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  • Dynamic covalent bond based on reversible photo [4 + 4] cycloaddition of anthracene for construction of double-dynamic polymers.

Dynamic covalent bond based on reversible photo [4 + 4] cycloaddition of anthracene for construction of double-dynamic polymers.

Organic letters (2013-11-19)
Jiang-Fei Xu, Yu-Zhe Chen, Li-Zhu Wu, Chen-Ho Tung, Qing-Zheng Yang
ABSTRACT

Dynamic covalent bonds supplied by reversible anthracene dimerization were combined with pillar[5]arene/imidazole host-guest interactions to construct double-dynamic polymers. Heating such polymers (in solution or as a gel) led to depolymerization by dissociation of either the host-guest complexes alone or the complexes and the anthracene dimers, depending on the extent of heating. The polymers reformed readily upon cooling or irradiation.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Anthracene, sublimed grade, ≥99%
Supelco
Anthracene, analytical standard
Supelco
Anthracene, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Sigma-Aldrich
Anthracene, ReagentPlus®, 99%
Sigma-Aldrich
Anthracene, reagent grade, 97%
Sigma-Aldrich
Anthracene, suitable for scintillation, ≥99.0% (GC)
Supelco
Anthracene, analytical standard