The steady-state fluorescence band from the lowest excited state is shifted bathochromically with lengthening of the polymethine chain, which is also reflected in the absorption shift. According to quantum-chemical modeling, the appearance of unconventional fluorescence, which suppresses Kasha's rule, ...
Kasha's rulemulti-colored emissionsolid-state organic materialsupper excited statesA unique molecular skeleton generates multiple‐state emissions in the solid state at room temperature. As presented by Y.‐Z. Chen, L.‐Z. Wu, and co‐workers in their Research Article on page10173, large energy...
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the coherent oscillation) in an indirect way, that is to deliver the confinement effect from the shell- to core-domain of metal NCs driven by a triple-ligands engineering induced surface rigidity enhancement method. Most importantly, the as-prepared colloidal metal...
A family of fluorescent molecular rotors has been developed and their mechanism for emission understood. It has been observed that, although most fluorescent molecules emit from their lowest energy excited state, S1 (in accordance with Kasha's rule), BODIHY dyes do not. Furthermore, their ...
Contrary to Kasha's rule , three rigid and structurally-simple heterocyclic stilbene derivatives, (E)-3H, 3'H-[1,1'-biisobenzofuranylidene]-3,3'-dione (SDPE-OO), (E)-3-(3-oxobenzo[c] thiophen-1(3H)-ylidene)isobenzofuran-1(3H)-one (SDPE-OS), and (E)-3H,3'H-[1,1'-bi...
Kasha's rule emphasizes that excitons should deexcite from the lowest excited state; indeed most luminous emitters follow this rule. However, little effort has been made to suppress and utilize Kasha's rule to realize variable emission from the perspective of modulating the molecular configuration. ...
The steady-state fluorescence band from the lowest excited state is shifted bathochromically with lengthening of the polymethine chain, which is also reflected in the absorption shift. According to quantum-chemical modeling, the appearance of unconventional fluorescence, which suppresses Kasha's rule, ...
They exhibit excitation wavelength-dependent emissions in solution due to the suppression of Kasha's rule. Interestingly, in dimethylformamide, 1–3 emit light that covers all the regions of primary colours as a function of excitation wavelength, and 1 and 2 emit white light (λex = 420 nm) ...
Kasha-RegelMehrfarbige EmissionOrganische FestkörpermaterialienObere angeregte ZuständeEin einzigartiges Molekülgerüst erzeugt Mehrfachemissionen im Festkrper bei Raumtemperatur. Wie Y.‐Z. Chen, L.‐Z. Wu etal. in ihrem Forschungsartikel auf S.10259 beschreiben, unterdrücken groe Energie...