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41.
Daniel T. Longone Jeffrey H. Glans 《Journal of polymer science. Part A, Polymer chemistry》1988,26(2):405-417
We report the synthesis of three new substituted [6.2]paracyclophane-1,5-dienes and their conversion to medium molecular weight polymers by an intra/intermolecular cyclopolymerization. These materials can be oxidatively “doped” by exposure to iodine vapor to give semiconductor properties. 相似文献
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Hae-Kyung Jeong Leyla Colakerol Mei Hua Jin Per-Anders Glans Kevin E. Smith Young Hee Lee 《Chemical physics letters》2008,460(4-6):499-502
Unoccupied electronic states of graphite oxides with different oxidation times have been investigated using X-ray absorption spectroscopy (XAS) in total electron yield (TEY) and total fluorescence yield (TFY) modes. The graphite oxides exhibit graphite-like sp2 states with additional electronic states originating from functional groups. The intensity of the π* state decreases as the atomic ratio O:C increases. The intensity ratio of carboxyl to π* states in XAS TEY mode corresponds to the area ratio of carboxyl to sp2 carbon in X-ray photoelectron spectroscopy. In addition, the two modes in XAS can identify electronic states of functional groups originating from surface or bulk regions. 相似文献
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Correlation between the O 2p Orbital and Redox Reaction in LiMn0.6Fe0.4PO4 Nanowires Studied by Soft X‐ray Absorption 下载免费PDF全文
Dr. Daisuke Asakura Dr. Eiji Hosono Dr. Masashi Okubo Dr. Yusuke Nanba Dr. Haoshen Zhou Dr. Per‐Anders Glans Dr. Jinghua Guo 《Chemphyschem》2016,17(24):4110-4115
The changes in the electronic structure of LiMn0.6Fe0.4PO4 nanowires during discharge processes were investigated by using ex situ soft X‐ray absorption spectroscopy. The Fe L ‐edge X‐ray absorption spectrum attributes the potential plateau at 3.45 V versus Li/Li+ of the discharge curve to a reduction of Fe3+ to Fe2+. The Mn L ‐edge X‐ray absorption spectra exhibit the Mn2+ multiplet structure throughout the discharge process, and the crystal‐field splitting was slightly enhanced upon full discharge. The configuration‐interaction full‐multiplet calculation for the X‐ray absorption spectra reveals that the charge‐transfer effect from O 2p to Mn 3d orbitals should be considerably small, unlike that from the O 2p to Fe 3d orbitals. Instead, the O K‐edge X‐ray absorption spectrum shows a clear spectral change during the discharge process, suggesting that the hybridization of O 2p orbitals with Fe 3d orbitals contributes essentially to the reduction. 相似文献
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L. I. Johansson P. -A. Glans Q. Wahab T. M. Grehk Th. Eickhoff W. Drube 《Applied Surface Science》1999,150(1-4):137-142
Si 2p and C 1s core level spectra recorded at different electron emission angles from SiO2/SiC samples using a photon energy of 3.0 keV show two components. These are identified as originating from SiO2 and SiC for Si 2p while for C 1s they are identified to originate from graphite like carbon and SiC. The relative intensity of these components are extracted and compared to calculated intensity variations assuming different models for the elemental distribution in the surface region. For both samples investigated best agreement between experimental and calculated intensity variations with emission angle is obtained when assuming a graphite like layer on top of the oxide layer. Contribution from carbon at the SiC/SiO2 interface could not be identified. 相似文献
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<正> 7 解的唯一性 如果不考虑非平衡态和不可逆性,则等能密度理论中的基本命题与经典弹性理论中的在形式上完全相同。无论整个系统的动能是大还是小,图6中(sumform)_o上的面力T_i和在(sumform)_c和在的位移u_i将始终在空间坐标系x_i和时刻i下给出。与一般力学中相同,必须知道有关位移u_i及其时间导数的初始条件。它们的影响则可通过(38)和(39)向等能面转化,从而得到 相似文献
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The rate coefficient for recombination of D+ with low energy electrons has been measured at different magnetic fields in the interaction region of the electron cooler
at CRYRING. It is found that the measured recombination rate coefficient is influenced by the magnetic field.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献