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Pregled bibliografske jedinice broj: 855251

Benzimidazole acrylonitriles as multifunctional push-pull chromophores: spectral characterisation, protonation equilibria and nanoaggregation in aqueous solutions


Horak, Ema; Vianello, Robert; Hranjec, Marijana; Krištafor, Svjetlana; Karminski Zamola, Grace; Murković Steinberg, Ivana
Benzimidazole acrylonitriles as multifunctional push-pull chromophores: spectral characterisation, protonation equilibria and nanoaggregation in aqueous solutions // Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 178 (2017), 225-233 doi:10.1016/j.saa.2017.02.011 (međunarodna recenzija, članak, znanstveni)


Naslov
Benzimidazole acrylonitriles as multifunctional push-pull chromophores: spectral characterisation, protonation equilibria and nanoaggregation in aqueous solutions

Autori
Horak, Ema ; Vianello, Robert ; Hranjec, Marijana ; Krištafor, Svjetlana ; Karminski Zamola, Grace ; Murković Steinberg, Ivana

Izvornik
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (1386-1425) 178 (2017); 225-233

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

Ključne riječi
Push-pull chromophores ; benzimidazole ; aggregation induced emission (AIE) ; pH sensitivity ; prototropic equlibrium

Sažetak
Heterocyclic donor-π-acceptor molecular systems based on an N, N-dimethylamino phenylacrylonitrile benzimidazole skeleton have been designed and characterised. The benzimidazole moiety introduces a broad spectrum of useful multifunctional properties to the system including electron accepting ability, biocompatibility and pH sensitity. The photophysical characterisation of the prototropic forms of these chromophores has been carried out in both solution and on immobilisation in polymer films. The experimental results are further supported by computational determination of pKa values. It is noticed that compound 3 forms nanoaggregates in aqueous solutions with aggregation-induced emission (AIE) at 600 nm. All the systems demonstrate spectral pH sensitivity in acidic media which shifts towards near-neutral values upon immobilisation in polymer films or upon aggregation in an aqueous environment (compound 3). The structure-property relationships of these functional chromophores, involving their spectral characteristics, acid-base equilibria, pKa values and aggregation effects have been determined. Potential applications of the molecules are proposed based on their pH sensitivity and AIE properties.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2014-09-3386 - Dizajn i sinteza novih dušikovih heterocikličkih fluorofora i fluorescentnih nanomaterijala kao kemijskih senzora za pH i metalne ione (Robert Vianello, )

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

Citiraj ovu publikaciju

Horak, Ema; Vianello, Robert; Hranjec, Marijana; Krištafor, Svjetlana; Karminski Zamola, Grace; Murković Steinberg, Ivana
Benzimidazole acrylonitriles as multifunctional push-pull chromophores: spectral characterisation, protonation equilibria and nanoaggregation in aqueous solutions // Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 178 (2017), 225-233 doi:10.1016/j.saa.2017.02.011 (međunarodna recenzija, članak, znanstveni)
Horak, E., Vianello, R., Hranjec, M., Krištafor, S., Karminski Zamola, G. & Murković Steinberg, I. (2017) Benzimidazole acrylonitriles as multifunctional push-pull chromophores: spectral characterisation, protonation equilibria and nanoaggregation in aqueous solutions. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 178, 225-233 doi:10.1016/j.saa.2017.02.011.
@article{article, year = {2017}, pages = {225-233}, DOI = {10.1016/j.saa.2017.02.011}, keywords = {push-pull chromophores, benzimidazole, aggregation induced emission (AIE), pH sensitivity, prototropic equlibrium}, journal = {Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy}, doi = {10.1016/j.saa.2017.02.011}, volume = {178}, issn = {1386-1425}, title = {Benzimidazole acrylonitriles as multifunctional push-pull chromophores: spectral characterisation, protonation equilibria and nanoaggregation in aqueous solutions}, keyword = {push-pull chromophores, benzimidazole, aggregation induced emission (AIE), pH sensitivity, prototropic equlibrium} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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