@article{AlrefaiMondalWrucketal.2019,
  author    = {Alrefai, Anas and Mondal, Suvendu Sekhar and Wruck, Alexander and Kelling, Alexandra and Schilde, Uwe and Brandt, Philipp and Janiak, Christoph and Schoenfeld, Sophie and Weber, Birgit and Rybakowski, Lawrence and Herrman, Carmen and Brennenstuhl, Katlen and Eidner, Sascha and Kumke, Michael Uwe and Behrens, Karsten and G{\"u}nter, Christina and M{\"u}ller, Holger and Holdt, Hans-J{\"u}rgen},
  title     = {Hydrogen-bonded supramolecular metal-imidazolate frameworks: gas sorption, magnetic and UV/Vis spectroscopic properties},
  series = {Journal of Inclusion Phenomena and Macrocyclic Chemistry},
  volume    = {94},
  journal   = {Journal of Inclusion Phenomena and Macrocyclic Chemistry},
  number    = {3-4},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {1388-3127},
  doi       = {10.1007/s10847-019-00926-6},
  pages     = {155 -- 165},
  year      = {2019},
  abstract  = {By varying reaction parameters for the syntheses of the hydrogen-bonded metal-imidazolate frameworks (HIF) HIF-1 and HIF-2 (featuring 14 Zn and 14 Co atoms, respectively) to increase their yields and crystallinity, we found that HIF-1 is generated in two different frameworks, named as HIF-1a and HIF-1b. HIF-1b is isostructural to HIF-2. We determined the gas sorption and magnetic properties of HIF-2. In comparison to HIF-1a (Brunauer-Emmett-Teller (BET) surface area of 471m(2) g(-1)), HIF-2 possesses overall very low gas sorption uptake capacities [BET(CO2) surface area=85m(2) g(-1)]. Variable temperature magnetic susceptibility measurement of HIF-2 showed antiferromagnetic exchange interactions between the cobalt(II) high-spin centres at lower temperature. Theoretical analysis by density functional theory confirmed this finding. The UV/Vis-reflection spectra of HIF-1 (mixture of HIF-1a and b), HIF-2 and HIF-3 (with 14 Cd atoms) were measured and showed a characteristic absorption band centered at 340nm, which was indicative for differences in the imidazolate framework.},
  language  = {en}
}
@article{AloniPerovicWeitmanetal.2019,
  author    = {Aloni, Sapir Shekef and Perovic, Milena and Weitman, Michal and Cohen, Reut and Oschatz, Martin and Mastai, Yitzhak},
  title     = {Amino acid-based ionic liquids as precursors for the synthesis of chiral nanoporous carbons},
  series = {Nanoscale Advances},
  volume    = {1},
  journal   = {Nanoscale Advances},
  number    = {12},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {2516-0230},
  doi       = {10.1039/c9na00520j},
  pages     = {4981 -- 4988},
  year      = {2019},
  abstract  = {The synthesis of chiral nanoporous carbons based on chiral ionic liquids (CILs) of amino acids as precursors is described. Such unique precursors for the carbonization of CILs yield chiral carbonaceous materials with high surface area (approximate to 620 m(2) g(-1)). The enantioselectivities of the porous carbons are examined by advanced techniques such as selective adsorption of enantiomers using cyclic voltammetry, isothermal titration calorimetry, and mass spectrometry. These techniques demonstrate the chiral nature and high enantioselectivity of the chiral carbon materials. Overall, we believe that the novel approach presented here can contribute significantly to the development of new chiral carbon materials that will find important applications in chiral chemistry, such as in chiral catalysis and separation and in chiral sensors. From a scientific point of view, the approach and results reported here can significantly deepen our understanding of chirality at the nanoscale and of the structure and nature of chiral nonporous materials and surfaces.},
  language  = {en}
}
@article{AliHomannKreiseletal.2012,
  author    = {Ali, Mostafa and Homann, Thomas and Kreisel, Janka and Khalil, Mahmoud and Puhlmann, Ralf and Kruse, Hans-Peter and Rawel, Harshadrai Manilal},
