Klaus Müllen

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Klaus Müllen

Klaus Müllen (born January 2, 1947 in Cologne ) is a German chemist ( macromolecular chemistry , supramolecular chemistry , nanoscience ). He is known for the synthesis and research of the properties of graphene-like nanostructures and their potential applications in organic electronics .

Life

Mullen studied in Cologne Chemistry , 1969 at made Emanuel Vogel his diploma and in 1971 at the University of Basel in Fabian Gerson on electron spin resonance spectroscopy doctorate nuclear magnetic resonance and elektronenspinresonanzspektroskopische investigations of bridged Annulenes . Afterwards he was a post-doctoral student at the ETH Zurich with Jean François Michel Oth (1926–2003) and received his habilitation there in 1977 with a thesis on dynamic NMR spectroscopy and electrochemistry. In 1979 he became a professor of organic chemistry at the University of Cologne , and in 1983 he went to the University of Mainz as a professor . Since 1989 he has been director and scientific member at the Max Planck Institute for Polymer Research . In 2016 he retired. Since 1995 he has been honorary professor at the University of Mainz and at the Gutenberg Research College at the University of Mainz.

His main research interests are in the field of preparative macro- and supramolecular chemistry. His group succeeded in synthesizing and characterizing previously unattainable polycyclic aromatics such as superphenal , which has a molecular weight of 1182 g · mol −1 and consists of 34 condensed benzene rings . He developed methods of small, disk-like organic building blocks - using alkyl-substituted hexabenzo coronenes and in particular HBC-C12 - which assemble themselves into crystalline structures in the liquid phase (columnar liquid crystals) with application as possible organic field effect transistors . The two-dimensional benzene ring structures considered are examples of subunits of graphene lattices (graphene nanostructures). The graphene-like structures synthesized and investigated by Müllen include two-dimensional ribbons less than 50 nanometers wide with jagged edges. The electronic conduction properties and spintronic properties are of interest with a view to future replacement of silicon semiconductor technology. During the synthesis he introduced a new method in graphene polymer chemistry: soft landing mass spectrometry. Applications are synthetic light-emitted organic materials (such as OLEDs ) and organic analogues of semiconductor technology through the incorporation of molecular defects (defect engineering).

Awards and honorary positions (selection)

Publications (selection)

Books

  • K. Müllen: Nuclear magnetic resonance and electron spin resonance spectroscopic investigations on bridged annulenes , dissertation, Basel 1971
  • K. Müllen and G. Wegner: Electronic materials: the oligomer approach , Wiley-VCH-Verlag, Weinheim 1998, ISBN 3-527-29438-4
  • K. Müllen and U. Scherf: Organic light emitting devices: synthesis, properties and applications , Wiley-VCH-Verlag, Weinheim 2006, ISBN 3-527-31218-8

Essays:

  • Evolution of Graphene Molecules: Structural and Functional Complexity as Driving Forces behind Nanoscience, ACS Nano, Volume 8, 2014, pp. 6531-6541
  • Molecular defects in organic materials, Nature Reviews Materials, Volume 1, 2016, p. 15013
  • with Giovanna De Luca u. a .: Non-conventional Processing and Post-processing Methods for the Nanostructuring of Conjugated Materials for Organic Electronics, Advanced Functional Materials, Volume 21, 2011, pp. 1279-1295
  • with J. Wu, W. Pisula: Graphenes as Potential Material for Electronics, Chemical Reviews, Volume 107, 2007, pp. 718-747
  • with Wang, Xuan; Zhi, Linjie: Transparent, conductive graphene electrodes for dye-sensitized solar cells, Nano Letters, Volume: 8 (2008), pp. 323–327
  • with Jinming Cai, Pascal Ruffieux, Rached Jaafar et al .: Atomically precise bottom-up fabrication of graphene nanoribbons, Nature 466 (2010) pp. 470-473
  • with Zhong-Shuai Wu, Shubin Yang, Yi Sun et al .: 3D Nitrogen-Doped Graphene Airgel-Supported Fe3O4 Nanoparticles as Efficient Eletrocatalysts for the Oxygen Reduction Reaction, J. Am. Chem Soc. 134 (2012) pp. 9082-9085
  • with Anika Kinkhabwala, Zongfu Yu, Shanhui Fan et al .: Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna, Nature Photonics 3 (2009) pp. 654-657
  • with MD Watson, A. Feuchtenkotter: Big is beautiful - "Aromaticity" revisited from the viewpoint of macromolecular and supramolecular benzene chemistry, Chemical Reviews 101 (2001) pp. 1267-1300
  • with Ruili Liu, Dongging Wu, Xinliang Feng: Nitrogen-Doped Ordered Mesoporous Graphitic Arrays with High Electrocatalytic Activity for Oxygen Reduction, Angewandte Chemie International Edition 49 (2010) pp. 2565-2569

Web links

Individual evidence

  1. ↑ Life data, publications and academic family tree of Klaus Müllen at academictree.org, accessed on January 3, 2019.
  2. ↑ Hexakis ( n -dodecyl) -peri-hexabenzocoronene, dodecyl-substituted hexabenzo-coronene.
  3. ↑ HN Tsao, HJräder, W. Pisula, A. Rouhanipour, K. Müllen: Novel organic semiconductors and processing techniques for organic field-effect transistors, physica status solidi, Volume 205, 2008, pp. 421-429.
  4. ↑ GFK Fellow Klaus Müllen receives Hermann Staudinger Prize 2016 .
  5. ↑ Hans Joachimräder1, Ali Rouhanipour1, Anna Maria Talarico, Vincenzo Palermo, Paolo Samorì, Klaus Müllen, Processing of giant graphene molecules by soft-landing mass spectrometry, Nature Materials, Volume 5, 2006, pp. 276-280, abstract .
  6. ↑ Member entry by Prof. Dr. Klaus Müllen (with picture) at the German Academy of Sciences Leopoldina , accessed on July 18, 2016.
  7. ↑ University of Cologne awards an honorary doctorate to Prof. Klaus Müllen report-K dated December 21, 2016
  8. ↑ Hamburg Science Award 2017 goes to Klaus Müllen and Xinliang Feng Press release of the University of Dresden from June 26, 2017, accessed on December 26, 2017.
  9. ^ Public spring meeting of the Saxon Academy of Sciences in Leipzig. (PDF) In: saw-leipzig.de. Saxon Academy of Sciences , accessed April 17, 2019 .
personal data
SURNAME Müllen, Klaus
BRIEF DESCRIPTION German chemist
DATE OF BIRTH January 2, 1947
PLACE OF BIRTH Cologne