Journal
CHEMICAL SCIENCE
Volume 12, Issue 38, Pages 12619-12630Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1sc01913a
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Funding
- National Natural Science Foundation of China [91956102, 21731003]
- National Key R&D Program of China [2017YFA0303203, 2018YFA0306004]
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This study introduces a new strategy for the generation of superhelices of 1D CPs by introducing flexible cyclohexyl groups on the side chains. This may lead to a new and general route to the hierarchical assembly and synthesis of helical CP materials.
Chiral transcription from the molecular level to the macroscopic level by self-organization has been a topic of considerable interest for mimicking biological systems. Homochiral coordination polymers (CPs) are intriguing systems that can be applied in the construction of artificial helical architectures, but they have scarcely been explored to date. Herein, we propose a new strategy for the generation of superhelices of 1D CPs by introducing flexible cyclohexyl groups on the side chains to simultaneously induce interchain van der Waals interactions and chain misalignment due to conformer interconversion. Superhelices of S-or R-Tb(cyampH)(3)center dot 3H(2)O (S-1H, R-1H) [cyampH(2) = S - or R-(1-cyclohexylethyl)aminomethylphosphonic acid] were obtained successfully, the formation of which was found to follow a new type of chaintwist-growth mechanism that had not been described previously. The design strategy used in this work may open a new and general route to the hierarchical assembly and synthesis of helical CP materials.
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