Refine
Has Fulltext
- yes (41)
Is part of the Bibliography
- yes (41)
Document Type
- Journal article (33)
- Preprint (8)
Keywords
- boron (14)
- diborenes (7)
- Boron (5)
- carbenes (4)
- density functional calculations (4)
- inorganic chemistry (4)
- luminescence (4)
- radical (4)
- singlet oxygen (3)
- structure elucidation (3)
- Aromaticity (2)
- BN compounds (2)
- Biradicals (2)
- Biradikale (2)
- Bor (2)
- Cycloaddition (2)
- Diborane (2)
- EPR spectroscopy (2)
- Multiple bonds (2)
- N-heterocyclic carbenes (2)
- aromaticity (2)
- boranes (2)
- borylation (2)
- conjugation (2)
- diradicals (2)
- fluorescence (2)
- heterocycles (2)
- one-electron oxidation (2)
- polycycles (2)
- redox (2)
- two-photon absorption (2)
- Acene (1)
- Alkyl(amino)carbene (1)
- Beryllium (1)
- Bindungsaktivierung (1)
- Bor-Carbonylkomplexe (1)
- DNA/RNA binding (1)
- DNA/RNA sensors (1)
- Dichtefunktionalrechnungen (1)
- EDA-NOCV (1)
- Heterocyclen (1)
- K-region (1)
- Metallocene (1)
- Metallocenes (1)
- Metalloradicals (1)
- N-heterocyclic olefins (1)
- NIR OLED (1)
- Nickel ComplexCyclic (1)
- Photoelektronenspektroskopie (1)
- Reduktionen (1)
- Titanium (1)
- Umlagerungen (1)
- Wade’s rules (1)
- X-ray crystallography (1)
- acenes (1)
- aminyl radicals (1)
- azaborinines (1)
- bioimaging (1)
- biradicals (1)
- bismuth (1)
- bismuth amides (1)
- bond Activation (1)
- bond activation (1)
- borafluorenes (1)
- boraselenone (1)
- boroles (1)
- boron chains (1)
- boronate (1)
- boronic acid (1)
- carbene ligands (1)
- carborane (1)
- cell imaging (1)
- chalcogens (1)
- charge transfer (1)
- chemical bonding (1)
- chromism (1)
- chromophores (1)
- computational chemistry (1)
- conjugated oligomers (1)
- cyclic alkyl(amino)carbene (1)
- cyclization (1)
- dehydrocoupling (1)
- density-functional calculations (1)
- diboranes (1)
- diborynes (1)
- dicoordinate borylene (1)
- diphosphanes (1)
- donor-acceptor systems (1)
- dual fluorescence (1)
- electrochemistry (1)
- electron storage (1)
- equilibrium (1)
- fluorescent probes (1)
- furan (1)
- half-sandwich complexes (1)
- heavier pnictogens (1)
- hybrid materials (1)
- hydroarylation (1)
- intersystem crossing (1)
- isoelectronic analogues (1)
- isomer (1)
- isomerization (1)
- low-valent compounds (1)
- luminescent (1)
- main-group chemistry (1)
- metal-free (1)
- metallacycles (1)
- methyl viologen (1)
- methylbismuth (1)
- near-IR chromophores (1)
- nitrogen heterocycles (1)
- nucleic acid (1)
- organometallic chemistry (1)
- orylation (1)
- oxidation (1)
- pericyclic reaction (1)
- phosphorus heterocycles (1)
- photocatalysis (1)
- photophysical prosperties (1)
- pi-conjugation (1)
- pnictogen coupling (1)
- polycyclic aromatic hydrocarbon (1)
- polycyclic aromatic hydrocarbons (1)
- push-pull stabilization (1)
- pyrenes (1)
- pyridinium (1)
- radical coupling (1)
- radical reactions (1)
- radical species (1)
- radicals (1)
- rearrangements (1)
- redox reactions (1)
- small HOMO-LUMO gap (1)
- spin distribution (1)
- spiroborates (1)
- strained molecules (1)
- synthesis (1)
- tetramers (1)
- tetraorganoborate salt (1)
- theranostics (1)
- thiophene (1)
- threecoordinate boron (1)
- transition metal complex (1)
- triarylamine (1)
- triarylborane (1)
- triarylboranes (1)
- viologens (1)
- weak intermolecular coordination (1)
Institute
Sonstige beteiligte Institutionen
Two N-methylpyridinium compounds and analogous N-protonated salts of 2- and 2,7-substituted 4-pyridyl-pyrene compounds were synthesised and their crystal structures, photophysical properties both in solution and in the solid state, electrochemical and spectroelectrochemical properties were studied. Upon methylation or protonation, the emission maxima are significantly bathochromically shifted compared to the neutral compounds, although the absorption maxima remain almost unchanged. As a result, the cationic compounds show very large apparent Stokes shifts of up to 7200 cm\(^{-1}\). The N-methylpyridinium compounds have a single reduction at ca. −1.5 V vs. Fc/Fc\(^+\) in MeCN. While the reduction process was reversible for the 2,7-disubstituted compound, it was irreversible for the mono-substituted one. Experimental findings are complemented by DFT and TD-DFT calculations. Furthermore, the N-methylpyridinium compounds show strong interactions with calf thymus (ct)-DNA, presumably by intercalation, which paves the way for further applications of these multi-functional compounds as potential DNA-bioactive agents.