Reversible pH switchable aggregation-induced emission of self-assembled benzimidazole-based acrylonitrile dye in aqueous solution

Horak, Ema; Hranjec, Marijana; Vianello, Robert; Murković Steinberg, Ivana

doi:10.1016/j.dyepig.2017.03.021

Pregled bibliografske jedinice broj: 860033

Reversible pH switchable aggregation-induced emission of self-assembled benzimidazole-based acrylonitrile dye in aqueous solution

Horak, Ema; Hranjec, Marijana; Vianello, Robert; Murković Steinberg, Ivana

Reversible pH switchable aggregation-induced emission of self-assembled benzimidazole-based acrylonitrile dye in aqueous solution // Dyes and pigments, 142 (2017), 108-115 doi:10.1016/j.dyepig.2017.03.021 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 860033 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Reversible pH switchable aggregation-induced emission of self-assembled benzimidazole-based acrylonitrile dye in aqueous solution

Autori
Horak, Ema ; Hranjec, Marijana ; Vianello, Robert ; Murković Steinberg, Ivana

Izvornik
Dyes and pigments (0143-7208) 142 (2017); 108-115

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
aggregation-induced emission ; benzimidazole ; pH probe ; fluorescence ; ICT chromophore ; chemical sensor

Sažetak
We report the pH switchable fluorescence and aggregation-deaggregation behaviour of a 2- benzimidazolyl substituted acrylonitrile dye (BIA). From the single molecular entity, three prototropic species (tri-state system) are derived that respectively emit in the red, green and blue (RGB) spectral regions. The neutral form is capable of self-assembly in an aqueous environment exhibiting stable red- orange aggregation-induced emission (AIE) at 600 nm in the physiologically relevant pH range. The aggregation and emission are pH switchable and fully-reversible. The molecule is shown to similarly function in the solid state where its emission can be modulated by exposure to acidic and basic vapours. Multicolour and reversibly pH switchable tri- state emission from a single fluorophore containing a biologically active benzimidazole moiety can find application in ratiometric optical chemosensing, bioimaging and functional materials.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA

Projekti:
HRZZ-IP-2014-09-3386 - Dizajn i sinteza novih dušikovih heterocikličkih fluorofora i fluorescentnih nanomaterijala kao kemijskih senzora za pH i metalne ione (iNFiNiTE–SENS) (Vianello, Robert, HRZZ - 2014-09) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Profili:

Ivana Steinberg (autor)