Title: Large-scale production of ureido-cytosine based supramolecular polymers with well-controlled hierarchical nanostructures
Authors: Cheng, Chih-Chia
Chang, Feng-Chih
Wang, Jui-Hsu
Chu, Yu-Lin
Wang, Yeh-Sheng
Lee, Duu-Jong
Chuang, Wei-Tsung
Xin, Zhong
應用化學系
Department of Applied Chemistry
Issue Date: 1-Jan-2015
Abstract: A novel supramolecular polymer containing urea-cytosine (UrCy) quadruple hydrogen-bonding moieties that possesses a high association constant (K-a > 10(6) M-1) was synthesized at high yield (96%) at kilogram-scale. The synthesized telechelic macromer dissolved in solution can undergo a substantial change in solution viscoelasticity and can self-assemble due to the noncovalent nature of supramolecular polymerization. As the concentration of UrCy in solution was increased, the spherical assemblies gradually transformed to an ordered lamellar phase with an extremely high degree of polymerization. In addition, the dynamic behavior of UrCy units induced a sudden phase transition in the bulk state, revealing an interesting order-disorder transition from a crystalline solid to liquid state. This newly-discovered material has excellent polymer-like features that are distinct to existing systems. A simple path for forming supramolecular polymers is recommended for the design, large-scale production and manipulation of self-assembled materials with distinctive properties.
URI: http://dx.doi.org/10.1039/c5ra15849d
http://hdl.handle.net/11536/128346
ISSN: 2046-2069
DOI: 10.1039/c5ra15849d
Journal: RSC ADVANCES
Volume: 5
Issue: 93
Begin Page: 76451
End Page: 76457
Appears in Collections:Articles


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