Volume 43, Issue 13 pp. 1487-1494
Comprehensive Report

Guest Molecule Induced FRET Enhancement of Photochromic Pillar[5]arene-Based Phenothiazine Derivatives

Hong Yao

Corresponding Author

Hong Yao

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Wenyu Cao

Wenyu Cao

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

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Jinwang Wang

Jinwang Wang

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

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Feixiang Yang

Feixiang Yang

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

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Shuning Qin

Shuning Qin

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

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Tai-Bao Wei

Tai-Bao Wei

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

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Bingbing Shi

Bingbing Shi

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

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Qi Lin

Corresponding Author

Qi Lin

Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070 China

E-mail: [email protected]; [email protected]Search for more papers by this author
First published: 25 March 2025

Comprehensive Summary

In recent years, the study of the photochromic behavior of phenothiazine derivatives has not only enriched the variety of color-changing materials but also provided new donor molecules for the construction of Förster Resonance Energy Transfer (FRET). This advancement broadens the application potential of photochromic materials and offers fresh perspective for FRET research. Herein, pillar[5]arene-linked biphenothiazine derivative (DPP5) was synthesized, while p-dibenzyl-linked biphenothiazine derivative (DPDB) and butyl-linked biphenothiazine derivative (DPB) were designed for comparative study. The photochromic behavior was demonstrated by UV-vis spectra, electron paramagnetic resonance (EPR) and chemical oxidation method, showing the transformation of DPP5 molecule into the radical cation DPP5•+ and subsequently into the dication DPP52+. Furthermore, a FRET system was constructed using dication species DPP52+ as the energy donor and Nile red (NiR) as the energy acceptor. The introduction of guest molecules, 1,6-dibromohexane (1,6-DBH) and 1,10-dibromodecane (1,10-DBD), into the above FRET system enhanced the energy transfer efficiency by increasing the aggregation degree of FRET system by utilizing the cavity of pillar[5]arene through host-guest interaction. The application of the photochromic behavior of phenothiazine derivatives into FRET system, along with the strategy of using guest molecule to enhance FRET properties, will contribute to the development of novel photochromic materials.

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