Publications 2020

Revealing the Wavelength Dependence of Photochemical Reactions: Cutting-Edge Research in the Teaching Lab
Sarah L. Walden, Hendrik Frisch, Barbara V. Unterreiner, Andreas-Neil Unterreiner, and Christopher Barner-Kowollik
J. Chem. Educ. (2020), 97, 2, 543-548, DOI: 10.1021/acs.jchemed.9b00752 [abstract ]

Ultrafast Intersystem Crossing in Isolated Ag29(BDT)123- Probed by Time-Resolved Pump-Probe Photoelectron Spectroscopy
Aron P. Veenstra, Laurenz Monzel, Ananya Baksi, Joseph Czekner, Sergei Lebedkin, Erik K. Schneider, Thalappil Pradeep, Andreas-Neil Unterreiner, and Manfred M. Kappes
J. Phys. Chem. Lett. (2020), 11, 7, 2675-2681, DOI: 10.1021/acs.jpclett.0c00482 [abstract ]

Temperature- and pressure-dependent kinetics of the competing C-O bond fission reactions od dimethoxymethane
Leonie Golka, Dennis Gratzfeld, Isabelle Weber, and Matthias Olzmann
Phys. Chem. Chem. Phys. (2020), 22, 5523-5530, DOI: 10.1039/d0cp00136h [abstract ] (Open Access)

Evidence for Ultrafast Formation of Tribenzoylgermyl Radicals Originating from Tetraacylgermane Photoinitiators
Philipp Jöckle, Iris Lamparth, Norbert Moszner, Christopher Barner-Kowollik, and Andreas Unterreiner
Polym. Chem. (2020), 11, 3972-3979, DOI: 10.1039/d0py00344a [abstract ]

Photoexcitation of Ge9- Clusters in THF: New Insights into the Ultrafast Relaxation Dynamics and the Influence of the Cation
Nadine Michenfelder, Christian Gienger, Melina Dilanas, Andreas Schnepf, and Andreas-Neil Unterreiner
Molecules (2020), 25(11), 2639, DOI: 10.3390/molecules25112639 [abstract ]

On the influence of water on urea condensation reactions: a theoretical study
Denis Gratzfeld, Juliane Heitkämper, Julien Debailleul, and Matthias Olzmann
Z. Phys. Chem (2020), 234(7-9), 1311-1327, DOI: 10.1515/zpch-2020-1658 [abstract ] (Open Access)

Kinetics of the Reactions of Hydroxyl Radicals with Furan and its Alkylated Derivatives 2-Methyl Furan and 2,5-Dimethyl Furan
Charlotte A. Whelan, Julia Eble, Zara S. Mir, Mark A. Blitz, Paul W. Seakins, Matthias Olzmann, and Daniel Stone
J. Phys. Chem. A (2020), 124(37), 7416-7426, DOI: 10.1021/acs.jpca.0c06321 [abstract ]

Photocycloadditions in Disparate Chemical Environments
David E. Marschner, Philipp W. Kamm, Hendrik Frisch, Andreas Unterreiner, and Christopher Barner-Kowollik
Chem. Commun. (2020), 56, 14043-14046, DOI: 10.1039/D0CC03911J [abstract ]

Directed Electron Transfer in Flavin Peptides with Oligoproline-Type Helical Conformation as Models for Flavin-Functional Proteins
Dr. Samantha Wörner, Julia Leier, Nadine C. Michenfelder, Dr. Andreas-Neil Unterreiner, and Prof. Hans-Achim Wagenknecht
Chem. Open (2020), 09, 1264-1269, DOI: 10.1002/open.202000199 [abstract ]

Publications 2019

More than Expected: Overall Initiation Efficiencies of Mono-, Bis-, and Tetraacylgermane Radical Initiators
Philipp Jöckle, Philipp W. Kamm, Iris Lamparth, Norbert Moszner, and Andreas-Neil Unterreiner, and Christopher Barner-Kowollik
Macromolecules (2019), 52(1), 281-291, DOI: 10.1021/acs.macromol.8b02404 [abstract ]

