes Supported by TetradentateTrianionic Ligand Scaffold with Mixed O, N, and C Donor Atoms: Synthesis, Structures, Photo-physical Properties and Material Applications” Organometallics, 2017, 36, 1331-1344.(#Equal contribution)
13. Li, K.; Tong, G. S.-M.; Wan, Q.-Y.; Kwong, W.-L.; Cheng, G.; Che, C.-M.* “Highly Phosphorescent Platinum(II) Emitters: Photophysics, Materials and Biological Applications” Chem. Sci. 2016, 7, 1653-1673. (Top 50 Articles of Chem. Sci. in 2016; ESI highly cited paper)
12. F. Wang, M. Lan, W.-P. To, K. Li, C.-N. Lok, P. Wang, C.-M. Che*, “A macromolecular cyclometalated gold(III) amphiphile displays long-lived emissive excited state in water: self-assembly and in vitro photo-toxicity” Chem. Commun. 2016, 52, 13273-13276.
11. F. Wang, B. Cao, W.-P. To, C.-W. Tse, K. Li, X. Chang, C. Zang, S. L.-F. Chan, C.-M. Che*, “The effects of chelating N4 ligand coordination on Co(II)-catalyzed photochemical conversion of CO2 to CO. Reaction mechanism and DFT calculations” Catal. Sci. Technol. 2016, 6, 7408-7420.
10. C. Yang, F. Mehmood, T. L. Lam, S. L.-F. Chan, Y. Wu, C.-S. Yeung, X. Guan, K. Li, C. Y.-S.Chung, C.-Y. Zhou, T. Zou, C.-M. Che*, “Stable luminescent iridium(III) complexes with bis(N-heterocyclic carbene) ligands: photo-stability, excited state properties, visible-light-driven radical cyclization and CO2 reduction, and cellular imaging” Chem. Sci. 2016, 7, 3123-3136.
9. K. Li, T. Zou, Y. Chen, X. Guan, C.-M. Che*, “Pincer-Type Platinum(II) Complexes Containing N-Heterocyclic Carbene (NHC) Ligand: Structures, Photophysical and Anion-Binding Properties, and Anticancer Activities” Chem. Eur. J. 2015, 21, 7441-7453.
8. Y. Chen, G. Cheng, K. Li, D. P. Shelar, W. Lu, C.-M. Che*, “Phosphorescent Polymeric Nanomaterials with Metallophilic d10-d10 Interactions Self-assembled from [Au(NHC)2]+ and [M(CN)2]-” Chem. Sci. 2014, 5, 1348-1353.
7. K. Li; G. Cheng, C. Ma, X. Guan, W.-M. Kwok, Y. Chen, W. Lu, C.-M. Che*, “Light-Emitting Platinum(II) Complexes Supported by TetradentateDianionicBis(N-Heterocyclic Carbene) Ligands: Towards Robust Blue Electro phosphors” Chem. Sci. 2013, 4, 2630-2644.
6. W.-B. Chen*; Z.-X. Xu, K. Li, S. S.-Y. Chui, V. A. L. Roy, P.-T. Lai, C.-M. Che, “Improving the performance of polymer solar cells by adjusting the crystallinity and nanoscale phase separation” Chin. Phys. B. 2012, 21, 078401.
5. K. Li; X. Guan, C.-W. Ma, W. Lu*, Y. Chen, C.-M. Che*, “Blue ElectrophosphorescentOrganoplatinum(II) Complexes with DianionicTetradentateBis(carbene) Ligands” Chem. Commun. 2011, 47, 9075-9077.
4. K. Li, Y. Chen, W. Lu, N. Zhu, C.-M. Che*, “A Cyclometalated Platinum(II) Complex with a Pendent Pyridyl Motif as Solid-State Luminescent Sensor for Acidic Vapor” Chem. Eur. J. 2011, 17, 4109-4112.
3. Y. Chen, K. Li, H. O. LIoyd, W. Lu, S. S.-Y. Chui, C.-M. Che*, “Tetrakis(arylisocyanide) Rhodium(I) Salts in Water: NIR Luminescent and Conductive Supramolecular Polymeric Nanowires with Hierarchical Organization” Angew. Chem. Int. Ed. 2010, 49, 9968-9971. (Highlighted by Nature China)
2. Y. Chen, K. Li, W. Lu, S. S.-Y. Chui, C.-W. Ma, C.-M. Che*, “Photoresponsive Supramolecular Organometallic Nanosheets Induced by Pt(II)-Pt(II) and C-H-π Interactions” Angew. Chem. Int. Ed. 2009, 48, 9909-9913.
1. J. Du, L. Chai, G. Wang, K. Li, Y. Qian*, “Controlled Synthesis of One-Dimensional Single-Crystal Co3O4 Nanowires” Aust. J. Chem. 2008, 61, 153-158.

