News Column

Studies in the Area of Supramolecular Research Reported from Peking University

June 27, 2014

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Supramolecular Research have been published. According to news originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "Polydopamine is not only a multifunctional biopolymer with promising optoelectronic properties but it is also a versatile coating platform for different surfaces. The structure and formation of polydopamine is an active area of research."

Our news journalists obtained a quote from the research from Peking University, "Some studies have supposed that polydopamine is composed of covalently bonded dihydroxyindole, indoledione, and dopamine units, but others proposed that noncovalent self-assembly contributes to polydopamine formation as well. However, it is difficult to directly find the details of supramolecular structure of polydopamine via self-assembly. In this study, we first report the graphite-like nanostructure observed in the carbonized polydopamine nanoparticles in nitrogen (or argon) environment at 800 degrees C. Raman characterization, which presents the typical D band and G band, confirmed the existence of graphite-like nanostructures. Our observation provides clear evidence for a layered-stacking supramolecular structure of polydopamine. Particularly, the size of graphite-like domains is similar to that of disk-shaped aggregates hypothesized in previous study about the polymerization of 5,6-dihydroxyindole [Biomacromolecules 2012, 13, 2379]."

According to the news editors, the research concluded: "Analysis of the hierarchical structure of polydopamine helps us understand its formation."

For more information on this research see: Characterization of Carbonized Polydopamine Nanoparticles Suggests Ordered Supramolecular Structure of Polydopamine. Langmuir, 2014;30(19):5497-5505. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Langmuir -

The news correspondents report that additional information may be obtained from X. Yu, Peking University, Coll Chem & Mol Engn, Beijing 100871, People's Republic of China. Additional authors for this research include H.L. Fan, Y. Liu, Z.J. Shi and Z.X. Jin (see also Supramolecular Research).

Keywords for this news article include: Asia, Beijing, Nanoparticle, Nanotechnology, Emerging Technologies, Supramolecular Research, Supramolecular Structures, People's Republic of China

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Source: Science Letter

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