“Colorless-to-black” electrochromic and AIE-active polyamides: An effective strategy for the highest-contrast electrofluorochromism

Sun N, Su K, Zhou Z, Wang D, Fery A, Lissel F, Zhao X, Chen C (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Macromolecules American Chemical Society

Book Volume: 53

Pages Range: 10117-10127

Journal Issue: 22

DOI: 10.1021/acs.macromol.0c01019

Abstract

Electrofluorochromic (EFC) materials have gained extensive attention owing to their interesting modulations of fluorescence by an electric stimulus. However, the limited performances, especially the low fluorescence on/off contrast, significantly hampered their further applications. Herein, we design a new strategy to achieve high-contrast electrofluorochromism by combinations of “colorless-to-black” electrochromism and highly fluorescent AIE activity. Given the effective fluorescence quenching effect and high solid-state fluorescence, a fluorescence contrast of 838 is realized, to the best of our knowledge, the highest reported so far. Furthermore, to explore the structure-property relationships, we also separated the E/Z isomers of tetraphenylethylene (TPE) and studied the properties of the three electroactive/fluorescent polymers (11TPE-PA, E-12TPE-PA, and Z-12TPE-PA) derived from different TPE derivatives and isomers. The three branches of polymers all exhibited AIE-active and “colorless-to-black” electrochromic (EC) properties. In addition to the ultrahigh fluorescence contrast, Z-12TPE-PA also integrated high electrochromic contrast (Δ% T = 92%), short response time (0.6 s/0.3 s), and excellent switching stability (300 cycles), paving the way for the applications in various electronic applications. The study will provide novel insights into the future design and development of high-performance EC/EFC materials.

Involved external institutions

Jilin University (JLU) / 吉林大学 CN China (CN) Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE)

How to cite

APA:

Sun, N., Su, K., Zhou, Z., Wang, D., Fery, A., Lissel, F.,... Chen, C. (2020). “Colorless-to-black” electrochromic and AIE-active polyamides: An effective strategy for the highest-contrast electrofluorochromism. Macromolecules, 53(22), 10117-10127. https://doi.org/10.1021/acs.macromol.0c01019

MLA:

Sun, Ningwei, et al. "“Colorless-to-black” electrochromic and AIE-active polyamides: An effective strategy for the highest-contrast electrofluorochromism." Macromolecules 53.22 (2020): 10117-10127.

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