  title     = {Characterization and modeling of the interactions between coffee storage proteins and phenolic compounds},
  series = {Journal of agricultural and food chemistry : a publication of the American Chemical Society},
  volume    = {60},
  journal   = {Journal of agricultural and food chemistry : a publication of the American Chemical Society},
  number    = {46},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {0021-8561},
  doi       = {10.1021/jf303372a},
  pages     = {11601 -- 11608},
  year      = {2012},
  abstract  = {This study addresses the interactions of coffee storage proteins with coffee-specific phenolic compounds. Protein profiles, of Coffea arabica and Coffea canephora (var robusta) were compared. Major Phenolic compounds were extracted and analyzed with appropriate methods. The polyphenol-protein interactions during protein extraction have been addressed by different analytical setups [reversed-phase high-performance liquid chromatography (RP-HPLC), sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), matrix-assisted laser desorption ionization-time of flight-mass spectrometry (MALDI-TOF-MS), and Trolox equivalent antioxidant capacity (TEAC) assays], with focus directed toward identification of covalent adduct formation. The results indicate that C. arabica proteins are more susceptible to these interactions and the polyphenol oxidase activity seems to be a crucial factor for the formation of these addition products. A tentative allocation of the modification type and site in the protein has been attempted. Thus, the first available in silico modeling of modified coffee proteins is reported. The extent of these modifications may contribute to the structure and function of "coffee melanoidins" and are discussed in the context of coffee flavor formation.},
  language  = {en}
}
@article{AliHomannKhaliletal.2013,
  author    = {Ali, Mostafa and Homann, Thomas and Khalil, Mahmoud and Kruse, Hans-Peter and Rawel, Harshadrai Manilal},
  title     = {Milk whey protein modification by coffee-specific phenolics effect on structural and functional properties},
  series = {Journal of agricultural and food chemistry : a publication of the American Chemical Society},
  volume    = {61},
  journal   = {Journal of agricultural and food chemistry : a publication of the American Chemical Society},
  number    = {28},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {0021-8561},
  doi       = {10.1021/jf402221m},
  pages     = {6911 -- 6920},
  year      = {2013},
  abstract  = {A suitable vehicle for integration of bioactive plant constituents is proposed. It involves modification of proteins using phenolics and applying these for protection of labile constituents. It dissects the noncovalent and covalent interactions of beta-lactoglobulin with coffee-specific phenolics. Alkaline and polyphenol oxidase modulated covalent reactions were compared. Tryptic digestion combined with MALDI-TOF-MS provided tentative allocation of the modification type and site in the protein, and an in silico modeling of modified beta-lactoglobulin is proposed. The modification delivers proteins with enhanced antioxidative properties. Changed structural properties and differences in solubility, surface hydrophobicity, and emulsification were observed. The polyphenol oxidase modulated reaction provides a modified beta-lactoglobulin with a high antioxidative power, is thermally more stable, requires less energy to unfold, and, when emulsified with lutein esters, exhibits their higher stability against UV light. Thus, adaptation of this modification provides an innovative approach for functionalizing proteins and their uses in the food industry.},
  language  = {en}
}
@article{AlarconAlderetePeteretal.1998,
  author    = {Alarcon, Julio and Alderete, Joel B. and Peter, Martin G. and Becerra, Juan J. and Silva, M.},
  title     = {Study on synthesis of 3 alpha,4 alpha-dihydroxy-dihydro-beta-agarofuran},
