News Column

Reports Outline General Science Findings from SLAC National Accelerator Laboratory

June 4, 2014

By a News Reporter-Staff News Editor at Electronics Newsweekly -- Investigators publish new report on Science. According to news originating from Menlo Park, California, by VerticalNews correspondents, research stated, "A crystal's structure has significant impact on its resulting biological, physical, optical and electronic properties. In organic electronics, 6,13(bis-triisopropylsilylethynyl) pentacene (TIPS-pentacene), a small-molecule organic semiconductor, adopts metastable polymorphs possessing significantly faster charge transport than the equilibrium crystal when deposited using the solution-shearing method."

Our news journalists obtained a quote from the research from SLAC National Accelerator Laboratory, "Here, we use a combination of high-speed polarized optical microscopy, in situ microbeam grazing incidence wide-angle X-ray-scattering and molecular simulations to understand the mechanism behind formation of metastable TIPS-pentacene polymorphs. We observe that thin-film crystallization occurs first at the air-solution interface, and nanoscale vertical spatial confinement of the solution results in formation of metastable polymorphs, a one-dimensional and large-area analogy to crystallization of polymorphs in nanoporous matrices."

According to the news editors, the research concluded: "We demonstrate that metastable polymorphism can be tuned with unprecedented control and produced over large areas by either varying physical confinement conditions or by tuning energetic conditions during crystallization through use of solvent molecules of various sizes."

For more information on this research see: One-dimensional self-confinement promotes polymorph selection in large-area organic semiconductor thin films. Nature Communications, 2014;5():83-90. Nature Communications can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group -; Nature Communications -

The news correspondents report that additional information may be obtained from G. Giri, SLAC Natl Accelerator Lab, Menlo Park, CA 94025, United States. Additional authors for this research include R.P. Li, D.M. Smilgies, E.Q. Li, Y. Diao, K.M. Lenn, M. Chiu, D.W. Lin, R. Allen, J. Reinspach, S.C.B. Mannsfeld, S.T. Thoroddsen, P. Clancy, Z.A. Bao and A. Amassian.

Keywords for this news article include: Science, Menlo Park, California, Electronics, United States, Semiconductor, North and Central America

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Source: Electronics Newsweekly

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