Mechanochromic Copolymers with a Rhodamine-Rich Block
A new class of multirhodamine-based macromechanophores (Rh-PETs) are synthesized. Chain extension of Rh-PETs leads to a series of high mechanophore content copolymers including Rh-PET containing poly(methyl acrylate)s (Rh-PET-PMAs) and polyurethanes (Rh-PET-PUs). This platform allows for systematic analyses of mechanochromic properties of the polymers under sonication in the solution state and tension/compression in the bulk state in terms of their rhodamine content and molecular weight. Compared to their monorhodamine analogues, Rh-PET-PMAs and Rh-PET-PUs exhibit more efficient mechanochemical ring opening of rhodamine, reduced force threshold, and improved bulk mechanical properties. This design is thus revealed as a versatile methodology to promote the mechanochromic sensitivity of Rh-based stress-reporting polymers.
Authors
- Xiaoshuai Huang (ORCID: https://orcid.org/0000-0002-0495-4720)
- Shuaipeng Zhang
- Mengjiao Wu (ORCID: https://orcid.org/0000-0001-5312-9340)
- Jianhui Wang (ORCID: https://orcid.org/0000-0003-2581-7247)
- Yuan Yuan (ORCID: https://orcid.org/0000-0001-6149-0128)
- Yaxin Wang (ORCID: https://orcid.org/0000-0003-0642-2346)
- Yulan Chen (ORCID: https://orcid.org/0000-0001-6017-8888)
- Yifei Gao (ORCID: https://orcid.org/0000-0001-9104-046X)
- Z. Wu (ORCID: https://orcid.org/0009-0002-9943-5276)
Institutions
- Tianjin University (CN)
- Jilin University (CN)
- Jilin Medical University (CN)
- State Key Laboratory of Supramolecular Structure and Materials
Publication Details
- Journal
- Macromolecules
- Published
- 2025-02-26
- DOI
- https://doi.org/10.1021/acs.macromol.4c02818
- Citations
- 8
- Primary Topic
- Porphyrin and Phthalocyanine Chemistry
- Type
- article
- Field-Weighted Citation Impact
- 4.14
Funders
- National Natural Science Foundation of China
- State Key Laboratory of Supramolecular Structure and Materials
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities