Encapsulating Au‐Fe3O4 Nanodots into AIE‐active Supramolecular Assemblies: Ambient Visible‐light Harvesting “Dip‐Strip” Photocatalyst for C−C/C−N Bond Formation Reactions

• Published in: Chemistry, an Asian journal an Asian journal, 2019-03, Vol.14 (6), p.809-813
• Main Authors: Kaur, Harpreet, Kaur, Mandeep, Walia, Preet Kamal, Kumar, Manoj, Bhalla, Vandana
• Format: Article
• Language: English
• Subjects: aggregation-induced emission; Assemblies; Bonding; Carboxylates; Chemistry; C−H activation; Filter paper; Hydrogen bonds; Iron oxides; oligophenylenes; Photocatalysis; Quinoline; recyclable ′dip catalyst; supramolecular chemistry
• ISSN: 1861-4728; 1861-471X
• DOI: 10.1002/asia.201801556

The present study demonstrates the development of a supramolecular porous ensemble consisting of hetero‐oligophenylene derivative 6 and Au‐Fe3O4 nanodots. Supramolecular assemblies of AIE‐active hetero‐oligophenylene derivative 6 served as reactors for the generation of Au‐Fe3O4 nanodots. The as prepared supramolecular ensemble functioned as an efficient recyclable photocatalytic system for C(sp2)−H bond activation of anilines for the construction of quinoline carboxylates. Interestingly, the “dip catalyst” prepared by depositing PTh‐co‐PANI‐6: Au‐Fe3O4 nanodots on a filter paper served as a recyclable strip (up to 10 cycles) for C−C/C−N bond formation reaction. Reaping the harvest: The as‐prepared AIE‐active supramolecular ensemble could harvest ambient visible light and can be utilized as efficient and recyclable “dip strip” photocatalyst for C(sp2)−H bond activation for the construction of quinoline carboxylates via C−H activation.