A5079384361- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Supramolecular Chemistry and Complexes
- Molecular Sensors and Ion Detection
- Metal-Organic Frameworks: Synthesis and Applications
- Mass Spectrometry Techniques and Applications
- Magnetism in coordination complexes
- Luminescence and Fluorescent Materials
- Metal complexes synthesis and properties
- Supramolecular Self-Assembly in Materials
- Chemical Synthesis and Reactions
- Chemical Synthesis and Analysis
- Nanocluster Synthesis and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Photoreceptor and optogenetics research
- Analytical Chemistry and Chromatography
- Crystal structures of chemical compounds
- Synthesis and Catalytic Reactions
- Photochromic and Fluorescence Chemistry
- Fluorine in Organic Chemistry
- Inorganic Fluorides and Related Compounds
- Porphyrin and Phthalocyanine Chemistry
- Advanced NMR Techniques and Applications
- Analytical Chemistry and Sensors
University of Jyväskylä
2015-2024
Center for NanoScience
2014-2019
Centre de Nanosciences et de Nanotechnologies
2017
University of Eastern Finland
2008-2012
University of Parma
2011
Finland University
2011
Tripodal N-donor ligands are used to form halogen-bonded assemblies via structurally analogous Ag+ -complexes. Selective formation of discrete tetrameric I6 L4 and dimeric I3 L2 halonium cages, wherein multiple [N⋅⋅⋅I+ ⋅⋅⋅N] halogen bonds in concert, can be achieved by using sterically rigidified cationic tris(1-methyl-1-azonia-4-azabicyclo[2.2.2]octane)-mesitylene ligand, L1(PF6 )3 , flexible ligand 1,3,5-tris(imidazole-1-ylmethyl)-2,4,6-trimethylbenzene, L2, respectively. The iodonium L14...
1-2-3 gel! Subcomponent self-assembly is introduced as a new design route towards multistimuli-responsive metallogels. It offers rapid and facile access to supramolecular gels allows smart materials with diverse functional structural properties by simply exchanging one (or more) of the components. Herein, exchange metal ions emphasized (see scheme).
Chiral (<italic>all-R</italic>)-cyclohexanohemicucurbit[8]uril binds anions in a 1 : ratio pure methanol like molecular Pac-Man™ with remarkable selectivity based on the size, shape and charge distribution of anion.
Phytochrome proteins regulate many photoresponses of plants and microorganisms. Light absorption causes isomerization the biliverdin chromophore, which triggers a series structural changes to activate signaling domains protein. However, are elusive, therefore molecular mechanism signal transduction remains poorly understood. Here, we apply two-color step-scan infrared spectroscopy bacteriophytochrome from Deinococcus radiodurans. We show by recordings in H2O D2O that hydrogen bonds D-ring...
High-resolution electrospray ionization ion mobility mass spectrometry has revealed a gas-phase isomer of the ubiquitous, extremely well-studied Au25(SR)18 cluster both in anionic and cationic form. The relative abundance isomeric structures can be controlled by in-source activation. measured collision cross section new agrees well with recent theoretical prediction (Matus, M. F.; et al. Chem. Commun. 2020, 56, 8087) corresponding to Au25(SR)18– that is energetically close topologically...
Phosphonate cavitands are an emerging class of synthetic receptors for supramolecular sensing. The molecular recognition properties the third-generation tetraphosphonate toward alcohols and water at gas-solid interface have been evaluated by means three complementary techniques compared to those parent mono- diphosphonate cavitands. combined use ESI-MS X-ray crystallography defined precisely host-guest association in terms type, number, strength, geometry interactions. Quartz crystal...
A new fluorescent terpyridyl-diphenylacetylene hybrid fluorophore 4'-[4-{(4-methoxyphenyl)ethynyl}phenyl]-2,2':6',2''-terpyridine, L, was synthesized via Sonogashira cross-coupling of 4'-(4-bromophenyl)-2,2':6',2''-terpyridine and 4-ethynylanisole in the presence Pd(PPh3)4/CuI as a catalyst. The solid state structure L shows trans arrangement pyridine nitrogen atoms along interannular bond terpyridine domain. Five transition metal complexes {[FeL2](CF3SO3)2 (1), [ZnL2](ClO4)2 (2),...
A thorough characterization of unusually strong I<sup>+</sup>–S halogen bonds indicates that bonding is not merely an electrostatic contact but also has a coordinative nature, thus expanding the scope bonding.
Abstract Large, non‐symmetrical, inherently chiral bispyridyl ligand L derived from natural ursodeoxycholic bile acid was used for square–planar coordination of tetravalent Pd II , yielding the cationic single enantiomer superchiral complex 1 3 6 containing 60 well‐defined centers in its flower‐like structure. Complex can readily be transformed by addition chloride into a smaller enantiomerically pure cyclic trimer 2 Cl 30 centers. This transformation is reversible and restored silver...
