Jochen Campo - Personal Homepage

As an experienced Postdoctoral Researcher in the ECM (Experimental Condensed Matter) group at the University of Antwerp (UAntwerp), I am working in the fields of organic nonlinear optics (NLO) and carbon nanotubes (CNTs), and in particular on the powerful combination of the two.

In organic NLO, the interaction is studied between molecular materials and highly intense light waves, such as in focused and pulsed laser beams. Under such conditions, the well-known laws of linear optics are no longer valid, and a whole lot of new, additional processes can occur, such as second-harmonic generation (frequency-doubling), for instance converting a red laser beam into a blue one, and electro-optic effects, making NLO materials interesting for applications in optical telecommunication networks. Single-wall CNTs, which can be described as rolled-up single-atomic layers of graphite (graphene), exhibit remarkable optical and electronic properties highly dependent on the tube diameter, and are therefore promising for applications in e.g. electronics, photonics, and nanotechnology. Due to their hollow, quasi one-dimensional structure, CNTs can be used as nano-containers to align elongated and dipolar organic NLO molecules all along the same sense, resulting in nanohybrids with a huge NLO response.

I have completed two terms as a Postdoctoral Fellow of the Fund for Scientific Research - Flanders (FWO - Vlaanderen, Belgium). During the first term, I have taken the initiative to perform a one-year research visit in the group of J.W. Perry at Georgia Tech (Georgia Institute of Technology, Atlanta, USA), where I gained additional experience in a wide variety of advanced laser systems and (nonlinear) optical techniques. After my second term, I have been appointed as a Postdoctoral Research Associate at the National Institute of Standards and Technology (NIST, Gaithersburg, USA) in the group of J.A. Fagan to work on the processing, purification and preparation of CNTs and endohedrally filled hybrids thereof. Currently I got reappointed at UAntwerp to focus on the preparation, (non)linear-optical characterization and further optimization of organic (dye) molecule / CNT hybrids.

Publication List

Enhancing single-wall carbon nanotube properties through controlled endohedral filling
Jochen Campo, Yanmei Piao, Stephanie Lam, Christopher M. Stafford, Jason K. Streit, Jeffrey R. Simpson, Angela R. Hight Walker and Jeffrey A. Fagan, Nanoscale Horizons 2016, 1:317-324.
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Organic Compounds with Large and High-Contrast pH-Switchable Nonlinear Optical Response
Stein van Bezouw, Jochen Campo, Seung-Heon Lee, O-Pil Kwon, and Wim Wenseleers, Journal of Physical Chemistry C 2015, 119:21658-21663.
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Asymmetric dyes align inside carbon nanotubes to yield a large nonlinear optical response
Sofie Cambré, Jochen Campo, Charlie Beirnaert, Christof Verlackt, Pegie Cool, Wim Wenseleers, Nature Nanotechnology 2015, 10: 248–252, doi: 10.1038/NNANO.2015.1.
⤷ This work was highlighted in a Nature Nano News&Views: Nonlinear optics: Dipoles align inside a nanotube, doi: 10.1038/nnano.2015.9,
as well as a Research Highlight in Nature Physics: Aligned and polarized, doi:10.1038/nphys3283.

