Size-complementary effects of PEG diamine 1,1’-disubstituted ferrocene on incorporations of β- and γ-cyclodextrins and syntheses of poly(pseudo)rotaxanes with lower coverages therefrom

Autor: Lin Ye, Zeng-guo Feng, Ming Gao, Ai-ying Zhang, Rong-hao Song, Xue Geng
Rok vydání: 2021
Předmět:
Zdroj: Journal of Inclusion Phenomena and Macrocyclic Chemistry. 102:99-108
ISSN: 1573-1111
1388-3127
DOI: 10.1007/s10847-021-01104-3
Popis: Poly(ethylene glycol) diamine 1,1’-disubstituted ferrocene was utilized as a size-com-plementary site to synthesize lower coverage pseudopolyrotaxanes (pPRs) from self-assemblies with β- and γ-cyclodextrins (CDs). After end-capping β-CD pPRs using N-(triphenylmethyl)glycine (Trt-Gly-OH), an exact β-CD [3]polyrotaxane (PR) was created. However, an unexpected γ-CD [2]PR and a predictive chain folded stranded γ-CD pPR were identified from end-capped γ-CD pPRs. After end-capping a β-CD pPR self-assembled from β-CDs with amine terminated PEG containing ferrocene as a site-complementary site using Trt-Gly-OH, an exact β-CD [3]PR is invariably created. However, an unexpected γ-CD [2]PR and a predictive chain folded stranded γ-CD pPR are identified from end-capping γ-CD pPRs with Trt-Gly-OH.
Databáze: OpenAIRE
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