专利:
Che, C.-M.; Li, K. “Phosphorescent Material, Their Preparations and Applications” US8957217B2.

chandler

有机发光二极管(OLED)作为新型显示技术已经在高端手机、平板电脑、智能穿戴、和电视等领域获得了广泛应用。高效稳定的三原色有机发光材料是OLED产业链的核心之一。更为重要的是，开发具有自主知识产权的发光材料对于我国OLED产业链的安全保障具有重要意义。其中，受限于能隙定律的快速非辐射衰减过程，高效率红光材料的发展始终面临挑战。另外，红光和近红外光（NIR）有机材料和器件在信息安全、生命健康等重要领域也具有广泛的应用。因此，开发具有应用前景的长波长发光材料一直受到科学家的特别关注。目前，在发展可替代铱配合物的掺杂红光材料研究中仅有少数关于单核磷光铂配合物和纯有机热激活延迟荧光（TADF）的报道。然而，这些发光材料通常具有较长的激发态寿命，导致器件在高亮度下具有严重的效率滚降和使用寿命问题。另一方面，无论是基于金属配合物的磷光还是纯有机TADF在掺杂NIR-OLED上都面临发光效率低的难题，比如在700 nm以上的波段范围内，外量子效率（EQE）>10%的报道仍然很少。

Figure 1.(a) Illustration of the orbital diagrams and decay dynamics (krandknr) of3MLCT and3IL excited states. (b) The formation and orbital diagrams of MMLCT excited states for square-planar Pt(II) complexes. (c) Trigonometry analysis of the intermetallic distance dependent on the bridging ligand. (d) Chemical structures and (e) perspective view of the single crystal structures of the dinuclear Pt(II) complexes1−3in this work.

        具有金属-金属作用的过渡金属配合物已经被证明可产生高辐射速率的三重态激发态，有关其机理的研究已经有近三十年历程（Figure 1）。近年来，铂配合物的聚集体用于红色和NIR-OLED也证实了这一原理用于OLED的可行性。然而，聚集体发射需要采用高浓度掺杂或者非掺杂的发光层、且其发光性质严重依赖于分子固体的堆积模式，对严格控制器件的制造条件和优化提出了挑战。目前的研究表明该类型器件可能面临严重的使用寿命问题。深圳大学杨楚罗教授和李凯助理教授团队设计合成了一种新型的双核铂配合物，通过刚性分子桥强化分子内金属-金属作用实现了不依赖于分子间堆叠的高性能的红光和近红外光OLED。 源于分子内的强Pt-Pt和π-π作用，该类材料体系具有良好的热稳定性，与四齿配体铂配合物相当，其红光和NIR发射效率分别超过60%和40%、且发光寿命短至1微秒左右。作者采用传统掺杂工艺基于这类材料制备了红光和近红外光OLED器件，其外量子效率分别达到23%和15%，且效率滚降和器件寿命均有良好的表现，展现了该类材料的应用前景（Figure 2）。

Figure 2.(a) Normalized EL spectra of the red and NIR devices. (b) CIEx,ycoordinates and photographs of the operating devices at 1000 cd m-2. (c) J-L-V characteristics and (d) EQEs versus the luminance of the red OLEDs doped with1(12 wt.%) or2(9 wt.%). (e) J-R-V characteristics and (f) EQEs versus the radiance of the NIR OLED doped with3(6 wt.%).

         本论文发表于Angew. Chem. Int. Ed.10.1002/anie.202113718，深大大学为唯一完成单位，深圳大学材料学院助理教授李凯和特聘教授杨楚罗为共同通讯作者。深圳大学材料学院副研究员张友明博士、助理教授缪景生博士和研究生熊金帆为共同第一作者。该研究得到了国家自然科学基金、广东省科技厅基础与应用基础研究基金和高层次人才计划、深圳市孔雀团队，深圳市高层次人才项目等科技计划的支持。论文详细情况请见https://onlinelibrary.wiley.com/doi/10.1002/anie.202113718