A recyclable dynamic semiconducting polymer consisting of Pauli-paramagnetic diradicaloids promoted and stabilized by catechol–boron coordination

Coordination between 5,5',6,6'-tetrahydroxyindigo (4OH-ID) and boron tribromide unexpectedly affords a novel dynamic covalent polymer, namely P(ID-O-B), consisting of alternating indigo and indigo diradicaloid units. The catechol-boron dynamic bond plays a vital role in promoting the diradicaloid formation and stabilizing the formed diradicaloid segments. The diradicaloid segment in the polymer has a triplet ground state and a thermally populated doublet state, which has been confirmed by the EPR study. Although not conjugated, the polymer still exhibits an electrical conductivity over 10<sup>-6</sup> S cm<sup>-1</sup>. The SQUID study shows that the polymer is Pauli paramagnetic, indicating that the metallic domain exists in this non-conjugated polymer. This diradicaloid-containing polymer is stable toward long-term storage (over 6 months) and thermal treatment over 200 °C, but can be easily depolymerized when treated with methanol.

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Publication Details

Journal
Chemical Science
Published
2024-12-13
DOI
https://doi.org/10.1039/d4sc06910b
Citations
2
Primary Topic
Synthesis and Properties of Aromatic Compounds
Type
article
Field-Weighted Citation Impact
0.50

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article

A recyclable dynamic semiconducting polymer consisting of Pauli-paramagnetic diradicaloids promoted and stabilized by catechol–boron coordination

Hongqian Sang, Youbing Mu, Biao Xiao, Chenxi Xiong et al.
2 citations
Chemical Science
Synthesis and Properties of Aromatic Compounds
0.50
article

A recyclable dynamic semiconducting polymer consisting of Pauli-paramagnetic diradicaloids promoted and stabilized by catechol–boron coordination

Hongqian Sang, Youbing Mu, Biao Xiao, Chenxi Xiong, Zhenggang Lan, Shibiao Wan, Miao Sun, You Song, Minghui Cui, Hangxu Liu, Zhenxing Wang, Xinyu Chen
article en
2 citations

Abstract

Coordination between 5,5',6,6'-tetrahydroxyindigo (4OH-ID) and boron tribromide unexpectedly affords a novel dynamic covalent polymer, namely P(ID-O-B), consisting of alternating indigo and indigo diradicaloid units. The catechol-boron dynamic bond plays a vital role in promoting the diradicaloid formation and stabilizing the formed diradicaloid segments. The diradicaloid segment in the polymer has a triplet ground state and a thermally populated doublet state, which has been confirmed by the EPR study. Although not conjugated, the polymer still exhibits an electrical conductivity over 10<sup>-6</sup> S cm<sup>-1</sup>. The SQUID study shows that the polymer is Pauli paramagnetic, indicating that the metallic domain exists in this non-conjugated polymer. This diradicaloid-containing polymer is stable toward long-term storage (over 6 months) and thermal treatment over 200 °C, but can be easily depolymerized when treated with methanol.

Chemical ScienceVol. 16(3)
South China Normal University (CN), Jianghan University (CN), Huazhong University of Science and Technology (CN), Nanjing University (CN)
National Natural Science Foundation of China, Natural Science Foundation of Hubei Province, South China University of Technology, Jianghan University
Openalex Percentile: Top 37%
Synthesis and Properties of Aromatic Compounds
0.50
DOIOpen Access PDFOpenAlex
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