Three new organometallic trimethylplatinum(IV) iodide complexes of 2,2′:6′,2″-terpyridines have been synthesized and characterized by 1H NMR spectroscopy, mass spectrometry, elemental analysis, single crystal X-ray diffraction analysis. The structures PtMe3I(L) 1–3 {L for 1 = 4′-chloro-2,2′:6′,2″-terpyridine, 2 4′-(4-cyanophenyl)-2,2′:6′,2″-terpyridine, 3 4′-(4-tolyl)-2,2′:6′,2″-terpyridine} reveal distorted octahedral coordination geometry the platinum(IV) metal centers with bidentate...
The location of the Pd atoms in Pd<sub>2</sub>Au<sub>36</sub>(SC<sub>2</sub>H<sub>4</sub>Ph)<sub>24</sub>, is studied both experimentally and theoretically.
Guest-switchable crystals: A solid-state guest exchange of the tetraphosphonate cavitand Tiiii[H,CH3,Ph] as host promotes single-crystal-to-single-crystal transformations (see graphic). The strong preference for methanol over water is observed in all three phases (gas, liquid, solid), thus demonstrating fundamental role played by preorganized cavity through synergistic H-bonds and CH⋅⋅⋅π interactions. Detailed facts importance to specialist readers are published "Supporting Information"....
Although various complex, bulky ligands have been used to functionalize plasmonic gold nanoparticles, introducing them small, atomically precise clusters is not trivial. Here, we demonstrate a simple one-pot procedure synthesize fluorescent magic number Au25 carrying controlled amounts of calix[4]arene functionalities. These are obtained from synthesis feed containing binary mixtures tetrathiolated and 1-butanethiol. By systematic variation the molar ratio ligands, one eight calixarene...
The role of noncovalent gold–hydrogen and aurophilic interactions in the formation extended molecular systems gold complexes was studied. Three new compounds with a heterocyclic thione ligand N-methylbenzothiazole-2-thione (mbtt), namely, [AuCl(mbtt)] (1), [AuBr(mbtt)] (2), [Au(mbtt)2][AuI2]1–n[I3]n (3), were synthesized characterized. halide had considerable effect on complex structures thus to contacts. Intermolecular C–H···Au Au···Au contacts dominant 1–3 determining supramolecular arrays...
A simple 18-crown-6-based bis-urea receptor R(1) was synthesized in three steps from a commercial starting material. The receptor's behavior toward anions, cations, and ion pairs studied solution with (1)H NMR, solid state single-crystal X-ray diffraction, gas phase mass spectrometry. In 4:1 CDCl3/dimethyl sulfoxide the binding preference of halide anions is I(-) < Br(-) Cl(-) following trend hydrogen-bonding acceptor ability anions. shows remarkable positive cooperativity Cl(-), Br(-), when...
Abstract A highly electron‐deficient C 3 ‐symmetric tris(bipyridyl) ligand was prepared in four steps and used for the coordination of Fe(OTf) 2 , thereby resulting homochiral assembly a new family robust tetrahedral M 4 L cages. This T‐symmetric cage containing relatively large cavity 330 Å is capable encapsulating an anionic guest, as determined by mass spectrometry, 19 F NMR spectroscopy, finally shown from its crystal structure. Moreover, crystallization CH CN led to crystals both (ΔΔΔΔ...
Thermally stable photoswitches that are driven with low-energy light rare, yet crucial for extending the applicability of photoresponsive molecules and materials towards, e.g., living systems. Combined ortho-fluorination -amination couples high visible absorptivity o-aminoazobenzenes extraordinary bistability o-fluoroazobenzenes. Herein, we report a library easily accessible o-aminofluoroazobenzenes establish structure-property relationships regarding spectral qualities, isomerization...
Cells use glycolytic intermediates for anabolism, e.g., via the serine synthesis and pentose phosphate pathways. However, we still understand poorly how these metabolic pathways contribute to skeletal muscle cell biomass generation. The first aim of this study was therefore identify enzymes that limit protein synthesis, myotube size, proliferation in cells. We inhibited key glycolysis, pathway, pathway evaluate their importance C2C12 synthesis. Based on results screen, then focused enzyme...
New 1-2 nm macrocyclic iodine(I) complexes prepared VIA a simple ligand exchange reaction manifest rigid 0.5-1 cavities that bind the hexafluorophosphate anion in gas phase. The size of and electrostatic interactions with cations influence binding properties these complexes.
H/D and guest-exchange ion–molecule reactions have been used as a new tool to elucidate the operation of multiple hydrogen bonding in gas-phase complexes formed between phosphonate cavitands ethyl-substituted ammonium ions.
The noncovalent complexation of tetraethyl and tetraphenyl resorcinarenes with mono-, di-, oligosaccharides was studied negative-polarization electrospray ionization quadrupole ion trap Fourier-transform cyclotron resonance mass-spectrometric analysis. saccharides formed 1:1 complexes deprotonated resorcinarenes, which exhibited clear size structure selectivity in their complexation. In the case monosaccharides, hexoses much more abundant kinetically stable than pentoses or deoxyhexoses. A...