Synthesis and Self-assembly of Benzoperylene Benzimidazoles: Tunable Morphology with Aggregation-Induced Enhanced Emission.

Dasari Srideep, Kasilingam Sriram, Srinu Kotha, Deepu J Babu, Saurabh Kumar Singh, Kotagiri Venkata Rao

Chemistry, an Asian journal 2022 Apr 14

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Benzoperylene benzimidazoles (BPBIs) based π-systems were synthesized and their self-assembly in both non-polar and polar solvents investigated. Due to the presence of donor and acceptor functional groups, BPBIs absorb light up to 600 nm and display red fluorescence (575-800 nm). Depending on the solvent and side chain, BPBIs self-assemble into various nanostructures such as nanoribbons, nanorods, nanofibers and nanoparticles. Notably, these ordered nanostructures are formed by BPBIs in both polar and non-polar solvents without the aid of hydrogen bonding and amphiphilic interactions due to the presence of a large rigid π-system. Interestingly, BPBIs follow a weakly cooperative mechanism during the self-assembly. Moreover, BPBIs show aggregation-induced enhanced emission (AIEE) in all the self-assembled nanostructures which is not common for rigid π-systems. © 2022 Wiley-VCH GmbH.

Citation

Dasari Srideep, Kasilingam Sriram, Srinu Kotha, Deepu J Babu, Saurabh Kumar Singh, Kotagiri Venkata Rao. Synthesis and Self-assembly of Benzoperylene Benzimidazoles: Tunable Morphology with Aggregation-Induced Enhanced Emission. Chemistry, an Asian journal. 2022 Apr 14;17(8):e202200099