# name
Rose Bengal-incorporated supramolecular gels as a topical platform for localized antimicrobial photodynamic therapy<br />

# metadata.dc.description.abstract[].value
Efficient and localized singlet oxygen (SO) generation is essential for improving antimicrobial photodynamic therapy (aPDT). In this study, a bis-imidazolium-based amphiphilic gelator is used, which self-assembles into a supramolecular gel in a water–ethanol medium and incorporates Rose Bengal (RB) as a photosensitizer. The gel network provides a confined environment that promotes SO formation under light irradiation. RB@Gel was characterized with respect to its morphology, degradation behavior, and swelling properties. Biopharmaceutical assessment included in vitro release, ex vivo permeation studies and Hen’s Egg Test–Chorioallantoic Membrane (HET-CAM) assay. Rheological measurements confirmed a viscoelastic profile, indicating structural stability and suitability for localized therapeutic applications. SO production within the gel was quantified using tetrasodium 9,10-anthracenediyl-bis(methylene)dimalonate (NaABMA), showing higher efficiency than that of RB in solution. The RB@Gel exhibited significant aPDT against E. coli in a direct-surface contact assay. Overall, the RB@Gel provides a stable, suitable platform capable of efficient SO generation and potent antibacterial activity, highlighting its promise for localized aPDT applications.

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International Journal of Molecular Sciences, 2025, vol. 26, num.23, p. 11455

# metadata.dc.source[].value
Articles publicats en revistes (Farmàcia, Tecnologia Farmacèutica i Fisicoquímica)

# metadata.dc.title[].value
Rose Bengal-incorporated supramolecular gels as a topical platform for localized antimicrobial photodynamic therapy<br />