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SUMMARY:Carbon Nanomembranes (CNMs)
DTSTART:20141208T131500
DTEND:20141208T141500
DTSTAMP:20260510T135214Z
UID:0c5eaa2bb40c94c9723b45b85ae2fcab6000fa1a3c1f24537fe2817a
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Armin Gölzhäuser\, Physics of Supramolecular Systems\,
  Bielefeld University\, Bielefeld\, Germany\nA scheme for the fabrication 
 of extremely thin (1 nm !) functional carbon nanomembranes is presented [1
 \, 2].  The first step is the formation of a self-assembled monolayer (SA
 M). Then the SAM is exposed to electron or UV-irradiation that leads to a 
 dehydrogenation\, followed by a cross-linking between neighboring molecule
 s. The cross-linked SAM is then released from the surface\, forming a self
 -supporting carbon nanomembrane (CNM) with properties that are determined 
 by the constituting molecular monolayer. CNMs can be further processed\, f
 or example perforated or surfaces functionalized [3]. Pyrolysis transforms
  CNMs into graphene [4].  It will be shown that CNMs can be engineered wi
 th a controlled thickness\, conductivity\, permeability and elasticity [5]
 . CNMs are currently tested as ballistic membranes for the separation of m
 olecules. Advanced microscopic (helium ion microscopy) and spectroscopic m
 ethods as well as functional tests are applied to investigate the CNMs.\n[
 1] A. Turchanin\, A. Gölzhäuser: Carbon Nanomembranes from Self-Assemble
 d Monolayers: Functional surfaces without bulk\, Progress in Surface Scien
 ce\, 87\, 108 (2012).\n[2] P. Angelova\, H. Vieker\, N. Weber\, D. Matei\,
  O. Reimer\, I. Meier\, S. Kurasch\, J. Biskupek\, D. Lorbach\, K. Wunderl
 ich\, L. Chen\, A. Terfort\, M. Klapper\, K. Müllen\, U. Kaiser\, A. Göl
 zhäuser\, A. Turchanin: A Universal Scheme to Convert Aromatic Molecular 
 Monolayers into Functional Carbon Nanomembranes\, ACS Nano 7\, 6489 (2013)
 \n[3] Z. Zheng\, C. T. Nottbohm\, A. Turchanin\, H. Muzik\, A. Beyer\, M. 
 Heilemann\, M. Sauer\, A. Gölzhäuser: Janus nanomembranes: A generic pla
 tform for chemistry in two dimensions\, Angew. Chem. Int. Ed. 49\, 8493 (2
 010).\n[4] A. Turchanin\, D. Weber\, M. Büenfeld\, C. Kisielowski\, M. Fi
 stul\, K. Efetov\, T. Weimann\, R. Stosch\, J. Mayer and A. Gölzhäuser: 
 Conversion of Self-Assembled Monolayers into Nanocrystalline Graphene: Str
 ucture and Electric Transport\, ACS Nano\, 5\, 3896 (2011)\; A. Gölzhäus
 er: Graphene from Molecules\, Ang. Chem. Intl. Ed. 51\, 10936 (2012).\n[5]
  M. Ai\, S. Shishatskiy\, J. Wind\, X. Zhang\, C.T. Nottbohm\, N. Mellech\
 , A. Winter\, H. Vieker\, J. Qui\, K.J. Dietz\, A. Gölzhäuser\, A. Beyer
 : Carbon Nanomembranes (CNMs) supported by polymer: mechanics and gas perm
 eation\, Adv. Mater. 26\, 3412 (2014).\nBio: Armin Gölzhäuser studierte 
 Physik in Heidelberg und Tempe/Arizona (USA).\nPromotion 1993 in Heidelber
 g.\n1994-1996 als Feodor Lynen Stipendiat an der University of Illinois in
  Urbana (USA).\n1996-2001 wiss. Angestellter\, 2001 Habilitation\, dann Ho
 chschuldozent an der Universität Heidelberg.\nMärz - September 2003 Prof
 essor (Physikalische Chemie) an der Philipps-Universität Marburg.\nSeit O
 ktober 2003 Professor für Experimentalphysik an der Universität Bielefel
 d.\n2004 Mitbegründer des Bielefeld Institute for BioPhysics & NanoScienc
 e (BINAS).\nSeit 2008 Sprecher des Bielefeld Institute for Biophysics and 
 Nanoscience (BINAS).
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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