Presenter: Prof. XinliangFeng
Technische Universitaet Dresden, Germany
Topic: Synthetic Two-Dimensional Soft Materials: A Fascinating Materials World
Time: 02:00PM, Oct.13th (Thursday)
Location: ConferenceRoom B, BLDG 909-1F
Abstract
In the past decade, asinspired by the discovery of graphene, two-dimensional (2D) materials whichpossess a periodic network structure and with a topographical thickness ofatomic/molecular level, have emerged as the new paradigm of materials withenormous potentials, ranging from electronics and optoelectronics to energytechnology, membrane, sensing and biomedical applications. Various fabricationstrategies have been developed to attain high quality 2D materials. Among ofthem, mechanical exfoliation remains the most popular protocol to isolatesingle-layer high quality 2D materials for fundamental physical studies. In contrast to the tremendous exploration ofgraphene and 2D inorganic materials such as metal dichalcogenides, metal oxidesand nitrides, the study on 2D soft material systems including the bottom-uporganic synthesis of graphene, 2D metal-organic frameworks, 2Dpolymers/supramolecular polymers as well as supramolecular approach to 2Dorganic nanostructures remains under development.
In this lecture, we willpresent our recent efforts on the bottom-up synthetic approaches towards novel2D conducting polymers and supramolecular polymers with structural control atthe atomic/molecular-level or at the meso-scale. First, we will briefly discussthe latest development on the synthesis of graphene nanostructures(nanoribbons) with atomically precise structures. Both solution and on-surfacesynthesis approaches have been established to fabricate planar graphene nanoribbonsupon intramolecular cyclodehydrogenation of corresponding dendriticpolyphenylene precursors. Second, we will demonstrate the synthetic 2Dconjugated polymers including 2D Schiff-base type conjugated polymers and 2Dmetal-dithienene/diamine coordination supramolecular polymers at the air-wateror liquid-liquid interfaces. The resulting 2D conjugated polymers exhibitsingle-layer feature, good local structural ordering and with a size of cm2.The functional exploration of such 2D single-layer conjugated polymers for theelectrical and mechanical properties, as well as serving as efficientelectrocatalytic water splitting catalysts will be demonstrated. Third, we willintroduce the self-assembly of a host−guest enhanced donor−acceptorinteraction, consisting of a tris(methoxynaphthyl)-substituted truxene spacer,and a naphthalene diimide substituted with N-methyl viologenyl moieties asdonor and acceptor monomers, respectively, in combination with cucurbit[8]urilas host monomer toward monolayers of an unprecedented 2D supramolecularpolymers at liquid-liquid interface. Finally, we will present thesupramolecular approaches to synergetic control the multi-component assembly,which yield 2D conducting polymers, such as polypyrrole and polyanilinenanosheets featuring 2D structures and with adjustable mesopores with/withouton various functional free-standing surfaces. The unique structure withadjustable pore sizes (5�20 nm) and thickness (35�45 nm), enlarged specificsurface area as well as high electrical conductivity make 2D conductingpolymers promising for a number of applications.
Biography
Xinliang Feng is a full professor at Technical University ofDresden. He received his Bachelor’s degree in analytic chemistry in 2001 andMaster’s degree in organic chemistry in 2004. Then he joined Prof. KlausMüllen's group at the Max Planck Institute for Polymer Research for PhD thesis,where he obtained his PhD degree in April 2008. Since December 2007, he wasappointed as a group leader at the Max-Planck Institute for Polymer Research,and since 2012, he became a distinguished group leader at the Max-PlanckInstitute for Polymer Research. Since 2011, he was appointed as an adjunctdistinguished professor at the Shanghai Jiao Tong University and as thedirector for the Institute of Advanced Organic Materials.
His current scientific interests include graphene, synthetictwo-dimensional materials, organic conjugated materials, and carbon-richmolecules and materials for electronic and energy-related applications. He has publishedmore than 300 research articles which have attracted more than 17000 citationswith H-index of 64.
He has been awarded several prestigious prizes such as IUPAC Prizefor Young Chemists (2009), Finalist of 3rd EuropeanYoung Chemist Award, European Research Council (ERC) Starting Grant Award (2012),Journal of Materials Chemistry Lectureship Award (2013), ChemComm EmergingInvestigator Lectureship (2014), Highly Cited Researcher (Thomson Reuters,2014-2016), Fellow of the Royal Society of Chemistry (FRSC, 2014). He is thehead of ESF group “Graphene Center Dresden”. He is an Advisory Board Member for Advanced Materials, Journal of MaterialsChemistry A, Chemistry -An AsianJournal, ChemNanoMater, Energy Storage Materials, etc. He is also one ofthe Working Package Leaders for European commission’s pilot project GrapheneFlagship.
Contact:Prof. Lifeng Chi
（责任编辑：张伶 邮箱：zhangling10@suda.edu.cn）