Pyrolysis of dimethoxymethane and the reaction of dimethoxymethane with H atoms: A shock-tube/ARAS/TOF-MS and modeling study
Leonie Golka, Isabelle Weber, and Matthias Olzmann
Proc. Combust. Inst. (2019), 37, 179-187, DOI: 10.1016/j.proci.2018.05.036 [abstract ]

Chasing BODIPY: Enhancement of luminescence in homoleptic bis(dipyrrinato) Zn(II) complexes utilising symmetric and unsymmetrical dipyrrins
Dmitry Tungulin, Julia Leier, Anthony B. Carter, Annie K. Powell, Rodrigo Q. Albuquerque, Andreas-Neil Unterreiner, and Claudia Bizzarri
Chem. Eur. J. (2019), 25(15), 3816-3827, DOI: 10.1002/chem.201806330 [abstract ]

Reaction of dimethoxymethane with hydroxyl radicals: An experimental kinetic study at temperatures above 296 K and pressures of 2, 5, and 10 bar
Cornelie Bänsch and Matthias Olzmann
Chem. Phys. Lett. (2019), 720, 19-24, DOI: 10.1016/j.cplett.2019.01.053 [abstract ]

Real-time observation of diarylethene-based photoswitches in a cyclic peptide environment
Caroline Schweigert, Oleg Babii, Sergii Afonin, Tim Schober, Julia Leier, Nadine Michenfelder, Igor V. Komarov, Anne Ulrich, and Andreas-Neil Unterreiner
ChemPhotoChem (2019), 3 (6), 403-410, DOI: 10.1002/cptc.201900005 [abstract ] [Cover Profile ]

Thermal decomposition of CH3I revisited: Consistent calibration of I-atom concentrations behind shock waves with dual I-/H-ARAS
Isabelle Weber, and Matthias Olzmann
Int. J. Chem. Kin. (2019), 51 (5), 367-376, DOI: 10.1002/kin.21260 [abstract ]

The influence of the FeCp(CO)2+ moiety on the dynamics of the metalloid [Ge9(Si(SiMe3)3)3] - cluster in thf: Synthesis and characterization by time-resolved absorption spectroscopy
Nadine C. Michenfelder, Christian Gienger, Andreas Schnepf, and Andreas-Neil Unterreiner
Dalton Transactions (2019), 48, 15577-15582, DOI: 10.1039/C9DT02091H [abstract ]

Pyrolysis of Furan and Its Methylated Derivatives: A shock-tube/TOF-MS and Modeling Study
Lena Weiser, Isabelle Weber, and Matthias Olzmann
J. Phys. Chem. A (2019), 123, 9893-9904, DOI: 10.1021/acs.jpca.9b06967 [abstract ]

Publications 2018

Significant fluorescence enhancement of N,N-dimethylaminobenzophenone after embedding as C-nucleoside in DNA
Caroline Schweigert, Nadine Gaß, Hans-Achim Wagenknecht, and Andreas-Neil Unterreiner
ChemPhotoChem (2018), 2(1), 12-17, DOI: 10.1002/cptc.201700183 [abstract ]

A Priori Prediction of Mass Spectrometric Product Patterns of Photoinitiated Polymerizations
Philipp Jöckle, Judith Radebner, Michael Haas, Iris Lamparth, Hararld Stueger, Norbert Moszner, Andreas-Neil Unterreiner, and Christopher Barner-Kowollik
ACS Macro Lett. (2018), 7, 132-136, DOI: 10.1021/acsmacrolett.7b00907 [abstract ]

Ultrafast stimulated emission of nitrophenolates in organic and aqueous solutions
Nadine C. Michenfelder, Hanna E. Ernst, Caroline Schweigert, Matthias Olzmann, and Andreas-Neil Unterreiner
Phys. Chem. Chem. Phys. (2018), 20, 10713-10720, DOI: 10.1039/C7CP07774B [abstract ]

Simulation of a Shock Tube with a Small Exit Nozzle
Yigang Luan, Matthias Olzmann, and Franco Magagnato
J. Therm. Sci. (2018), 27, 34-38, DOI: 10.1007/s11630-018-0981-8 [abstract ]