  year      = {1998},
  language  = {en}
}
@article{AlarconAldereteAguilaetal.2005,
  author    = {Alarcon, Julio and Alderete, Joel B. and Aguila, Sergio and Peter, Martin G.},
  title     = {Regio and stereoselective hydroxylation of alpha-agarofuran by biotransformation of rhizopus nigricans},
  year      = {2005},
  abstract  = {A new synthesis of 9 alpha-hydroxy-alpha-agarofuran (6 alpha) is described, using a microbiological hydroxylation alpha-agarofuran (5) as the key reaction. The stereochemistry of the biohydroxylation was determined on the basis of a NOESY-experiment and GIAO calculations at the B3LYP/cc-pVDZ level. A strong gamma-effect was observed at C15 of the agarofuran ring which was correctly predicted by the GIAO-B3LYP calculations},
  language  = {en}
}
@article{AlNajiSchlaadAntonietti2020,
  author    = {Al-Naji, Majd and Schlaad, Helmut and Antonietti, Markus},
  title     = {New (and old) monomers from biorefineries to make polymer chemistry more sustainable},
  series = {Macromolecular rapid communications},
  volume    = {42},
  journal   = {Macromolecular rapid communications},
  number    = {3},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1022-1336},
  doi       = {10.1002/marc.202000485},
  pages     = {11},
  year      = {2020},
  abstract  = {This opinion article describes recent approaches to use the "biorefinery" concept to lower the carbon footprint of typical mass polymers, by replacing parts of the fossil monomers with similar or even the same monomer made from regrowing dendritic biomass. Herein, the new and green catalytic synthetic routes are for lactic acid (LA), isosorbide (IS), 2,5-furandicarboxylic acid (FDCA), and p-xylene (pXL). Furthermore, the synthesis of two unconventional lignocellulosic biomass derivable monomers, i.e., alpha-methylene-gamma-valerolactone (MeGVL) and levoglucosenol (LG), are presented. All those have the potential to enter in a cost-effective way, also the mass market and thereby recover lost areas for polymer materials. The differences of catalytic unit operations of the biorefinery are also discussed and the challenges that must be addressed along the synthesis path of each monomers.},
  language  = {en}
}
@article{AlNakeebKochovskiLietal.2019,
  author    = {Al Nakeeb, Noah and Kochovski, Zdravko and Li, Tingting and Zhang, Youjia and Lu, Yan and Schmidt, Bernhard V. K. J.},
  title     = {Poly(ethylene glycol) brush-b-poly(N-vinylpyrrolidone)-based double hydrophilic block copolymer particles crosslinked via crystalline alpha-cyclodextrin domains},
  series = {RSC Advances},
  volume    = {9},
  journal   = {RSC Advances},
  number    = {9},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {2046-2069},
  doi       = {10.1039/c8ra10672j},
  pages     = {4993 -- 5001},
  year      = {2019},
  abstract  = {Self-assembly of block copolymers is a significant area of polymer science. The self-assembly of completely water-soluble block copolymers is of particular interest, albeit a challenging task. In the present work the self-assembly of a linear-brush architecture block copolymer, namely poly(N-vinylpyrrolidone)-b-poly(oligoethylene glycol methacrylate) (PVP-b-POEGMA), in water is studied. Moreover, the assembled structures are crosslinked via alpha-CD host/guest complexation in a supramolecular way. The crosslinking shifts the equilibrium toward aggregate formation without switching off the dynamic equilibrium of double hydrophilic block copolymer (DHBC). As a consequence, the self-assembly efficiency is improved without extinguishing the unique DHBC self-assembly behavior. In addition, decrosslinking could be induced without a change in concentration by adding a competing complexation agent for alpha-CD. The self-assembly behavior was followed by DLS measurement, while the presence of the particles could be observed via cryo-TEM before and after crosslinking.},
  language  = {en}
