Low-Energy Ion−Surface Reactions of Pyrazine with Two Classes of Self-Assembled Monolayers: Influence of Alkyl Chain Orientation
作者:Vincent J. Angelico、Scott A. Mitchell、Vicki H. Wysocki
DOI:10.1021/ac0001028
日期:2000.6.1
n-alkanethiols (CH3(CH2)n-S-Au, n = 14-17) and 4-(4-alkoxyphenylbenzenethiols (4-(4-CH3(CH2)mOC6H4)-C6H4-S-Au, m = 14-17) chemisorbed onto Au (111) substrates are known to exhibit a chain-length-dependent odd-even effect that places the terminal C-C bond into different orientations. Ion-surface collisions (20 eV) of pyrazine molecular ion (M = m/z 80) with these surfaces yield reaction product ions corresponding
吡嗪与两类自组装单层(SAM)膜的碰撞用于确定表面限制和所得烷基链取向是否影响低能离子表面反应。由正烷硫醇(CH3(CH2)nS-Au,n = 14-17)和4-(4-烷氧基苯基苯硫醇(4-(4-CH3(CH2)mOC6H4)-C6H4-S-Au,m =化学吸附到Au(111)衬底上的14-17)表现出链长相关的奇偶效应,该效应将末端CC键置于不同的方向上。吡嗪分子离子的离子表面碰撞(20 eV)(M = m / z 80)在这些表面上产生的反应产物离子对应于氢原子([M + H] + = m / z 81)和甲基([M + CH3] + = m / z 95)的加成。离子表面。对于两种类型的SAM膜,测量反应产物离子的相对丰度的差异作为链长的函数。具有奇数链长(n,m = 14和16)的SAM膜比具有偶数链长(n,m = 15和17)的SAM膜具有更高的H加成离子量。对于CH 3的添加,
Organic electroluminescent display device and chemical compounds for liquid crystals
申请人:Kido Junji
公开号:US20070164257A1
公开(公告)日:2007-07-19
The new organic electroluminescent display device has a carrier-transporting layer and/or an organic luminous layer composed of a nematic liquid crystal or a liquid crystal dispersing a carrier-transporting low-molecule therein. When the organic luminous layer is to be bestowed with faculty as a liquid crystal, it is made of a nematic liquid crystal. Both the carrier-transporting layer and the organic luminous layer may be bestowed with faculty as a liquid crystal. Since the liquid crystal is incorporated in the carrier-transporting layer and/or the organic luminous layer, the display device can be driven as a liquid crystal display device in a dark place by charging with a voltage lower than a light emission initiating potential. Of course, it is driven as an electroluminescent display device when it is charged with a voltage higher than the light emission initiating potential. Use of an electroluminescent liquid crystal as a organic luminous layer enables omission of a carrier-transporting layer.
Organic Electroluminescent Display Device and Chemical Compounds for Liquid Crystals
申请人:Kido Junji
公开号:US20090058277A1
公开(公告)日:2009-03-05
The new organic electroluminescent display device has a carrier-transporting layer and/or an organic luminous layer composed of a nematic liquid crystal or a liquid crystal dispersing a carrier-transporting low-molecule therein. When the organic luminous layer is to be bestowed with faculty as a liquid crystal, it is made of a nematic liquid crystal. Both the carrier-transporting layer and the organic luminous layer may be bestowed with faculty as a liquid crystal. Since the liquid crystal is incorporated in the carrier-transporting layer and/or the organic luminous layer, the display device can be driven as a liquid crystal display device in a dark place by charging with a voltage lower than a light emission initiating potential. Of course, it is driven as an electroluminescent display device when it is charged with a voltage higher than the light emission initiating potential. Use of an electroluminescent liquid crystal as a organic luminous layer enables omission of a carrier-transporting layer.