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Perylenetetracarboxylic Dianhydride and Aniline Assembled Supramolecular Nanomaterial with Multi-color Electrochemiluminescence for Highly Sensitive Label-free Immunoassay

Abstract

Most electrochemiluminescence (ECL) studies were focused on the single emission of luminophore, which was severely limited the development of multi-color ECL fundamental theory and applications. Herein, we prepared a multi-color ECL supramolecular nanomaterial self-assembled by 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) and aniline (An) through hydrogen bonding. This PTCDA-An supramolecular nanomaterial simultaneously produced multi-color emission peaked at 486, 692 and 760 nm with K2S2O8 as coreactant. And the multi-emissions were assigned to excitated PTCDA monomer (486 nm), H-dimer (692 nm) and J-dimer (760 nm). The simultaneously increased dual-color ECL intensity significantly enhanced the total ECL intensity of PTCDA-An. And this high efficient ECL nanomaterial was further used as ECL platform to construct label-free immunosensor for tumor markers carcinoembryonic antigen (CEA) detection. The total ECL intensity of immunosensor exhibited a sensitive decrease due to the simultaneously decreased ECL of multi-emissions. And this immunosensor exhibited wide linear range from 1 pg mL-1 to 10 μg mL-1 with low detection limit of 0.23 pg mL-1. Multi-color ECL from the same luminophore PTCDA in this work also provided a new perspective for multi-color ECL biomaterial’s design.

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Supplementary files

Article information


Submitted
26 Oct 2019
Accepted
01 Feb 2020
First published
05 Feb 2020

J. Mater. Chem. B, 2020, Accepted Manuscript
Article type
Paper

Perylenetetracarboxylic Dianhydride and Aniline Assembled Supramolecular Nanomaterial with Multi-color Electrochemiluminescence for Highly Sensitive Label-free Immunoassay

W. Zhang, Y. Song, Y. Wang, S. He, L. Shang, R. Ma, L. Jia and H. Wang, J. Mater. Chem. B, 2020, Accepted Manuscript , DOI: 10.1039/C9TB02368B

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