Type I strong acceptor–weak acceptor photosensitizing assemblies for the regulated aerobic oxidative coupling of anilines

Abstract

Type I photostable photosensitizing assemblies of DPZ-TPY have been developed using phenazine as strong acceptor and terpyridine groups as weak acceptors. The as prepared DPZ-TPY assemblies exhibit sufficient excited state...

Strategic Insertion of Heavy Atom to Tailor TADF OLED Material for the Development of Type I Photosensitizing Catalytic Red Emissive Assemblies

“…Our research work involves the development of metal-free photocatalytic photosensitizing assemblies for green oxidative organic transformations in aqueous media. [10][11][12] Different from the small organic molecules based photocatalytic systems, supramolecular photosensitizing assemblies are advantageous due to their high photostability and bright emission. Keeping in view the importance of carrying out oxidative organic transformations using air as sole oxidant, recently, from our lab, we reported the development of type I photosensitizing assemblies based on conjugated donor-acceptor-donor building blocks DPZ-Th [10] and DPZ-TPY [11] (Scheme 1).…”

“…[10][11][12] Different from the small organic molecules based photocatalytic systems, supramolecular photosensitizing assemblies are advantageous due to their high photostability and bright emission. Keeping in view the importance of carrying out oxidative organic transformations using air as sole oxidant, recently, from our lab, we reported the development of type I photosensitizing assemblies based on conjugated donor-acceptor-donor building blocks DPZ-Th [10] and DPZ-TPY [11] (Scheme 1). Upon covalently linking thiophene groups to the phenazine core, efficient type I photosensitizing activity was observed.…”

“…Our research work involves the development of metal‐free photocatalytic photosensitizing assemblies for green oxidative organic transformations in aqueous media [10–12] . Different from the small organic molecules based photocatalytic systems, supramolecular photosensitizing assemblies are advantageous due to their high photostability and bright emission.…”

Controlled assembly of photosensitizers through directional interactions for effective photooxidation

“…Subsequently, the 1 O 2 generation was evaluated using ABDA (9,10-anthracenediyl-bis(methylene)dimalonic acid), a commercially employed 1 O 2 indicator in aqueous media. 29 For comparison, the degradation of ABDA was performed with 0.051 μmol 1 , 2 and commercial RB . As shown in Fig.…”