my.chemeurope.com
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
The geometric and electronic structures of organosilicon oligomers, nSixL(C=C)y with linear silicon segments and nSixR(C=C)y with cyclic silicon segments, are studied by using the density functional theory. It is found from the calculated results that the extension of the π-conjugation plays an important role in tuning the geometric and electronic structures. The band gap tends to be decreased and the hole injection rate tends to be increased with the elongation of the π-conjugated units. An effective σ-π conjugation occurs between the silanylene moiety and the ethenylene moiety, especially for the polymers with a rather small π-electron moiety. Interestingly, an even/odd effect of the band gap is found. A PSixR(C=C)y has narrower band gap than a corresponding PSixL(C=C)y. These results are in good agreement with the experimental observations.
| Authors: | Yan Shang, LuQing Yang, GuiLing Zhang, Hui Zhang, Bo Liu | |
| Journal: | Journal of Polymer Research | |
| Year: | 2011 | |
| DOI: | 10.1007/s10965-011-9596-4 | |
| Publication date: | 08-03-2011 |
Watchlist
This is where you can add this publication to your personal favourites.
Additional Information
Nematicidal activity of essential oils: a review
Plant parasitic nematodes are the most destructive group of plant pathogens worldwide and their control is extremely challenging. Plant Essential oils (EOs) and their constituents have a great potential in nematode control since they can be developed for use as nematicides themselves or can ... more
For over a century, ulcer has been a major cause of morbidity and mortality. Its treatment has progressed from vagotomy to proton pump inhibitors. However, the drugs used produce many adverse effects and are less effective than they ought to be. Therefore, there is a growing interest in alt ... more
Endophytic fungi from medicinal plants: a treasure hunt for bioactive metabolites
Endophytic fungi are ubiquitous organisms found in the plants, residing intercellular or intracellular, at least for a portion of their lives without causing apparent symptoms of infection. Almost all plants are known to harbor endophytes. The choice of the plant to be used for exploring en ... more
Cocktail achieves superconducting boost
Physicists describe how they have synthesized a new material that belongs to the iron-selenide class of superconductors, called LixFe2Se2(NH3)y, in a paper about to be published in EPJ B. The work was carried out by Ernst-Wilhelm Scheidt from the University of Augsburg and colleagues. This ... more
US underestimates costs of carbon pollution and climate change
The U.S. federal government is significantly underestimating the costs of carbon pollution because it is using a faulty analytical model, according to a new study published in the Journal of Environmental Studies and Sciences. A more appropriate accounting of costs would pave the way to cle ... more
Vladimir V. Dmitriev awarded prestigious prize in low temperature physics
Springer advisory board member Vladimir V. Dmitriev, along with fellow scientists Yuriy M. Bunkov and Igor A. Fomin, have been named winners of the 2008 Fritz London Memorial Prize for their discovery and understanding of the "Phase Coherent Spin Precession and Spin Superfluidity of 3He-B." ... more
Über CHEMIE.DE
CHEMIE.DE Information Service GmbH runs specialist scientific internet portals. The secret to our success? We are familiar with what we publish.
Advertising at CHEMIE.DE
Our advertising formats support you in getting your message across to a clearly defined target audience.
© 1997-2013 CHEMIE.DE Information Service GmbH, All rights reserved
Netmeeting
