Banana‐Shaped Oligo(aryleneethynylene)s: Synthesis and Light‐Emitting Characteristics

Abstract

Unerwartete Konjugation: Die bananenförmigen Moleküle 1 und 2 mit Dimethoxybenzol‐ und Pyridineinheiten sind hoch effiziente Emitter von violettem Licht, obwohl die π‐Konjugation durch die meta‐Substitution unterbrochen ist. Die unterschiedlichen Lösungsmittelabhängigkeiten der Φf‐Werte von 1 und 2 werden mit der Verschiedenheit der Differenzdichteverteilungen in den angeregten Zuständen der Moleküle erklärt.

Strategies To Reduce hERG K+ Channel Blockade. Exploring Heteroaromaticity and Rigidity in Novel Pyridine Analogues of Dofetilide

“…Compounds 17n and 18n could not be purified to a desired standard (purity <80%) and the biological data obtained from these compounds was only used qualitatively (see Table ). With the exception of compounds 8a , 15b , 17b , 26 , and 27 , all compounds synthesized and evaluated for hERG activity were considered novel chemical entities using CrossFire Beilstein Database. p K a values of pyridines 19 and 20 were estimated using Marvin software () …”

“…26,38 and 27,40 all compounds synthesized and evaluated for hERG activity were considered novel chemical entities using CrossFire Beilstein Database. pK a values of pyridines 19 and 20 were estimated using Marvin software (http://www.chemaxon.com/marvin/sketch/index.jsp) 9.…”

Revealing Topological Influence of Phenylenediamine Unit on Physicochemical Properties of Donor‐Acceptor‐Donor‐Acceptor Thermally Activated Delayed Fluorescent Macrocycles

“…To date, topological influence of phenylene unit ( meta versus para ) on the properties of phenylene‐linked linear π‐electron conjugated systems, such as oligo(phenylenevinylene)s, [14] oligo(phenylene ethynylene)s, [15] oligo(aniline)s, [16] phenylene‐bridged bis(triarylamine)s [17] and bis(ethynyltriarylamine)s, [18] phenylene‐linked N‐annulated perylene diimide dimers, [19] aminostilbenes, [20] and bis(ethynylene)phenylene‐linked donor (carbazole) and acceptor (naphthalimides) compound, [21] has been moderately explored. The topology in phenylene unit in these previously investigated π‐conjugated systems gives an impact on properties such as HOMO−LUMO optical gap, [14] photoluminescence quantum yield (PLQY), [15] spin localization of radical cation, [16,17] the rate of charge separation, [19] for instance. Nevertheless, such topological studies of π‐conjugated macrocyclic compounds are quite limited to cyclic oligo(phenylenediamine)s [22] and B‐π‐N ambipolar macrocycles [23] .…”

Star‐shaped Organic Molecules That Comprise a 1,3,5‐Trisubstituted Benzene Core and Three Oligoaryleneethynylene Arms as Light‐emitting Materials

“…[1][2][3][4][5][6][7][8] Among these, rigid molecular architectures which consist of a trivalent core and three π extended arms, namely, star-shaped molecules, show a wide domain of intriguing properties useful for the development of optoelectronic devices, [9][10][11][12][13][14] such as OLEDs, field-effect transistors, and nonlinear optical (included two photon absorption) devices. However, with respect to the light-emitting characteristics for this type of molecules applied in OLEDs, only a few papers appear in the literature.…”