Klaus Müllen Explained

Klaus Müllen
Birth Place:	Cologne, Germany
Nationality:	German
Fields:	polymer chemistry supramolecular chemistry nanotechnology
Workplaces:	University of Mainz Max Planck Institute for Polymer Research
Alma Mater:	University of Cologne University of Basel
Thesis Title:	Nuclear resonance and electron spin resonance spectroscopic studies on bridged annulenes
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Doctoral Advisor:	Fabian Gerson
Academic Advisors:	Jean François Michael Oth
Doctoral Students:	Eva Harth
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Klaus Müllen (born 2 January 1947) is a German chemist working in the fields of polymer chemistry, supramolecular chemistry and nanotechnology. He is known for the synthesis and exploration of the properties of graphene-like nanostructures and their potential applications in organic electronics.

Early life and education

Müllen was born in Cologne. He studied chemistry there and was awarded a PhD in 1971 under the supervision of Fabian Gerson at the University of Basel. He specialized in electron spin resonance (ESR) spectroscopy and his dissertation was on nuclear resonance and electron spin resonance spectroscopic studies on bridged annulenes. He completed post-doctoral studies at the ETH Zurich under Jean François Michel Oth (1926–2003) and received his habilitation in 1977 with a thesis on dynamic NMR spectroscopy and electrochemistry.

Research career

In 1979, he became 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 of the Max Planck Institute for Polymer Research. In 2016, he became emeritus. Since 1995, he has been honorary professor at the University of Mainz and at the Gutenberg Research College of the University of Mainz.

His research interests are in the field of preparative macro- and supramolecular chemistry. Among other things, his group has succeeded in synthesizing and characterizing hitherto unattainable large polycyclic aromatics such as superphenalene, which has a molecular mass of 1182 g·mol⁻¹ and consists of 34 condensed benzene rings.^[1] He has developed small disc-like organic building blocks using alkyl-substituted hexabenzocoronene, and in particular HBC-C12^[2] – which self-assembles into crystalline liquid-phase structures (columnar liquid crystals) as potential organic field-effect transistors.^[3] The considered two-dimensional benzene ring structures are examples of subunits of graphene lattices (graphene nanostructures). The graphene-like structures synthesized and investigated by Müllen include two-dimensional bands of less than 50 nanometers width with jagged edges. Of interest here are the electronic conduction properties and spintronics properties with a view to future replacement of silicon-semiconductor technology.^[4] In synthesis, he introduced a new method in graphene polymer chemistry: soft-landing mass spectrometry.^[5] Applications include synthetic light-emitting organic materials (such as OLEDs) and incorporation of molecular defects (defect engineering) organic analogues of semiconductor technology.

Selected awards and honorary posts

• 2001: Honorary Doctorate, University of Sofia
• 2010: Honorary Doctorate, Karlsruhe Institute of Technology
• 2013: Member of the American Academy of Arts and Sciences
• 2016: Honorary Professor, Beijing University of Chemical Technology
• 2017: Member of the Academia Europaea^[6]
• 2017: (shared with Xinliang Feng)^{[7] [8]}

• 2023: Member of Chinese Academy of Sciences^[9]

Selected publications

Books

• K. Müllen: Kernresonanz- und elektronenspinresonanzspektroskopische Untersuchungen an überbrückten Annulenen, Dissertation, Basel 1971
• Book: Müllen . K. . Wegner . Gerhard . Electronic materials : the oligomer approach . Wiley-VCH . Weinheim . 1998 . 978-3-527-61205-5 . 311137129.
• Book: Müllen . K. . Scherf . Ullrich . Organic light emitting devices : synthesis, properties and applications . Wiley-VCH . Weinheim . 2006 . 3-527-31218-8 . 85821117.

Articles:

