Durable organic nonlinear optical membranes for thermotolerant lightings and in vivo bioimaging

Tian Tian, Yuxuan Fang, Wenhui Wang, Meifang Yang, Ying Tan, Chuan Xu, Shuo Zhang, Yuxin Chen, Mingyi Xu (), Bin Cai () and Wu-Qiang Wu ()
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Tian Tian: Sun Yat-sen University
Yuxuan Fang: Sun Yat-sen University
Wenhui Wang: Sun Yat-sen University
Meifang Yang: Sun Yat-sen University
Ying Tan: Sun Yat-sen University
Chuan Xu: University of Shanghai for Science and Technology
Shuo Zhang: Sun Yat-sen University
Yuxin Chen: Sun Yat-sen University
Mingyi Xu: Guangdong University of Technology
Bin Cai: University of Shanghai for Science and Technology
Wu-Qiang Wu: Sun Yat-sen University

Nature Communications, 2023, vol. 14, issue 1, 1-14

Abstract: Abstract Organic nonlinear optical materials have potential in applications such as lightings and bioimaging, but tend to have low photoluminescent quantum yields and are prone to lose the nonlinear optical activity. Herein, we demonstrate to weave large-area, flexible organic nonlinear optical membranes composed of 4-N,N-dimethylamino-4ʹ-Nʹ-methyl-stilbazolium tosylate@cyclodextrin host-guest supramolecular complex. These membranes exhibited a record high photoluminescence quantum yield of 73.5%, and could continuously emit orange luminescence even being heated at 300 °C, thus enabling the fabrication of thermotolerant light-emitting diodes. The nonlinear optical property of these membranes can be well-preserved even in polar environment. The supramolecular assemblies with multiphoton absorption characteristics were used for in vivo real-time imaging of Escherichia coli at 1000 nm excitation. These findings demonstrate to achieve scalable fabrication of organic nonlinear optical materials with high photoluminescence quantum yields, and good stability against thermal stress and polar environment for high-performance, durable optoelectronic devices and humanized multiphoton bio-probes.

Date: 2023
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DOI: 10.1038/s41467-023-40168-2

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