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Pregled bibliografske jedinice broj: 885186

Photophysical properties and immobilisation of fluorescent aminated benzimidazo[1, 2-a]quinolines


Hranjec, Marijana; Horak, Ema; Vianello, Robert; Perin, Nataša; Murković Steinberg, Ivana
Photophysical properties and immobilisation of fluorescent aminated benzimidazo[1, 2-a]quinolines // International Symposium on Macrocyclic and Supramolecular Chemistry (ISMSC) in conjunction with ISACS: Challenges in Organic Materials & Supramolecular Chemistry ; Cambridge, 02.-06.07.2017.
Cambridge, 2017. str. P306-P306 (poster, međunarodna recenzija, sažetak, znanstveni)


CROSBI ID: 885186 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Photophysical properties and immobilisation of fluorescent aminated benzimidazo[1, 2-a]quinolines

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

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International Symposium on Macrocyclic and Supramolecular Chemistry (ISMSC) in conjunction with ISACS: Challenges in Organic Materials & Supramolecular Chemistry ; Cambridge, 02.-06.07.2017. / - Cambridge, 2017, P306-P306

Skup
International Symposium on Macrocyclic and Supramolecular Chemistry (ISMSC) in conjunction with ISACS: Challenges in Organic Materials & Supramolecular Chemistry

Mjesto i datum
Cambridge, Engleska, 02-06.07.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
benzimidazol[1, 2-a]quinolines, photophysical properties, fluorescence, pH sensors,
(benzimidazol[1, 2-a]quinolines, photophysical properties, fluorescence, pH sensors)

Sažetak
One of the most extensively studied classes of organic fluorescent sensors is that based on heterocyclic compounds. Benzimidazoles are widely incorporated in the structure of numerous biologically important natural and synthetic biochemical agents. Due to the possession of a highly conjugated planar chromophore, their benzannulated derivatives, offer promising applications in optoelectronics, optical lasers, fluorescence probes and organic luminophores [1]. The fluorescence of cyclic derivatives can be significantly altered by additional substituents placed on different positions of the planar chromophore or by condensation with other heterocycles, which leads to the extension of the conjugated aromatic surface [2]. Within this work, amino substituted benzimidazo[1, 2-a]quinolones were designed as fluorescence sensors to determine pH changes over a wide pH scale. The studied benzimidazo[1, 2-a]quinolines enable internal charge transfer (ICT) interactions, causing expressed pH sensing properties. It is proven that substituent on the position 5 of tetracyclic skeleton radically disrupt charge transfer within the aromatic core and significantly decrease fluorescence intensity. Moreover, upon acidification, the push - pull character of the ICT transition is enhanced in all aminated fluorescent dyes. The emission band is batochromiclly shifted and fluorescence is quenched. Computational analysis complemented experimental results by elucidating pKa values of investigated systems, thus aided in the determination of protonation forms present in solution during measurement and interpretation of electronic transitions.

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) ( POIROT)

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

Profili:

Avatar Url Ivana Steinberg (autor)

Avatar Url Robert Vianello (autor)

Avatar Url Ema Horak (autor)

Avatar Url Nataša Perin (autor)

Avatar Url Marijana Hranjec (autor)


Citiraj ovu publikaciju

Hranjec, Marijana; Horak, Ema; Vianello, Robert; Perin, Nataša; Murković Steinberg, Ivana
Photophysical properties and immobilisation of fluorescent aminated benzimidazo[1, 2-a]quinolines // International Symposium on Macrocyclic and Supramolecular Chemistry (ISMSC) in conjunction with ISACS: Challenges in Organic Materials & Supramolecular Chemistry ; Cambridge, 02.-06.07.2017.
Cambridge, 2017. str. P306-P306 (poster, međunarodna recenzija, sažetak, znanstveni)
Hranjec, M., Horak, E., Vianello, R., Perin, N. & Murković Steinberg, I. (2017) Photophysical properties and immobilisation of fluorescent aminated benzimidazo[1, 2-a]quinolines. U: International Symposium on Macrocyclic and Supramolecular Chemistry (ISMSC) in conjunction with ISACS: Challenges in Organic Materials & Supramolecular Chemistry ; Cambridge, 02.-06.07.2017..
@article{article, year = {2017}, pages = {P306-P306}, keywords = {benzimidazol[1, 2-a]quinolines, photophysical properties, fluorescence, pH sensors,}, title = {Photophysical properties and immobilisation of fluorescent aminated benzimidazo[1, 2-a]quinolines}, keyword = {benzimidazol[1, 2-a]quinolines, photophysical properties, fluorescence, pH sensors,}, publisherplace = {Cambridge, Engleska} }
@article{article, year = {2017}, pages = {P306-P306}, keywords = {benzimidazol[1, 2-a]quinolines, photophysical properties, fluorescence, pH sensors}, title = {Photophysical properties and immobilisation of fluorescent aminated benzimidazo[1, 2-a]quinolines}, keyword = {benzimidazol[1, 2-a]quinolines, photophysical properties, fluorescence, pH sensors}, publisherplace = {Cambridge, Engleska} }




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