（报告一）
题目：Exploration of the landscape of two-dimensional materials
报告人：Zheng Liu School of Materials Science & Engineering, Nanyang TechnologicalUniversity, Singapore 639798, Singapore.
时间：2015年12月28日下午14：00- 14：50
地点：独墅湖校区 907-1445
Abstract：Theone-atom-think crystal like graphene have fantastic properties and attractedtremendous interests in these years, which open a window to the landscape ofthe two-dimensional (2D) materials. There are a large variety of 2D materialsbeyond graphene that are to be explored. Using chemical solid reaction andchemical vapour deposition, we have successfully synthesized a wide spectrum of2D materials (both single crystals and few layers), including
1. Binary 2D materials: Borides (h-BN, WB), TMDs (MoS2, WSe2,MoSe2, WSe2, MoTe2, WSe2, ReS2,ReSe2, PtS2, PtSe2, PdS2, PdSe2,NbSe2, SnS2, SnSe, SnSe2, TiS3,HfSe3, HfTe3, TiSe2, TaTe2, TaSe2),and others (InSe, In2Se3, GaSe, SrSi2, Ta3S2,BiI3, PbI2), etc.
2. Ternary andmulti-component 2D materials: BxCyNz, MoxW1-xS2,MoWTe4, MoS2xSe2(1-x), WSe2xTe2(1-x),ReS2xSe2(1-x), Ta2NiS5, Ta2NiSe5,Ta2ISe8, TixTa1-xS2, TixNb1-xS2,Ta3Pd3Te14, NiPS3, FePS3,ZnIn2S4, Ta2SeI, V2AlC, W2AlC, CuIP2S4, Tl2Mn2O7
3.Heterostructured 2D materials: Graphene/h-BN, MoS2/WS2,WSe2/MoSe2
4.Organ/Inorganic heterostructures: MoS2/Rubrene, Organic Perovskite/2D
Potential applications of 2D materials have been developed, such as ultrathinhigh-temperature oxidation-resistant coatings2D anisotropic electronics (FETs,resonators and photodetectors), energy harvester, lithium ion battery andcatalyst and wearable devices etc. These applications pave a promising way tothe large scale applications of 2D materials.
References:
[1]. Jiadong Zhou, Qingsehng Zeng, Danhui lv etc. Nano Lett, 2015, 15, 6400
[2]. Chaoliang Tan, Peng Yu, Yanling Hu etc. JACS, 2015, 137, 10430
Y. Gong, G. Shi, Z.Zhang,etc. Nature Communications, 2014, 5, 319
[3].Zheng Liu, Matin Amani, etc. Nature Communications 2014, 5, 5246
[4].Yongji Gong, Junhao Lin, Xingli Wang, etc. Nature Materials 2014,13, 1135
[5].Y.J. Gong,# Z. Liu,# A.R. Lupini,# etc. NanoLetters 2014, 14, 442.
[6].Z. Liu, Y.J. Gong et al., Nature Communication, 2013, 4, 2541.
[7].S. Najmaei,* Z. Liu,* W. Zhou, etc. Nature Materials 2013, 12, 754-759.
[8].Z. Liu, L. Ma, G. Shi,etc. Nature Nanotechnology 2013, 8,119-24.Z.
[9].Z. Liu, Y. Zhan, G. Shi, S.etc. Nature communications 2012, 3,879-879.
（报告二）
题目：Tunable Assembly of SilverOctahedra through the Interaction between Surface Capping Agents and Solvents
报告人：Shuzhou Li
School of Materials Science & Engineering, Nanyang TechnologicalUniversity, Singapore 639798, Singapore.
时间：2015年12月28日下午14：50- 15：40
地点：独墅湖校区 907-1445
Abstract:
A major challenge innanoparticle self-assembly is programming the large-area organization of asingle type of anisotropic nanoparticle into distinct superlattices withtunable packing efficiencies. We utilize nanoscale surface chemistry to directthe self-assembly of silver octahedral into three distinct two –dimensionalplasmonic superlattices at liquid/liquid interface.Systematically changing surface capping agents of silver octahedral leads to acontinuous superlattice structural evolution, from close-packed toprogressively open structures. This structural evolution arises from competinginterfacial forces between the particles and both liquid phases. We also use attractive interactionsbetween surface capping agents on nanoparticle surfaces to predict successfulsupercrystal formation in various solvents. In the model system ofpoly(vinylpyrrolidone) (PVP)-functionalized Ag octahedra, all-atomicsimulations reveal solvent-dependent attractive forces between PVP chainsdominating at larger particle separation distances, ~1,500-fold stronger thanthe attraction between Ag cores. Experimentally, the densest-packed Minkowskilattice forms when the simulated PVP interaction energy is weaker than -220 kBT.Stronger interactions lead to aggregation. In conjunction with otherhydrophilic and hydrophobic capping agents, we create a combinedsimulation-experimental phase diagram using molecular-level interactionsbetween capping agents to predict macroscopic supercrystal formation.