}
@article{AkarsuGrobeNowaczyketal.2021,
  author    = {Akarsu, Pinar and Grobe, Richard and Nowaczyk, Julius and Hartlieb, Matthias and Reinicke, Stefan and B{\"o}ker, Alexander and Sperling, Marcel and Reifarth, Martin},
  title     = {Solid-phase microcontact printing for precise patterning of rough surfaces},
  series = {ACS applied polymer materials},
  volume    = {3},
  journal   = {ACS applied polymer materials},
  number    = {5},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {2637-6105},
  doi       = {10.1021/acsapm.1c00024},
  pages     = {2420 -- 2431},
  year      = {2021},
  abstract  = {We present a microcontact printing (mu CP) routine suitable to introduce defined (sub-) microscale patterns on surface substrates exhibiting a high capillary activity and receptive to a silane-based chemistry. This is achieved by transferring functional trivalent alkoxysilanes, such as (3-aminopropyl)-triethoxysilane (APTES) as a low-molecular weight ink via reversible covalent attachment to polymer brushes grafted from elastomeric polydimethylsiloxane (PDMS) stamps. The brushes consist of poly{N-[tris(hydroxymethyl)-methyl]acrylamide} (PTrisAAm) synthesized by reversible addition-fragmentation chain-transfer (RAFT)-polymerization and used for immobilization of the alkoxysilane-based ink by substituting the alkoxy moieties with polymer-bound hydroxyl groups. Upon physical contact of the silane-carrying polymers with surfaces, the conjugated silane transfers to the substrate, thus completely suppressing ink-flow and, in turn, maximizing printing accuracy even for otherwise not addressable substrate topographies. We provide a concisely conducted investigation on polymer brush formation using atomic force microscopy (AFM) and ellipsometry as well as ink immobilization utilizing two-dimensional proton nuclear Overhauser enhancement spectroscopy (H-1-H-1-NOESY-NMR). We analyze the mu CP process by printing onto Si-wafers and show how even distinctively rough surfaces can be addressed, which otherwise represent particularly challenging substrates.},
  language  = {en}
}
@article{AkampuriraAkalaDereseetal.2023,
  author    = {Akampurira, Denis and Akala, Hoseah M. and Derese, Solomon and Heydenreich, Matthias and Yenesew, Abiy},
  title     = {A new C-C linked benzophenathridine-2-quinoline dimer, and the antiplasmodial activity of alkaloids from Zanthoxylum holstzianum},
  series = {Natural product research},
  volume    = {37},
  journal   = {Natural product research},
  number    = {13},
  publisher = {Taylor \& Francis},
  address   = {London [u.a.]},
  issn      = {1478-6419},
  doi       = {10.1080/14786419.2022.2034810},
  pages     = {2161 -- 2171},
  year      = {2023},
  abstract  = {The CH2Cl2/MeOH (1:1) extract of Zanthoxylum holstzianum stem bark showed good antiplasmodial activity (IC50 2.5 +/- 0.3 and 2.6 +/- 0.3 mu g/mL against the W2 and D6 strains of Plasmodium falciparum, respectively). From the extract five benzophenanthridine alkaloids [8-acetonyldihydrochelerythrine (1), nitidine (2), dihydrochelerythine (3), norchelerythrine (5), arnottianamide (8)]; a 2-quinolone alkaloid [N-methylflindersine (4)]; a lignan [4,4 '-dihydroxy-3,3 '-dimethoxylignan-9,9 '-diyl diacetate (7)] and a dimer of a benzophenanthridine and 2-quinoline [holstzianoquinoline (6)] were isolated. The CH2Cl2/MeOH (1:1) extract of the root bark afforded 1, 3-6, 8, chelerythridimerine (9) and 9-demethyloxychelerythrine (10). Holstzianoquinoline (6) is new, and is the second dimer linked by a C-C bond of a benzophenanthridine and a 2-quinoline reported thus far. The compounds were identified based on spectroscopic evidence. Amongst five compounds (1-5) tested against two strains of P. falciparum, nitidine (IC50 0.11 +/- 0.01 mu g/mL against W2 and D6 strains) and norchelerythrine (IC50 value of 0.15 +/- 0.01 mu g/mL against D6 strain) were the most active.},
  language  = {en}
}