期刊
ACS NANO
卷 9, 期 11, 页码 11389-11397出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b05281
关键词
aerogel; supramolecular hydrogel; host-guest inclusion complexes; phase change materials
类别
资金
- National Natural Science Foundation of China [51572285, 21373024, 21404117]
- Natural Science Foundation of Jiangsu Province [BK20151234]
- Chinese Academy of Sciences
- Beijing Institute of Technology
Aerogels with low density and high porosity show outstanding properties such as large surface area and low thermal and acoustic conductivity. However, great challenges remain to convert hydrophilic polymer based hydrogels to corresponding aerogels. Here, we report a structurally new type of aerogels, supramolecular aerogels (SMAs), derived from supramolecular hydrogels formed by self-assembling of poly(ethylene glycol) and alpha/gamma-cyclodextrin. The SMAs posses a characteristic binary crystallized nanosheet structure due to their supramolecular cross-linking nature, and their specific surface areas and nanosheet structures are tunable. Furthermore, we demonstrated application of the aerogels as solid solid phase change materials with tunable latent heat, reversible melting-crystallization cycle while keeping the microstructure of the SMAs unchanged.
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