Supramolecular Aggregates of Tetraphenylethene-Cored AIEgen toward Mechanoluminescent and Electroluminescent Devices

Biswas, Sandip ; Jana, Debabrata ; Kumar, Gundam Sandeep ; Maji, Subrata ; Kundu, Pronab ; Ghorai, Uttam K. ; Giri, Rajendra P. ; Das, Bidisa ; Chattopadhyay, Nitin ; Ghorai, Binay K. ; Acharya, Somobrata (2018) Supramolecular Aggregates of Tetraphenylethene-Cored AIEgen toward Mechanoluminescent and Electroluminescent Devices ACS Applied Materials & Interfaces, 10 (20). pp. 17409-17418. ISSN 1944-8244

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Official URL: http://doi.org/10.1021/acsami.8b00165

Related URL: http://dx.doi.org/10.1021/acsami.8b00165

Abstract

Luminescent materials possessing both the mechanoluminescence (MCL) and electroluminescence (EL) properties are the quest for sensing and optoelectronic applications. We report on the synthesis of a new tailor-made luminogen, 1,2-bis(4-(1-([1,1′-biphenyl]-4-yl)-2,2-diphenylvinyl)phenyl)-1,2-diphenylethene (TPE 5), using Suzuki coupling reaction with high yield. An aggregation-induced emission (AIE) active complex TPE 5 forms supramolecular spherical aggregates at the air–water interface of a Langmuir trough. As a consequence, a large enhancement of luminescence is obtained from the mono- and multilayer Langmuir–Blodgett films of TPE 5 owing to the AIE effect. The luminogen TPE 5 exhibits a reversible MCL response, displaying photoluminescence switching due to change in the crystalline states under external stimuli. The unique feature of luminescence enhancement upon aggregate formation is utilized for the fabrication of light-emitting diodes with low threshold voltage using supramolecular aggregates as the active layer. This work demonstrates an efficient strategy for obtaining controlled supramolecular aggregates of AIEgen with a potential in the dual applications of MCL and EL.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:114854
Deposited On:17 Dec 2020 12:02
Last Modified:17 Dec 2020 12:02

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