BOPHYs versus BODIPYs: A comparison of their performance as effective multi-function organic dyes



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Sola Llano, Rebeca and Jiménez, J. and Avellanal Zaballa, Edurne and Johnson, M. and Cabreros, Trevor A. and Moreno Jiménez, Florencio and Maroto, Beatriz Lora and Muller, Gilles and Bañuelos Prieto, Jorge and Cerdán Pedraza, Luis and García Moreno, Inmaculada and Moya Cerero, Santiago de la (2019) BOPHYs versus BODIPYs: A comparison of their performance as effective multi-function organic dyes. Dyes and Pigments, 170 (https:). 11 p.. ISSN 0143-7208

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The computationally-aided photophysical and lasing properties of a selected battery of BOPHYs are described and compared to those of related BODIPY counterparts. The present joined theoretical-experimental study helps to put into context the weaknesses and strengths of both dye families under different irradiation conditions. The chemical versatility of the BOPHY scaffold has been also comparatively explored to modulate key photonic properties towards the development of red-emitting dyes, chiroptical dyes and singlet oxygen photosensitizers. Thus, BOPHY BINOLation by fluorine substitution with enantiopure BINOLs endows the BOPHY chromophore with chiroptical activity, as supporting by the simulated circular dichroism, decreasing deeply its fluorescent response due to the promotion of fluorescence-quenching intramolecular charge transfer (ICT). Interestingly, the sole alkylation of the BOPHY core strongly modulates the promotion of ICT, allowing the generation of highly bright BINOL-based BOPHY dyes. Moreover, 3,3′ dibromoBINOLating BOPHYs can easily achieve singlet-oxygen photogeneration, owing to spin-orbit coupling mediated by heavy-atom effect feasible in view of the theoretically predicted disposition of the bromines surrounding the chromophore. From this background, we have established the master guidelines to design bright fluorophores and laser dyes, photosensitizers for singlet oxygen production and chiroptical dyes based on BOPHYs. The possibility to finely mix and balance such properties in angiven molecular scaffold outstands BOPHYs as promising dyes competing with the well-settled BODIPY dyes

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Received 13 May 2019; Received in revised form 27 May 2019; Accepted 23 June 2019; Available online 24 June 2019

Uncontrolled Keywords:Laser dyes; Chiral dyes; Fluorescence; Organic synthesis; Charge transfer; Photosensitizers
Subjects:Sciences > Chemistry > Optics
Sciences > Chemistry > Chemistry, Organic
Medical sciences > Optics > Lasers
ID Code:69757
Deposited On:26 Jul 2022 10:25
Last Modified:03 Aug 2022 10:29

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