Synthesis of quadruply boron-doped acenes with stimuli-responsive multicolor emission

Cheng Chen, Yongkang Guo, Zhidong Chang, Klaus Müllen and Xiao-Ye Wang ()
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Cheng Chen: Nankai University
Yongkang Guo: Nankai University
Zhidong Chang: Nankai University
Klaus Müllen: Ackermannweg 10
Xiao-Ye Wang: Nankai University

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Boron-doped acenes have attracted attention due to their unique structures and intriguing luminescent properties. However, the hitherto known boron-doped acenes have only one or two boron atoms, limiting the chemical space of this unique family of compounds and the capability to tune their optical properties. Herein, we report the synthesis of quadruply boron-doped acenes, including pentacene, heptacene, and nonacene. The importance of the boron doping level on the luminescent properties of acenes is demonstrated. The title compounds manifest enhanced Lewis acidity as compared with dihydrodiboraacenes, leading to Lewis-base-responsive emission in the solid state. Moreover, quadruply boron-doped nonacene displays mechanochromic luminescence in addition to Lewis-base-responsive properties, realizing high-contrast solid-state multicolor emission. This work greatly expands the chemistry of boron-doped acenes and offers opportunities for developing boron-based luminescent materials.

Date: 2024
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DOI: 10.1038/s41467-024-51806-8

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