Volume 63, Issue 12 e202319502
Research Article

Dual Stimuli-Responsive [2]Rotaxanes with Tunable Vibration-Induced Emission and Switchable Circularly Polarized Luminescence

Wei-Tao Xu

Wei-Tao Xu

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

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Xue Li

Xue Li

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

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Peicong Wu

Peicong Wu

State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Dongchuan Road 500, Shanghai, 200241 China

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Dr. Wei-Jian Li

Dr. Wei-Jian Li

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

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Dr. Yu Wang

Dr. Yu Wang

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

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Xiao-Qin Xu

Xiao-Qin Xu

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

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Dr. Xu-Qing Wang

Dr. Xu-Qing Wang

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

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Prof. Dr. Jinquan Chen

Prof. Dr. Jinquan Chen

State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Dongchuan Road 500, Shanghai, 200241 China

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Prof. Dr. Hai-Bo Yang

Prof. Dr. Hai-Bo Yang

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

State Key Laboratory of Petroleum Molecular and Process Engineering (SKLPMPE), Sinopec Research Institute of Petroleum Processing Co. LTD., Beijing, 100083 China

East China Normal University, Shanghai, 200062 China

Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai, 200241 China

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Prof. Dr. Wei Wang

Corresponding Author

Prof. Dr. Wei Wang

Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062 China

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First published: 27 January 2024
Citations: 30

Graphical Abstract

The dual stimuli-responsiveness of novel [2]rotaxanes endows them with both tunable vibration-induced emission and switchable circularly polarized luminescence, providing a novel platform for the construction of smart chiral luminescent materials for practical use.

Abstract

Aiming at the construction of novel stimuli-responsive fluorescent system with precisely tunable emissions, the typical 9,14-diphenyl-9,14-dihydrodibenzo[a, c]phenazine (DPAC) luminogen with attractive vibration-induced emission (VIE) behavior has been introduced into [2]rotaxane as a stopper. Taking advantage of their unique dual stimuli-responsiveness towards solvent and anion, the resultant [2]rotaxanes reveal both tunable VIE and switchable circularly polarized luminescence (CPL). Attributed to the formation of mechanical bonds, DPAC-functionalized [2]rotaxanes display interesting VIE behaviors including white-light emission upon the addition of viscous solvent, as evaluated in detail by femtosecond transient absorption (TA) spectra. In addition, ascribed to the regulation of chirality information transmission through anion-induced motions of chiral wheel, the resolved chiral [2]rotaxanes reveal unique switchable CPL upon the addition of anion, leading to significant increase in the dissymmetry factors (glum) values with excellent reversibility. Interestingly, upon doping the chiral [2]rotaxanes in stretchable polymer, the blend films reveal remarkable emission change from white light to light blue with significant 6.5-fold increase in glum values up to −0.035 under external tensile stresses. This work provides not only a new design strategy for developing molecular systems with fluorescent tunability but also a novel platform for the construction of smart chiral luminescent materials for practical use.

Conflict of interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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