N-Methylquinolinium derivatives for photonic applications: Enhancement of electron-withdrawing character beyond that of the widely-used N-methylpyridinium
Jeong J.-H., Kim J.-S., Campo J., Lee S.-H., Jeon W.-Y., Wenseleers W., Jazbinsek M., Yun H., Kwon O.-P., Dyes and Pigments 2015, 113:8-17.
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Divergent Route to the Preparation of Hybrid Pt–Fe 2,4,6-Tris(4-ethynyl)phenyl-1,3,5-triazine Metallodendrimers for Nonlinear Optics
Swarup K. Maiti, Manuel G. Jardim, João Rodrigues, Kari Rissanen, Jochen Campo, and Wim Wenseleers, Organometallics 2013, 32:406-414.
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Practical Model for First Hyperpolarizability Dispersion Accounting for Both Homogeneous and Inhomogeneous Broadening Effects
Jochen Campo, Wim Wenseleers, Joel M. Hales, Nikolay S. Makarov, and Joseph W. Perry, Journal of Physical Chemistry Letters 2012, 3:2248–2252.
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Effect of alicyclic ring size on the photophysical and photochemical properties of bis(arylidene)cycloalkanone compounds
Qianli Zou, Yuxia Zhao, Nikolay S. Makarov, Jochen Campo, Hao Yuan, De-Cai Fang, Joseph W. Perry and Feipeng Wu, Physical Chemistry Chemical Physics 2012, 14:11743–11752.
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Dispersion of the Third-Order Nonlinear Optical Response of Organics Using a Few State Model
Joel Hales, Jochen Campo, Nikolay S. Makarov, Yanrong Shi, Stephen Barlow, Seth R. Marder, and Joe Perry, Conference Proceeding, Conference on Lasers and Electro-Optics (CLEO) 2012, doi: 10.1364/CLEO_AT.2012.JW4A.50.
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Rapid, broadband two-photon-excited fluorescence spectroscopy and its application to red-emitting secondary reference compounds
Nikolay S. Makarov, Jochen Campo, Joel M. Hales, and Joseph W. Perry, Optical Materials Express 2011, 1:551-563.
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Organic Materials for Zeno-Based Optical Switching
Joel M. Hales, Jonathan D. Matichak, Hsin-Chieh Lin, Yanrong Shi, Jochen Campo, Nikolay Makarov, Hyeongeu Kim, Sei-Hum Jang, Alex K-Y. Jen, Seth R. Marder, Joseph W. Perry, Conference Proceeding, Conference on Lasers and Electro-Optics (CLEO) 2011, doi: 10.1364/QELS.2011.QThB4.
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First Hyperpolarizability Dispersion of the Octupolar Molecule Crystal Violet: Multiple Resonances and Vibrational and Solvation Effects
Jochen Campo, Anna Painelli, Francesca Terenziani, Tanguy Van Regemorter, David Beljonne, Etienne Goovaerts, and Wim Wenseleers, Journal of the American Chemical Society 2010, 132:16467–16478.
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Highly sensitive setup for tunable wavelength hyper-Rayleigh scattering with parallel detection and calibration data for various solvents
Jochen Campo, Filip Desmet, Wim Wenseleers, and Etienne Goovaerts, Optics Express 2009, 17:4587-4604.
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Accurate Determination and Modeling of the Dispersion of the First Hyperpolarizability of an Efficient Zwitterionic Nonlinear Optical Chromophore by Tunable Wavelength Hyper-Rayleigh Scattering
Jochen Campo, Wim Wenseleers, Etienne Goovaerts, Marek Szablewski, and Graham Cross, Journal of Physical Chemistry C 2008, 112:287-296.
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Functionalized Picolinium Quinodimethane Chromophores for Electro-Optics: Synthesis, Aggregation Behavior, and Nonlinear Optical Properties
Ying Xiong, Hongding Tang, Jidong Zhang, Zhi Yuan Wang, Jochen Campo, Wim Wenseleers, and Etienne Goovaerts, Chemistry of Materials 2008, 20:7465-7473.
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Compromise between conjugation length and charge-transfer in nonlinear optical η5-monocyclopentadienyliron(II) complexes with substituted oligo-thiophene nitrile ligands: Synthesis, electrochemical studies and first hyperpolarizabilities
 Maria Helena Garcia, Paulo J. Mendes, Maria Paula Robalo, Alberto Romão Dias, Jochen Campo, Wim Wenseleers, and Etienne Goovaerts, Journal of Organometallic Chemistry 2007, 692:3027-3041.
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Synthesis and Properties of Zwitterionic Nonlinear Optical Chromophores with Large Hyperpolarizability for Poled Polymer Applications
Andrew M. R. Beaudin, Naiheng Song, Yaowen Bai, Liqui Men, Jian Ping Gao, Zhi Yuan Wang, Marek Szablewski, Graham Cross, Wim Wenseleers, Jochen Campo, and Etienne Goovaerts, Chemistry of Materials 2006, 18:1079-1084.
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Synthesis, characterisation and molecular hyperpolarisabilities of pseudo-octahedral hydrido(nitrile)iron(II) complexes for nonlinear optics: X-ray structure of [Fe(H)(dppe)2(4-NCC6H4NO2)][PF6]·CH2Cl2
Maria Paula Robalo, António P. S. Teixeira, Maria Helena Garcia, M. Fátima Minas da Piedade, M. Teresa Duarte, Alberto Romão Dias, Jochen Campo, Wim Wenseleers, and Etienne Goovaerts, European Journal of Inorganic Chemistry 2006, 11:2175-2185.
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PhD Thesis

Accurate Measurement and Modeling of Wavelength Dependent Hyper-Rayleigh Scattering by Organic and Organometallic Molecules for Nonlinear Optical Applications
Supervisor: Prof. Dr. E. Goovaerts
University of Antwerp, 2008
UMI Order Number: 3318992 (ISBN 978-0-549-68899-0)

Master's Thesis

Meerkanaalsdetectie van Hyper-Rayleighverstrooiing en Toepassing op Organometaalcomplexen
(Parallel Detection of Hyper-Rayleigh Scattering and Application to Organometallic Complexes)
Supervisor: Prof. Dr. E. Goovaerts
University of Antwerp, 2003