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

Srideep, Dasari and Sriram, Kasilingam and Kotha, Srinu and Babu, Deepu J. and Singh, Saurabh Kumar and Rao, K V (2022) Synthesis and Self‐assembly of Benzoperylene Benzimidazoles: Tunable Morphology with Aggregation‐Induced Enhanced Emission. Chemistry – An Asian Journal, 17 (8). ISSN 1861-4728

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Abstract

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

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IITH Creators:

IITH Creators	ORCiD
Singh, Saurabh Kumar	UNSPECIFIED
Rao, K V	https://orcid.org/0000-0002-6821-6241

Item Type:

Article

Additional Information:

KVR acknowledge SERB-Early Career Research Award (ECR/2018/001222), government of India for the financial support. DS acknowledges the funding from the Ministry of Education (MoE) for pursuing PhD. SK thanks the CSIR, India for the senior research fellowship. SKS acknowledges IIT Hyderabad for generous funding. SKS thanks to the support and resources provided by PARAM Shivay Facility under the National Supercomputing Mission, Government of India at the Indian Institute of Technology, Varanasi. We thank Dr. Lopamudra Giri and Vaibhav Dhyani, Department of Chemical Engineering, IIT Hyderabad for confocal microscopy. Mr. Manish Chandra Joshi and Dr. Ranjith Ramadurai, department of Materials Science and Metallurgical Engineering, IIT Hyderabad for thin film XRD measurements and Dr. Liu Qi, EPFL for discussions on XRD. We thank Dr. Sai Santosh Kumar Raavi and Md Soif Ahmed, Department of Physics, IIT Hyderabad for fluorescence lifetime measurements.

Uncontrolled Keywords:

AIEE; Benzoperylene benzimidazoles; Self-assembly; Supramolecular chemistry

Subjects:

Others > Metallurgy Metallurgical Engineering
Chemistry
Materials Engineering > Materials engineering

Divisions:

Department of Chemistry
Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

23 Jul 2022 06:24

Last Modified:

23 Jul 2022 06:24