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Thomas Niemann

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Articles 19
Citations 140
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Recent Articles
1.
Busch J, Niemann T, Neumann J, Stange P, Gartner S, Youngs T, et al.
Chemphyschem . 2023 Apr; 24(12):e202300031. PMID: 37002728
Defects fundamentally govern the properties of all real materials. Correlating molecular defects to macroscopic quantities remains a challenge, particularly in the liquid phase. Herein, we report the influence of hydrogen...
2.
Al Sheakh L, Niemann T, Villinger A, Stange P, Zaitsau D, Strate A, et al.
Chemphyschem . 2021 Jul; 22(18):1850-1856. PMID: 34241946
The paradigm of supramolecular chemistry relies on the delicate balance of noncovalent forces. Here we present a systematic approach for controlling the structural versatility of halide salts by the nature...
3.
Khudozhitkov A, Niemann T, Stange P, Donoshita M, Stepanov A, Kitagawa H, et al.
J Phys Chem Lett . 2020 Jul; 11(15):6000-6006. PMID: 32640795
We measured the deuteron quadrupole coupling constants (DQCCs) for hydroxy-functionalized ionic liquids (ILs) with varying alkyl chain length over the temperature range between 60 and 200 K by means of...
4.
Li H, Niemann T, Ludwig R, Atkin R
J Phys Chem Lett . 2020 Apr; 11(10):3905-3910. PMID: 32338913
Atomic force microscopy has been used to measure the lubricity of a series of ionic liquids (ILs) at mica surfaces in the boundary friction regime. A previously unreported cation bilayer...
5.
Strate A, Neumann J, Niemann T, Stange P, Khudozhitkov A, Stepanov A, et al.
Phys Chem Chem Phys . 2020 Mar; 22(13):6861-6867. PMID: 32202267
In hydroxy-functionalized ionic liquids, two types of hydrogen bonding coexist: the conventional H-bonds between cation and anion (c-a) and those between cation and cation (c-c), although the interaction between like-charged...
6.
Niemann T, Zaitsau D, Strate A, Stange P, Ludwig R
Phys Chem Chem Phys . 2020 Jan; 22(5):2763-2774. PMID: 31951236
We provide comprehensive understanding of "like-likes-like" charge attraction in hydroxy-functionalized ionic liquids (ILs) by means of infrared spectroscopy (IR), quantum chemistry and differential scanning calorimetry (DSC). We show that hydrogen...
7.
Zeng H, Menges F, Niemann T, Strate A, Ludwig R, Johnson M
J Phys Chem Lett . 2020 Jan; 11(3):683-688. PMID: 31899639
Hydroxy functionalization of cations in ionic liquids (ILs) can lead to formation of contacts between their OH groups [so-called (c-c) interactions]. One class of these linkages involves cooperatively enhanced hydrogen...
8.
Niemann T, Li H, Warr G, Ludwig R, Atkin R
J Phys Chem Lett . 2019 Nov; 10(23):7368-7373. PMID: 31713427
Ionic liquids (ILs) have attracted increasing interest in science and technology because of their remarkable properties, which can be tuned via varying ion structures to control the relative strengths of...
9.
Khudozhitkov A, Neumann J, Niemann T, Zaitsau D, Stange P, Paschek D, et al.
Angew Chem Int Ed Engl . 2019 Oct; 58(49):17863-17871. PMID: 31588622
We present deuteron quadrupole coupling constants (DQCC) for hydroxyl-functionalized ionic liquids (ILs) in the crystalline or glassy states characterizing two types of hydrogen bonding: The regular Coulomb-enhanced hydrogen bonds between...
10.
Zaitsau D, Neumann J, Niemann T, Strate A, Paschek D, Verevkin S, et al.
Phys Chem Chem Phys . 2019 Sep; 21(36):20308-20314. PMID: 31495864
The enthalpy of vaporization is mainly the amount of the energy needed for transferring quantities from the liquid into the gas phase. It simply describes the energy required to overcome...