首页|Resolving fluorescence signatures of a photoconvertible fluorophore by fluorescence spectroscopy and MCR-ALS-based combinatorial approach

Resolving fluorescence signatures of a photoconvertible fluorophore by fluorescence spectroscopy and MCR-ALS-based combinatorial approach

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  • NSTL
  • Elsevier
Photoconvertible fluorophores are important for a myriad of applications in chemistry and biology. Here, we spectrally resolve and quantify individual photophysical information of a dual-emitting photoconvertible fluorophore by fluorescence spectroscopy and multivariate curve resolution-alternate least square techniques. We found that the reactant fluorophore, which shows a weak locally excited (LE) emission and a dominant intramolecular charge transfer (ICT) emission, also exhibits an intermolecular charge transfer emission. The ICT emission bands of both the reactant and product fluorophores are originated from their respective LE states. The reactant fluorophore is a mixture of its different ground state conformers. Higher yields of photoconversion of the yellow-emitting reactant fluorophore are achieved via a visible light photoreaction, leading to formation of pure white light at an intermediate photoreaction time. These findings together help us to glean new photophysical and photochemical insights into the photoreaction of a dual-emitting photoconvertible fluorophore. (C) 2021 Elsevier B.V. All rights reserved.

Multivariate curve resolution-alternate least squareWhite light emissionPhotoconvertible fluorophoreFluorescence spectroscopyLocally excited emissionIntramolecular charge transfer emissionWHITE-LIGHT-EMISSIONMULTIVARIATE CURVE RESOLUTIONSINGLE ORGANIC-COMPOUNDCOMPONENTLUMINESCENCEPHOTOPHYSICSPHOTOCYCLIZATIONMOLECULECOMPLEXSYSTEMS

Tarai, Madhumita、Singh, Anuja、Pati, Avik Kumar、Mishra, Ashok Kumar

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MIT ADT Univ

Indian Inst Technol Madras

2022

10.1016/j.saa.2021.120683

Spectrochimica acta

Spectrochimica acta

ISSN：1386-1425
年,卷(期)：2022.268
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