Quasi-Spectral Method for the Solution of the Master Equation for Unimolecular Reaction Systems
Andrey Koksharov, Chunkan Yu, Viatcheslav Bykov, Ulrich Maas, Mark Pfeifle, and Matthias Olzmann
Int. J. Chem. Kinet. (2018), 50, 357-369, DOI: 10.1002/kin.21165 [abstract ]

A reduced model for the evaporation and decomposition of urea-water solution droplets
M. Stein, V. Bykov, A. Bertótiné Abai, C. Janzer, U. Maas, O. Deutschmann, and M. Olzmann
Int. J. Heat Fluid Flow (2018), 70, 216-225, DOI: 10.1016/j.ijheatfluidflow.2018.02.005 [abstract ]

Installing Lactone Chain Termini During Photoinduced Polymerization
Andrea Lauer, Jan Steinkönig, Philipp Jöckle, Anne-Marie Kelterer, Andreas-Neil Unterreiner, and Christopher Barner-Kowollik
Polym. Chem. (2018), 9, 3336-3341, DOI: 10.1039/C8PY00457A [abstract ]

Kinetics in the real world: linking molecules, processes, and systems
Katharina Kohse-Höinghaus, Jürgen Troe, Jens-Uwe Grabow, Matthias Olzmann, Gernot Friedrichs, and Klaus-Dieter Hungenberg
Phys. Chem. Chem. Phys (2018), 20, 10561-10568, DOI: 10.1039/C8CP90054J [abstract ]

High-accuracy extrapolated ab initio thermochemistry of the NCN radical
Michael E. Harding, and Matthias Olzmann
Chem. Phys. Lett. (2018), 706, 613-616, DOI: 10.1016/j.cplett.2018.06.047 [abstract ]

H-Atom-Forming Reaction Pathways in the Pyrolysis of Furan, 2-Methylfuran, and 2,5-Dimethylfuran: A shock-Tube and Modeling Study
Isabelle Weber, Philipp Friese, and Matthias Olzmann
J. Phys. Chem. (2018), 122(32), 6500-6508, DOI: 10.1021/acs.jpca.8b05346 [abstract ]

Phenantroline-A Versatile Ligand for Advanced Functional Polymeric Materials
Hannah Rothfuss, Nicolai Knoefel, Pavleta Tzvetkova, Nadine Michenfelder, Sergej Baraban, Andreas-Neil Unterreiner, Peter Roesky, and Christopher Barner-Kowollik
Chem. Eur. J. (2018), 24(66), 17475-17486, DOI: 10.1002/chem.201803692 [abstract ]

Dimolybdenum Paddlewheel as Scaffold for Heteromultimetallic Complexes: Synthesis and Photophysical Properties
Nicolai D. Knöfel, Caroline Schweigert, Thomas J. Feuerstein, Christoph Schoo, Niklas Reinfandt, Andreas-Neil Unterreiner, and Peter W. Roesky
Inorg. Chem. (2018), 57(15), 9364-9375, DOI: 10.1021/acs.inorgchem.8b01334

Publications 2017

Formation of engine internal NO2: Measures to control the NO2/NOx ratio for enhanced exhaust after treatment
Michael Rößler, Amin Velji, Corina Janzer, Thomas Koch, and Matthias Olzmann
SAE Int. J. Engines (2017), 10, 1880-1893, DOI: 10.4271/2017-01-1017 [abstract ]

endo-Cyclization of unsaturated RO2 radicals from the gas-phase ozonolysis of cyclohexadienes
Stephanie Richters, Mark Pfeifle, Matthias Olzmann, and Torsten Berndt
Chem. Commun. (2017), 53, 4132-4135, DOI: 10.1039/c7cc01350g [abstract ]

Thermal decomposition of propene: A shock-tube/H-ARAS and modeling study
Isabelle Weber, Leonie Golka, and Matthias Olzmann
Proc. Combust. Inst (2017), 36, 299-306, DOI: 10.1016/j.proci.2016.06.091 [abstract ]

Gas-phase standard enthalpies of formation of urea-derived compounds: A quantum-chemical study
Dennis Gratzfeld and Matthias Olzmann
Chem. Phys. Lett. (2017), 679, 219-224, DOI: 10.1016/j.cplett.2017.05.006 [abstract ]

Low-Temperature Autoignition of Diethyl Ether/O2 Mixtures: Mechanistic Considerations and Kinetic Modeling
Julia Eble, Johannes Kiecherer, and Matthias Olzmann
Z. Phys. Chem. (2017), 231, 1603-1623, DOI: 10.1515/zpch-2016-0959 [abstract ]

Wirkmechanismen der dieselmotorischen NO2-Bildung/Mechanisms of the NO2 Formation in Diesel Engines
Michael Rößler, Thomas Koch, Corina Janzer, and Matthias Olzmann
MTZ Motortech. Z. (2017), 78, 72-78, DOI: 10.1007/s35146-017-0055-6 [abstract ] (Deutsch)
MTZ Worldw. (2017), 78, 70-75,  DOI: 10.1007/s38313-017-0057-2 [abstract ] (Englisch)

Exploring the chemical kinetics of partially oxidized intermediates by combining experiments, theory, and kinetic modeling
Karlheinz Hoyermann, Fabian Mauß, Matthias Olzmann, Oliver Welz, and Thomas Zeuch
Phys. Chem. Chem. Phys. (2017), 19, 18128-18146, DOI: 10.1039/c7cp02759a [abstract ]

An In-Depth Mechanistic Investigation of the Radical Initiation Behavior of Monoacylgermanes
Philipp Jöckle, Caroline Schweigert, Iris Lamparth, Norbert Moszner, Andreas-Neil Unterreiner, and Christopher Barner-Kowollik
Macromolecules (2017), 50(22), 8894-8906, DOI: 10.1021/acs.macromol.7b01721 [abstract ]

Publications 2016

Toward a Quantitative Description of Radical Photoinitiator Structure-Reactivity Correlations
Elena Frick, Caroline Schweigert, Benjamin B. Noble, Hanna A. Ernst, Andrea Lauer, Yu Liang, Dominik Voll, Michelle L. Coote, Andreas-Neil Unterreiner, and Christopher Barner-Kowollik
Macromolecules (2016), 49(1), 80-89, DOI: 10.1021/acs.macromol.5b02336 [abstract ]

Time-resolved photoelectron spectroscopy of a dinuclear Pt(II) complex: Tunneling autodetachment from both singlet and triplet excited states of a molecular dianion
Marc-Oliver Winghart, Ji-Ping Yang, Matthias Vonderach, Andreas-Neil Unterreiner, Dao-Ling Huang, Lai-Sheng Wang, Sebastian Kruppa, Christoph Riehn, and Manfred M. Kappes
J. Chem. Phys (2016), 144, 054305, DOI: 10.1063/1.4940795 [abstract ]

Study of Model Systems for Bilirubin and Bilin Chromophores: Determination and modification of Thermal and Photochemical Properties
Cristin García-Iriepa, Hanna A. Ernst, Yu Liang, Andreas-Neil Unterreiner, Luis Manuel Frutos, and Diego Sampedro
J. Org. Chem. (2016), 81(15), 6292-6302, DOI: 10.1021/acs.joc.6b00892 [abstract ]

Bis(mesitoyl)phosphinic acid: Photo-Triggered Release of Metaphosphorous Acid in Solution
David E. Fast, Michal Zalibera, Andrea Lauer, Anna Eibel, Caroline Schweigert, Anne-Marie Kelterer, Martin Spichty, Dmytro Neshchadin, Dominik Voll, Hanna Ernst, Yu Liang, Kurt Paul Dietliker, Andreas-Neil Unterreiner, Christopher Barner-Kowollik, Hansjörg Friedrich Grützmacher, and Georg Gescheidt
Chem. Commun. (2016), 52, 9917-9920, DOI: 10.1039/C6CC05219C [abstract ]

Photophysical Propertiesof Benzoylgermane and para-Substituted Derivatives: Substituent Effects on Electronic Transitions
Wolfram Feuerstein, Dr. Sebastian Höfener, Prof. Dr. Wim Klopper, Dr. Iris Lamparth, Prof. Dr. Norbert Moszner, Prof. Dr. Christopher Barner-Kowollik, Priv.-Doz. Dr. Andreas-Neil Unterreiner
ChemPhysChem (2016), 17(21), 3460-3469, DOI: 10.1002/cphc.201600712 [abstract ]