By a News Reporter-Staff News Editor at Science Letter -- Current study results on Hydrogen have been published. According to news reporting out of Albuquerque, New Mexico, by NewsRx editors, research stated, "We report the synthesis and characterization of a polythiophene diblock copolymer selectively functionalized with 1-n-hexylisoorotic acid moieties (P4) and a 2,6-diaminopyridine tethered fullerene derivative (PCBP). Self-assembly between P4 and PCBP through 'three-point' complementary hydrogen bonding interactions is utilized to control and stabilize blend morphologies."
Our news journalists obtained a quote from the research from the University of New Mexico, "These interactions have been studied both in solution and in solid state by H-1 NMR and UV-vis spectroscopies as well as optical and atomic force microscopies (AFM). Solar cells employing P4 blended with different weight ratios of PCBP and phenyl-C61-butyric acid methyl ester (PCBM) were fabricated and tested. The best power conversion efficiencies (PCEs) were observed in devices made from P4/PCBP blends (10/8 by wt) and ternary blends of P4/PCBP/PCBM (10/4/4 by wt) as active layers. Thermal stabilities of these solar cells were studied in detail by aging tests, and corresponding morphological changes were closely monitored by absorption spectroscopy, optical microscopy, AFM, and X-ray analyses. The 'three-point' complementary hydrogen bonding interactions between P4 and PCBP, in cooperation with block polymer self-assembly, were found to not only improve the thermal stability of solar cells significantly but also lead to tunable active layer morphologies."
According to the news editors, the research concluded: "Nanostructures with long-range order were identified in blend films employing P4, which has never been observed before in conventional polymer/fullerene bulk heterojunction (BHJ) films."
For more information on this research see: Complementary Hydrogen Bonding and Block Copolymer Self-Assembly in Cooperation toward Stable Solar Cells with Tunable Morphologies. Macromolecules, 2013;46(22):9021-9031. Macromolecules can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Macromolecules - www.pubs.acs.org/journal/mamobx)
Our news journalists report that additional information may be obtained by contacting F. Li, University of New Mexico, Albuquerque, NM 87131, United States. Additional authors for this research include K.G. Yager, N.M. Dawson, J.H. Yang, K.J. Malloy and Y. Qin (see also Hydrogen).
Keywords for this news article include: Gases, Elements, Hydrogen, New Mexico, Fullerenes, Albuquerque, United States, Nanotechnology, Inorganic Chemicals, Emerging Technologies, North and Central America
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC