Heavy-atom-free π-twisted photosensitizers for fluorescence bioimaging and photodynamic therapy

Sánchez, Darío Puchán; Morice, Korentin; Mutovska, Monika G.; Khrouz, Lhoussain; Josse, Pierre; Allain, Magali; Gohier, Frédéric; Blanchard, Philippe; Monnereau, Cyrille; Le Bahers, Tangui; Sabouri, Nasim; Zagranyarski, Yulian; Cabanetos, Clement; Deiana, Marco

doi:10.1039/d4tb01014k

J. Mater. Chem. B

2024

DOI: 10.1039/d4tb01014k

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Heavy-atom-free π-twisted photosensitizers for fluorescence bioimaging and photodynamic therapy

Darío Puchán Sánchez,

Korentin Morice,

Monika G. Mutovska

et al.

Abstract: As the field of preclinical research on photosensitizers (PSs) for anticancer photodynamic therapy (PDT) continues to expand, a focused effort is underway to develop agents with innovative molecular structures that...

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Cited by 2 publications

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Metal‐Free Benzothioxanthene Imide Based Dyes for Organic Light‐Emitting Electrochemical Cells

Leong,

Kim,

Morice

et al. 2024

Advanced Optical Materials

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Two synthetic organic dyes of the Benzothioxanthene imide (BTI) family are explored as a promising electroactive material for organic light‐emitting electrochemical cells (LECs). The high thermal stability and ease of thin film processing make BTI‐based compounds suitable for these devices. However, their planar π‐conjugated structure often leads to aggregation‐caused quenching (ACQ), reducing luminescence in the solid state. To overcome this, this study has taken advantage of host‐guest interactions with 4,4′‐bis(9H‐carbazol‐9‐yl) biphenyl (p‐CBP), poly(9‐vinylcarbazole) (PVK), and poly(dioctylfluorene) (PFO) to suppress ACQ. The use of p‐CBP improved the internal electrical double layer (EDL) alignment within the film, resulting in higher luminescence compared to PFO and PVK‐based LECs. The BTI‐F dye, when incorporated into a dual host system with p‐CBP and PFO, achieved an impressive luminescence of up to 3900 cd m−2. Additionally, PFO enhanced charge balance, contributing to a blue shift in maximum absorption wavelength and increasing the device's tolerance. A triple‐host system (p‐CBP, PVK, PFO) further extended the device's half‐life (t1/2) to 54 min, demonstrating the potential of these host‐guest systems in advancing metal‐free LEC technology.

show abstract

Metal‐Free Benzothioxanthene Imide Based Dyes for Organic Light‐Emitting Electrochemical Cells

Leong,

Kim,

Morice

et al. 2024

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

NIR-activated multifunctional agents for the combined application in cancer imaging and therapy

Repetowski,

Warszyńska,

Dąbrowski

2025

Advances in Colloid and Interface Science

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Heavy-atom-free π-twisted photosensitizers for fluorescence bioimaging and photodynamic therapy

Abstract: As the field of preclinical research on photosensitizers (PSs) for anticancer photodynamic therapy (PDT) continues to expand, a focused effort is underway to develop agents with innovative molecular structures that...

Cited by 2 publications

References 102 publications

Metal‐Free Benzothioxanthene Imide Based Dyes for Organic Light‐Emitting Electrochemical Cells

Metal‐Free Benzothioxanthene Imide Based Dyes for Organic Light‐Emitting Electrochemical Cells

NIR-activated multifunctional agents for the combined application in cancer imaging and therapy

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