（报告三）
题目：“Doping”Oligoacenes with Heteroatoms
报告人：Qichun Zhang，
School of Materials Science and Engineering, NanyangTechnological University, Singapore 639798, Singapore. Email: qczhang@ntu.edu.sg
时间：2015年12月29日上午9：00- 9：50
地点：独墅湖校区 907-1445
Abstract：
Borrowing the idea from Si industry, wherethe properties of Si semiconductors can be greatly enhanced through the dopingof heteroatoms (e.g. B, P, As, Sb), we believe that the properties ofoligoacenes (or conjugated polycyclic hydrocarbons) could be tuned throughinserting heteroatoms (e.g. B, N, O, S, P, As) into the backbone ofoligoacenes. Moreover, the properties of as-obtained heteroacenes stronglydepend on the number, positions, types, valence, and mixing of heteroatoms.Here, I will report the synthesis, optical and electrochemical properties, aswell as fabrication of some devices for a series of heteroacenes (Scheme 1).
Scheme 1. The molecule structures for heteroacenes
Keywords:oligoazaacenes, synthesis, characterization, devices’ application
Reference:
[1] C. Wang, J. Zhang, G. Long, N. Aratani, H.Yamada, Y. Zhao, Q. Zhang*, Angew. ChemInt. Ed. 2015, DOI: 10.1002/anie.201500972.
[2] J. Wu, X. Rui,G. Long, W. Chen, Q. Yan*, Q. Zhang*, Angew.Chem Int. Ed. 2015, DOI: 10.1002/anie.201503072 and10.1002/ange.201503072.
[3] J. Li, Y. Zhao,J. Lu, G. Li, J. Zhang, Y. Zhao*, X. Sun*, Q. Zhang* J. Org. Chem. 2015, 80 (1), 109-113
[4] J. Li, P. Li,J. Wu, J. Gao, W. Xiong, G. Zhang, Y. Zhao, Q. Zhang*, J. Org. Chem. 2014, 79, 4438-45
[5] J. Li, J. Gao,G. Li, W. Xiong, Q. Zhang* J. Org. Chem. 2013, 78, 12760-12768
[6] P.-Y. Gu, F.Zhou, J. Gao, G. Li, C. Wang, Q.-F. Xu, Q. Zhang,* J.-M. Lu* J. Am. Chem. Soc. 2013, 135 (38), 14086.
[6] G. Li, Y. Wu,J. Gao, C. Wang, J. Li, H. Zhang, Y. Zhao, Y. Zhao, Q. Zhang* J. Am. Chem. Soc. 2012, 134,20298.
[7] G. Li, Y. Wu, J. Gao, J. Li, Y. Zhao, Q. Zhang,* Chem.Asian J. 2013, 8(7), 1574.
[8] J. Li and Q. Zhang* Synlett, 2013, 24,686-696
[9] G. Li, K. Zheng, C. Wang, K. S. Leck, F.Hu,* X. W. Sun,* Q. Zhang* ACS Appl.Mater. & interface 2013, 5(14),6458.
[10] Y. Wu, Z. Yin, J. Xiao, Y.Liu, F. Wei, K. J. Tan, C. Kloc, L. Huang, Q. Yan, F. Hu, H. Zhang, Q. Zhang*, ACS Appl. Mater. Interfaces 2012,4, 1883.
（报告四）
题目：Nanostructuredhybrid electrode materials for battery and supercapacitors
报告人：Honjin FAN
School of Physicaland Mathematical Sciences, Nanyang Technological University, Singapore 637371,Singapore
时间：2015年12月29日上午9：50- 10：40
地点：独墅湖校区 907-1445
Abstract：
The performance of electrochemical energystorage devices (batteries and supercapacitors) relies largely on a scrupulousdesign of nanoarchitectures and smart hybridization of active materials. Metaloxides, sulfides and carbides are being widely studied as electrode materialsbecause of their high capacity. However their poor conductivity and stabilitylower the rate performance and capacity stability over long cycles. To overcomethis, surface engineering of these nanomaterials or their hybridization withnanocarbon become an effective approach to enhance the rate performance andcycling stability.
Our group has been actively working on core-shellintegrated electrode materials directly on conductive substrates asboth supercapacitive and battery electrode materials. In this talk I willpresent our recent results on vanadium oxide and tin sulfide nanostructuresthat are direct grown onto 3D graphene foams for high-rates Li-ion and Na-ion batteryelectrodes. Through surface engineering, these materials demonstrate verystable capacity up to 1500 cycles at current density of 60 C.
In addition, fabrication and pseudocapacitiveproperties of metal carbide and nitride nanostructures will also be presentedthat can be operated at high rates from 1 V/s up to 1000 V/s. We demonstratethe ultralong (up to 150 000 times) stability of these nanostructuredpseudocapacitive electrodes that are comparable and even superior to many purecarbon-based electrodes.
（报告联系人：徐庆锋老师）