A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Protonation-induced fluorescence modulation of carbazole-based emitters (2022)
Taipale, E., Durandin, N. A., Salunke, J. K., Candeias, N. R., Ruoko, T.-P., Ward, J. S., Priimagi, A., & Rissanen, K. (2022). Protonation-induced fluorescence modulation of carbazole-based emitters. Materials Advances, 3(3), 1703-1712. https://doi.org/10.1039/d1ma00438g
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Taipale, Essi; Durandin, Nikita A.; Salunke, Jagadish K.; Candeias, Nuno R.; Ruoko, Tero-Petri; Ward, Jas S.; Priimagi, Arri; Rissanen, Kari
Lehti tai sarja: Materials Advances
eISSN: 2633-5409
Julkaisuvuosi: 2022
Volyymi: 3
Lehden numero: 3
Artikkelin sivunumerot: 1703-1712
Kustantaja: Royal Society of Chemistry (RSC)
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1039/d1ma00438g
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/79321
Tiivistelmä
The development of purely organic fluorescence emitters is of great importance for their low cost and high performance. Responding to this demand, carbazole is a promising emitter due to its extensive freedom for functionalisation, high thermal and chemical stability, as well as low cost. Herein, the effect of protonation on the fluorescence of various pyridine-functionalised carbazole-based bipolar host materials was studied both in solution and in the solid-state. The restriction of intramolecular rotation of the molecules upon protonation of the pyridyl-moiety together with easier planarization of the protonated acceptor and the donor moieties and relocalisation of the LUMO orbital on the protonated species was found to increase the fluorescence quantum yield from 16% to 80%. Additionally, in the solid-state, the J-type packing of the molecules further facilitated the increase in the fluorescence quantum yield from 1% to 49%. In both cases, the pronounced bathochromic spectral shift was observed indicating that the gap between the emissive state and the first triplet state of the molecules was diminished upon protonation. Therefore, implementing this strategy could further boost the development of future emitters.
YSO-asiasanat: supramolekulaarinen kemia; fluoresenssi; molekyylit; elektronit; orgaaninen kemia
Liittyvät organisaatiot
OKM-raportointi: Kyllä
VIRTA-lähetysvuosi: 2022
JUFO-taso: 1