• Müllen . Klaus . Evolution of Graphene Molecules: Structural and Functional Complexity as Driving Forces behind Nanoscience . ACS Nano . American Chemical Society (ACS) . 8 . 7 . 11 July 2014 . 1936-0851 . 10.1021/nn503283d . 6531–6541. 25012545 . 11858/00-001M-0000-0023-C371-6 . free .
• Müllen . Klaus . Molecular defects in organic materials . Nature Reviews Materials . Springer Science and Business Media LLC . 1 . 2 . 27 January 2016 . 15013 . 2058-8437 . 10.1038/natrevmats.2015.13. 2016NatRM...115013M . 136209961 .
• De Luca . Giovanna . Pisula . Wojciech . Credgington . Dan . Treossi . Emanuele . Fenwick . Oliver . Lazzerini . Giovanni Mattia . Dabirian . Reza . Orgiu . Emanuele . Liscio . Andrea . Palermo . Vincenzo . Müllen . Klaus . Cacialli . Franco . Samorì . Paolo . Organic Electronics: Non-conventional Processing and Post-processing Methods for the Nanostructuring of Conjugated Materials for Organic Electronics (Adv. Funct. Mater. 7/2011) . Advanced Functional Materials . Wiley . 21 . 7 . 4 April 2011 . 1616-301X . 10.1002/adfm.201190017 . 1206.
• Wu . Jishan . Pisula . Wojciech . Müllen . Klaus . Graphenes as Potential Material for Electronics . Chemical Reviews . American Chemical Society (ACS) . 107 . 3 . 10 February 2007 . 0009-2665 . 10.1021/cr068010r . 718–747. 17291049 .
• Wang . Xuan . Zhi . Linjie . Müllen . Klaus . Transparent, Conductive Graphene Electrodes for Dye-Sensitized Solar Cells . Nano Letters . American Chemical Society (ACS) . 8 . 1 . 11 December 2007 . 1530-6984 . 10.1021/nl072838r . 323–327. 18069877 .
• Cai . Jinming . Ruffieux . Pascal . Jaafar . Rached . Bieri . Marco . Braun . Thomas . Blankenburg . Stephan . Muoth . Matthias . Seitsonen . Ari P. . Saleh . Moussa . Feng . Xinliang . Müllen . Klaus . Fasel . Roman . Atomically precise bottom-up fabrication of graphene nanoribbons . Nature . Springer Science and Business Media LLC . 466 . 7305 . 2010 . 0028-0836 . 10.1038/nature09211 . 470–473. 20651687 . 2010Natur.466..470C . 4422290 .
• Wu . Zhong-Shuai . Yang . Shubin . Sun . Yi . Parvez . Khaled . Feng . Xinliang . Müllen . Klaus . 3D Nitrogen-Doped Graphene Aerogel-Supported Fe3O4 Nanoparticles as Efficient Electrocatalysts for the Oxygen Reduction Reaction . Journal of the American Chemical Society . American Chemical Society (ACS) . 134 . 22 . 29 May 2012 . 0002-7863 . 10.1021/ja3030565 . 9082–9085. 22624986 .
• Kinkhabwala . Anika . Yu . Zongfu . Fan . Shanhui . Avlasevich . Yuri . Müllen . Klaus . Moerner . W. E. . Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna . Nature Photonics . Springer Science and Business Media LLC . 3 . 11 . 18 October 2009 . 1749-4885 . 10.1038/nphoton.2009.187 . 654–657. 2009NaPho...3..654K .
• Watson . Mark D. . Fechtenkötter . Andreas . Müllen . Klaus . Big Is Beautiful−"Aromaticity" Revisited from the Viewpoint of Macromolecular and Supramolecular Benzene Chemistry . Chemical Reviews . American Chemical Society (ACS) . 101 . 5 . 20 April 2001 . 0009-2665 . 10.1021/cr990322p . 1267–1300. 11710221 .
• Liu . Ruili . Wu . Dongqing . Feng . Xinliang . Müllen . Klaus . Nitrogen-Doped Ordered Mesoporous Graphitic Arrays with High Electrocatalytic Activity for Oxygen Reduction . Angewandte Chemie International Edition . Wiley . 49 . 14 . 29 March 2010 . 1433-7851 . 10.1002/anie.200907289 . 2565–2569. 20217877 .

External links

• Web site: Emeriti-Forschungsgruppe Klaus Müllen . Max-Planck-Institut für Polymerforschung . 5 October 2022 . de . . 18 November 2022.
• Web site: Müllen, Klaus . Max-Planck-Gesellschaft . 26 September 2022 . . 18 November 2022.
• Web site: Mainz . Johannes Gutenberg-Unversität . Prof. Dr. Klaus Müllen . Gutenberg Forschungskolleg . de . 18 November 2022.

Notes and References

1. Iyer . Vivekanantan S. . Wehmeier . Mike . Brand . J. Diedrich . Keegstra . Menno A. . Müllen . Klaus . From Hexa-peri-hexabenzocoronene to"Superacenes" . Angewandte Chemie International Edition in English . Wiley . 36 . 15 . 18 August 1997 . 0570-0833 . 10.1002/anie.199716041 . 1604–1607.
2. Hexakis(n-dodecyl)-peri-hexabenzocoronene, dodecyl-substituted hexabenzocoronene.
3. Tsao . H. N. . Räder . H. J. . Pisula . W. . Rouhanipour . A. . Müllen . K. . Novel organic semiconductors and processing techniques for organic field-effect transistors . Physica Status Solidi A . Wiley . 205 . 3 . 2008 . 1862-6300 . 10.1002/pssa.200723401 . 421–429. 2008PSSAR.205..421T . 95330169 .
4. http://www.uni-mainz.de/presse/20443_ENG_HTML.php GRC Fellow Klaus Müllen receives Hermann Staudinger Award 2016
5. Räder . Hans Joachim . Rouhanipour . Ali . Talarico . Anna Maria . Palermo . Vincenzo . Samorì . Paolo . Müllen . Klaus . Processing of giant graphene molecules by soft-landing mass spectrometry . Nature Materials . Springer Science and Business Media LLC . 5 . 4 . 12 March 2006 . 1476-1122 . 10.1038/nmat1597 . 276–280. 16532002 . 2006NatMa...5..276R . 25023497 .
6. https://www.ae-info.org/ae/Member/M%C3%BCllen_Klaus Academy of Europe Müllen Klaus
7. Web site: Klaus Müllen erhält den Hamburger Wissenschaftspreis 2017 . Nationale Akademie der Wissenschaften Leopoldina . 25 September 2021 . de . 18 November 2022 . 18 November 2022 . https://web.archive.org/web/20221118183313/https://www.leopoldina.org/mitglieder/mitglieder-im-fokus/klaus-muellen-erhaelt-den-hamburger-wissenschaftspreis-2017/ . live .
8. Web site: Hamburg Science Award 2017 goes to Klaus Müllen and Xinliang Feng . cfaed . 26 June 2017 . 18 November 2022 . 29 September 2022 . https://web.archive.org/web/20220929213001/https://cfaed.tu-dresden.de/press-releases-201/hamburg-science-award-2017-goes-to-klaus-muellen-and-xinliang-feng . live .
9. Web site: 中国新闻网 . 2023-11-23 . m.chinanews.com.