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New Data from Zhejiang University Illuminate Findings in Materials Science and Physical Chemistry (Self-Assembly of Rod-Coil Diblock Copolymers...

July 11, 2014



New Data from Zhejiang University Illuminate Findings in Materials Science and Physical Chemistry (Self-Assembly of Rod-Coil Diblock Copolymers within a Rod-Selective Slit: A Dissipative Particle Dynamics Simulation Study)

By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Science. According to news reporting from Hangzhou, People's Republic of China, by NewsRx journalists, research stated, "Dissipative particle dynamics simulations are performed to investigate the self-assembly of rod-coil diblock copolymers RNRCN-NR within a rod-selective slit. The self-assembled structure of the confined system is sensitively dependent on the rigidity k(theta) and the fraction f of the rod block and the slit height H. From the phase diagram of structures with respect to k(theta) and f for N = 12 and H = 6, we observe four main structures including disordered cylinder (DC) structure, hexagonally packed cylinders (HPC) perpendicular to the slit surfaces, and lamellar structures parallel (L-parallel to) and perpendicular (L-perpendicular to) to surfaces."

The news correspondents obtained a quote from the research from Zhejiang University, "And structure transitions can be achieved by tuning k(theta). The effect of the slit height on the self-assembled structure is also studied for R6C6 and R7C5 copolymers with large k(theta). For R6C6, different structures near surfaces and in the interior of slit are observed in relatively wide slits. Whereas for R7C5, L-perpendicular to structure, whose lamellar domain spacing decays exponentially with H, is generally generated."

According to the news reporters, the research concluded: "Our results suggest an effective way to control the ordering of rod-coil diblock copolymers under nanoscale confinement."

For more information on this research see: Self-Assembly of Rod-Coil Diblock Copolymers within a Rod-Selective Slit: A Dissipative Particle Dynamics Simulation Study. Langmuir, 2014;30(21):6267-6273. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Langmuir - www.pubs.acs.org/journal/langd5)

Our news journalists report that additional information may be obtained by contacting J.H. Huang, Zhejiang University, Dept. of Phys, Hangzhou 310027, Zhejiang, People's Republic of China. Additional authors for this research include Z.X. Ma and M.B. Luo (see also Science).

Keywords for this news article include: Asia, Science, Hangzhou, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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