A study on the fluorescence quenching of 9-Aminoacridine by certain antioxidants

Manivannan, C.; Renganathan, R.

doi:10.1016/j.jlumin.2011.05.050

Cited by 16 publications

(5 citation statements)

References 35 publications

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“…Compound 8 has been used as a fluorescence quencher of other small molecules (62, 63), and is only weakly fluorescent. Nonetheless, the weak photophysical activity (455 nm emission maximum from 340 nm excitation) was sufficient for it to participate in proximity-induced energy transfer.…”

Section: Resultsmentioning

confidence: 99%

Cyclodextrin-promoted energy transfer for broadly applicable small-molecule detection

Serio

Chanthalyma

Prignano

et al. 2014

Supramolecular Chemistry

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Reported herein is the development of non-covalent, proximity-induced energy transfer from small-molecule toxicants to organic fluorophores bound in the cavity of γ-cyclodextrin. This energy transfer occurs with exceptional efficiency for a broad range of toxicants in complex biological media, and is largely independent of the spectral overlap between the donor and acceptor. This generally applicable phenomenon has significant potential in the development of new turn-on detection schemes.

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Section: Resultsmentioning

confidence: 99%

Cyclodextrin-promoted energy transfer for broadly applicable small-molecule detection

Serio

Chanthalyma

Prignano

et al. 2014

Supramolecular Chemistry

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“…The NDN2 absorption spectrum in the presence of GO does not show any shift compared to pure NDN2. It can be due to dynamic quenching [26]. The absorption spectra of the mixture NDN2 and GO are identical to the sum of the absorption spectra of GO and NDN2 individually.…”

Section: Absorption Characteristics Of Ndn2 /Gomentioning

confidence: 93%

Synthesis, Solvatochromism and Fluorescence Quenching Studies of Naphthalene Diimide Dye by Nano graphene oxide

2023

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A naphthalene diimide dye with two side amine arm was prepared. Uv-Vis and fluorescence spectroscopic techniques studied its photophysical and solvatochromic characteristics in different solvents. Its fluorescence quenching mechanism has been carried out as a fluorescence probe model with graphene oxide as an efficient quencher. The results indicated that graphene plays an effective quencher against the naphthalene diimide molecule. The Stern-Volmer analysis results show a combination of two static and dynamic quenching mechanisms via an energy transfer process.

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“…Fluorescence quenching can be resolved with high sensitivity towards mechanism and action of antioxidants than other conventional methods like absorption measurements involving DPPH [11] or ABTS radicals [12]. Recently we have reported the fluorescence quenching of 9-AA showing pronounced tendency to undergo charge transfer process with certain antioxidants such as estrogens and flavonoids [13]. Similarly the effect on substitution of electron donor and acceptor groups on fluorescence was examined by Nandhikonda et al [14].…”

Section: -Aminoacridinementioning

confidence: 99%

Investigations on Photoinduced Interaction of 9-Aminoacridine with Certain Catechols and Rutin

et al. 2012

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The fluorescence quenching of 9-aminoacridine by certain biologically important catechols and rutin was investigated using absorption, steady state and time resolved fluorescence measurements. The in vitro-antioxidant activities of the above compounds were studied using deoxyribose degradation assay and nitric oxide scavenging assay. The experimental results showed that the fluorescence of 9-aminoacridine was quenched by quencher molecules via forming ground state complex. The bimolecular quenching rate constant k(q), binding constant (K) and number of binding sites (n) were calculated at different temperatures from relevant fluorescence data. Static quenching mechanism was supported by lifetime measurement. The free energy change (ΔG(et)) for electron transfer process was calculated by Rehm-Weller equation. The binding distance of 4-nitrocatechol with 9-aminoacridine was obtained according to Forster's non-radiative energy transfer theory. Nature of binding forces and their interactions was probed based on thermodynamic parameters.

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A study on the fluorescence quenching of 9-Aminoacridine by certain antioxidants

Cited by 16 publications

References 35 publications

Cyclodextrin-promoted energy transfer for broadly applicable small-molecule detection

Cyclodextrin-promoted energy transfer for broadly applicable small-molecule detection

Synthesis, Solvatochromism and Fluorescence Quenching Studies of Naphthalene Diimide Dye by Nano graphene oxide

Investigations on Photoinduced Interaction of 9-Aminoacridine with Certain Catechols and Rutin

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