New porphyrin-based dendrimers with alkene linked fluorenyl antennae for optics. (30th November 2017)

• Record Type: Journal Article
• Authors: Yao, Dandan; Zhang, Xu; Abid, Seifallah; Shi, Limiao; Blanchard-Desce, Mireille; Mongin, Olivier; Paul, Frédéric; Paul-Roth, Christine O.
• Is Part Of: New journal of chemistry. Volume 42:Number 1(2018)
• Page Start: 395
• Page End: 401
• Publication Date: 2017-11-30
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj03522e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : The biphotonic ( σ 2 ) singlet oxygen generation capability ( Φ Δ ) of new TFP-based photosensitizers peripherally functionalized with various dendrons containing 2-ethynylflorenyl chromophores is reported along with remarkable fluorescence yields ( Φ F ) of up to 17%. Abstract : The design of porphyrin-based dendrimers featuring conjugated dendrons via alkene spacers herein demonstrates their important role in determining linear optical properties, as well as two-photon absorption (PA) and singlet oxygen photosensitising properties. Improvement in these properties compared to those observed for their analogous alkyne spacers makes these molecules appealing for combined 2-photon-based photodynamic therapy (PDT) and imaging.