E-viri
Recenzirano
Odprti dostop
-
Más-Montoya, Miriam; García Alcaraz, Antonio; Espinosa Ferao, Arturo; Bautista, Delia; Curiel, David
Dyes and pigments, February 2023, 2023-02-00, Letnik: 209Journal Article
Two four-coordinate boron complexes, compounds 5 and 7, have been synthesized, using analogous benzophenanthridine-based ligands but showing different conformational constraints, and their optical properties have been investigated. Following a ligand design that takes into consideration the expansion of π-conjugation and the structural desymmetrization has proved to be a useful approach to obtain fluorophores with large Stokes shifts. The analysis of the Huang-Rhys parameters along with the vibrational modes have revealed that the incorporation of a conformationally free substructure entails an enhanced Stokes shift as a result of an increased geometry relaxation in the first excited state (S1) and the ground state (S0). Additionally, the sensitivity of the Stokes shift to the solvent polarity showed a divergent solvatochromism (bathochromism in emission spectra and hypsochromism in absorption spectra) whose origin has been ascribed by experimental and theoretical methods to the dissimilar extent of the stabilization of S0 and S1 states with respect to the corresponding Franck-Condon states. Besides, the formation of aggregates in dimethylformamide/water mixtures has been related to the solid state packing, determined by X-ray diffraction, to explain the aggregation-induced effects on the emissive properties of the reported organoboron complexes. The less conformationally restricted molecule, 7, displayed aggregation-induced emission (AIE) promoted upon blocking the motion of the peripheral rotor. Display omitted •Photophysical insight into boron complexes with different conformational constraints.•Benzophenanthridine-based ligands are suitable to promote large Stokes shifts.•Divergent solvatochromism has been investigated.•Conformational freedom in boron complexes conditions aggregation-induced emission.
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.