β-Cyclodextrin- and adamantyl-substituted poly(acrylate) self-assembling aqueous networks designed for controlled complexation and release of small molecules

• Liang Yan,
• Duc-Truc Pham,
• Philip Clements,
• Stephen F. Lincoln,
• Jie Wang,
• Xuhong Guo and
• Christopher J. Easton

Beilstein J. Org. Chem. 2017, 13, 1879–1892, doi:10.3762/bjoc.13.183

• Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia 10.3762/bjoc.13.183 Abstract Three aqueous self-assembling poly(acrylate) networks have been designed to gain insight into the factors controlling the complexation and release of small molecules within them. These

• networks are formed between 8.8% 6A-(2-aminoethyl)amino-6A-deoxy-6A-β-cyclodextrin, β-CDen, randomly substituted poly(acrylate), PAAβ-CDen, and one of the 3.3% 1-(2-aminoethyl)amidoadamantyl, ADen, 3.0% 1-(6-aminohexyl)amidoadamantyl, ADhn, or 2.9% 1-(12-aminododecyl)amidoadamantyl, ADddn, randomly

• substituted poly(acrylate)s, PAAADen, PAAADhn and PAAADddn, respectively, such that the ratio of β-CDen to adamantyl substituents is ca. 3:1. The variation of the characteristics of the complexation of the dyes methyl red, methyl orange and ethyl orange in these three networks and by β-cyclodextrin, β-CD, and

Supramolecular polymer assembly in aqueous solution arising from cyclodextrin host–guest complexation

• Jie Wang,
• Zhiqiang Qiu,
• Yiming Wang,
• Li Li,
• Xuhong Guo,
• Duc-Truc Pham,
• Stephen F. Lincoln and
• Robert K. Prud’homme

Beilstein J. Org. Chem. 2016, 12, 50–72, doi:10.3762/bjoc.12.7

• substituents of substituted ethyl(hydroxyethyl) cellulose by α-CD, β-CD and their methylated analogs [49]. Guo et al. have shown that the viscosity of aqueous solutions 0.5 wt % in 2% n-C12H25, n-C14H29 or n-C18H37 randomly substituted poly(acrylate) (PAAddn, PAAtdn and PAAodn, respectively) is significantly

• to obtain highly viscous solutions as a result of polymer network formation occurring through host–guest complexation between the β-CD and adamantyl substituents of the polymers. Guo et al. prepared substituted poly(acrylate) networks through host–guest complexation between either the α-CD or β-CD

• substituents of PAAα-CD and PAAβ-CD and the n-C18H37 substituents of PAAodn [44], and also the 1-(2-aminoethyl)amido-β-CD (β-CDen) and 1-(2-aminoethyl)amidoadmantyl (ADen) substituents on the substituted poly(acrylate)s PAAβ-CDen and PAAADen, respectively [57]. The host–guest complexations between the

Convenient preparation of high molecular weight poly(dimethylsiloxane) using thermally latent NHC-catalysis: a structure-activity correlation

• Stefan Naumann,
• Johannes Klein,
• Dongren Wang and
• Michael R. Buchmeiser

Beilstein J. Org. Chem. 2015, 11, 2261–2266, doi:10.3762/bjoc.11.246

• range of accessible monomer structures has grown impressively [6][7]. Nowadays, NHC-mediated polymerization can be applied to prepare polymers of high industrial and commercial importance, such as poly(amide)s [8][9], poly(ether)s [10], poly(urethane)s [11][12] or poly(acrylate)s [13][14][15][16][17][18