题目:Tuning Structure and Ordering for Charge Transport in Frameworks of Organic Semiconductors
报告人:Yi liu，劳伦斯伯克利国家实验室
(The Molecular Foundry, Lawrence Berkeley National Laboratory,Berkeley, California, USA)
地点: 907楼1445房间
时间: 2015年6月22日(周一)下午2:30-3:30
摘要:
Organic semiconductors with tunable optoelectronic properties are of great interest for their applications in high-performance electronic devices, such as organic field-effect transistors (OFET) and organic photovoltaics (OPVs). One of the fundamental aspects related to their optoelectronic properties is the control of molecular packing, long range ordering, as well as donor-acceptor interfaces, all of which are essential for charge separation and charge transport. Our two-prong approaches toward the development of high performance semiconductor materials include (a) developing electroactive building blocks that satisfy bandgap engineering, high absorptivity, and strong intermolecular interactions, and (b) building network structures to facilitate charge transport. In this talk I will describe our recent advances on the development of new electron donors and acceptors and their incorporation in conjugated polymers, as well as network materials based on covalent organic frameworks (COF) and quantum dots-semiconductor composite films. The combination of molecular level understanding of material composition and control of thin film ordering offer great opportunity for the development of novel high performance electronic materials.
Yi Liu Biosketch
PROFESSIONAL EXPERIENCE
04 2011–current Career Staff Scientist The Molecular Foundry, LBNL
06 2006–04 2011 Career-track Staff Scientist The Molecular Foundry, LBNL
EDUCATION AND TRAINING
2005–2006 Postdoc The Scripps Research Institute/Advisor: K. Barry Sharpless
2004–2005 Postdoc UCLA/Advisor: J. Fraser Stoddart
2000–2004 PhD Chemistry/UCLA/Advisor: J. Fraser Stoddart
1997–2000 MScChemistry/Fudan University (Shanghai, China)/Advisor: Quanrui Wang
1993–1997 BSc Chemistry/Fudan University (Shanghai, China)
RESEARCH INTERESTS
organic electronic materials, inorganic-organic hybrid materials, self assembly of porous 2D and 3D materials.
AWARDS AND MEMBERSHIPS
· 2014 Tan Chin Tuan Exchange Fellowship from Nanyang Technological University, Singapore
· Awardee of Oversea Young Scholars Cooperation Fund from NSF China, 2013
· Materials Research Society Graduate Student Silver Award, 2004
· Member of American Chemical Society
· Member of Materials Research Society
SELECTED PUBLICATIONS (from more than 70 publications)
1. Cai, S.-L.; Zhang, W.-G.; Zuckermann, R.; Li, Z.-T.; Zhao, X.; Liu, Y.* “The Organic Flatland—Recent Advances in Synthetic 2D Organic Layers”, Adv. Mater. in press. DOI: 10.1002/adma.201500124.
2. He, B.; Dai, J.; Zherebetskyy, D.; Chen, T. L.; Zhang, B. A.; Teat, S. J.; Zhang, Q.; Wang, L.-W.; Liu, Y.* “A Divergent Route to Core- and Peripherally Functionalized Diazacoronenes that Act As Colorimetric and Fluorescence Proton Sensors” Chem. Sci.2015,6, 3180-3186.
3. Tian, J.; Zhou, T.-Y.; Zhang, S.-C.; Aloni, S.; Altoe, V.; Xie, S.; Wang, H.; Zhang, D.-W.;* Zhao, X.; Liu, Y.;* Li, Z.-T.* “Three-Dimensional Periodic Supramolecular Organic Framework Ion Sponge in Water and Microcrystals”, Nat. Commun.2014, 5, 5574.
4. He, B.; Pun, A. B.; Zherebetskyy, D.; Liu, Y.; Liu, F.; Klivansky, L.; McGough, A.; Zhang, B. A.; Lo, K.; Russell, T.; Wang, L.-W.; Liu, Y.* “New Form of an Old Natural Dye: Bay-Annulated Indigo (BAI) as an Excellent Electron Accepting Unit for High Performance Organic Semiconductors” J. Am. Chem. Soc.2014, 136, 15093-15101.
5. Cai, S.-L.; Zhang, Y.-B.; Pun, A. B.; He, B.; Yang, J.; Toma, F. M.; Sharp, I. D.; Yaghi, O. M.; Fan, J.; Zheng, S.-R.; Zhang, W.-G.; Liu, Y.* “Tunable Electrical Conductivity in Oriented Thin Films of Tetrathiafulvalene-Based Covalent Organic Framework”, Chem. Sci.2014, 5, 4693-4700.
6. He, B.; Pun, A. B.; Klivansky, L. M.; McGough, A.; Ye, Y.; Zhu, J.; Guo, J.; Teat, S. J.; Liu, Y.* “Thiophene Fused Azacoronenes: Regioselective Synthesis, Self Organization, Charge Transport, and Its Incorporation in Conjugated Polymers”, Chem. Mater. 2014, 26, 3920-3927.
7. Zhang, Y.; Hanifi, D.; Lim, E.; Chourou, S.; Alvarez, S.; Pun, A.; Hexemer, A.; Ma, B.; Liu, Y.* “Enhancing the Performance of Solution-Processed n-Type Organic Field-Effect Transistors by Blending with Molecular ‘Aligner’”, Adv. Mater.2014, 26, 1223-1228.
8. Scheele, M.; Hanifi, D.; Zherebetskyy, D.; Chourou, S. T.; Axnanda, S.; Rancatore, B. J.; Thorkelsson, K.; Xu, T.; Liu, Z.; Wang, L.-W.; Liu, Y.; Alivisatos, A. P.* “PbS Nanoparticles Capped with Tetrathiafulvalenetetracarboxylate-Utilizing Energy Level Alignment for Efficient Carrier Transport”, ACS Nano2014, 8, 2532-2540.
9. Zhang, K. D.; Tian, J.; Hanifi, D.; Zhang, Y.; Sun, A. C.-H.; Zhou, T.; Zhang, L.; Zhao, X.*; Liu, Y.*; Li, Z-T.* “Towards a Single-Layer Two-Dimensional Honeycomb-Shaped Supramolecular Organic Framework in Water”, J. Am. Chem. Soc.2013, 135, 17913-17918 (COVER ART).
(报告联系人：徐庆峰老师）
