石墨烯和分子的杂化具有开发新应用材料的巨大潜力。然而,必须开发表征此类杂种的新方法。在此,提出了石墨烯与阳离子π-系统的湿化学非共价官能化,并详细表征了石墨烯与分子之间的相互作用。合成、表征了一系列具有不同空间需求和抗衡离子的三阳离子苯并咪唑鎓盐,并将其用于石墨烯杂化物的制造。随后,研究了掺杂效应。这些分子被吸附到石墨烯上,并通过拉曼光谱、XPS 以及 ToF-SIMS 进行研究。带电的 π 系统对底层石墨烯表现出 p 掺杂效应。因此,三阳离子分子通过石墨烯的部分电子转移过程被还原,该过程伴随着抗衡离子的损失。 DFT 计算支持这一假设,并且可以在制造的单层石墨烯/混合 FET 器件中证实强 p 掺杂。结果是开发传感器应用的基础,这些应用基于分析物/分子相互作用和掺杂效应。
石墨烯和分子的杂化具有开发新应用材料的巨大潜力。然而,必须开发表征此类杂种的新方法。在此,提出了石墨烯与阳离子π-系统的湿化学非共价官能化,并详细表征了石墨烯与分子之间的相互作用。合成、表征了一系列具有不同空间需求和抗衡离子的三阳离子苯并咪唑鎓盐,并将其用于石墨烯杂化物的制造。随后,研究了掺杂效应。这些分子被吸附到石墨烯上,并通过拉曼光谱、XPS 以及 ToF-SIMS 进行研究。带电的 π 系统对底层石墨烯表现出 p 掺杂效应。因此,三阳离子分子通过石墨烯的部分电子转移过程被还原,该过程伴随着抗衡离子的损失。 DFT 计算支持这一假设,并且可以在制造的单层石墨烯/混合 FET 器件中证实强 p 掺杂。结果是开发传感器应用的基础,这些应用基于分析物/分子相互作用和掺杂效应。
Compounds are provided that are photoluminescent and electroluminescent, and may emit intense blue or deep blue light. Also provided are methods of producing photoluminescence and electroluminescence, methods of applying the compounds in thin films, and uses of the compounds described herein in a light emitting device, a luminescent probe, a sensor, and/or an electroluminescent device.
Reactions of organo-rhodium complexes with multidentate N,N and N,S-heterocycles and exchange studies by NMR
作者:N. Chandrashekhar、V. Gayathri、N.M. Nanje Gowda
DOI:10.1016/j.poly.2009.09.015
日期:2010.1
perhaps due to restricted Rh–N bond rotation. The olefinic and aliphatic protons would undergo exchange with each other and also with intermediate species. The exchange mechanism may be visualized to involve Rh–N bond breaking, rotation of the cod ligand of the T-shaped (three-coordinate) intermediate species followed by recomplexation. An alternate mechanism may be Rh–cod bond breaking at olefin positions
Compounds are provided that are photoluminescent and electroluminescent, and may emit intense blue or deep blue light. Also provided are methods of producing photoluminescence and electroluminescence, methods of applying the compounds in thin films, and uses of the compounds described herein in a light emitting device, a luminescent probe, a sensor, and/or an electroluminescent device.
Electroluminescent device including an anthracene derivative
申请人:Kondakov Y. Denis
公开号:US20070252521A1
公开(公告)日:2007-11-01
An electroluminescent device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL), the device further containing an electron transport layer (ETL) on the cathode side of the LEL and an organic electron injection layer (EIL) contiguous to the ETL on the cathode side, wherein the ETL contains a monoanthracene compound bearing aromatic groups in the 2-, 9-, and 10-positions.
Methods of making tris(N-aryl benzimidazoles)benzenes and their use in electronic devices
申请人:Guidry A. Mark
公开号:US20080001534A1
公开(公告)日:2008-01-03
Provided are methods for preparing a compound of Formula I:
where the method comprises the steps of:
contacting a compound of Formula II:
with 1,3,5-benzene-tricarbonyl chloride in the presence of a polar aprotic solvent to form an amide adduct; and subsequently condensing the amide with a proximate anilino group present in the adduct in the presence of a condensing agent to form a compound of Formula I wherein R
1
, R
2
, Ar, m, p, and t are as defined in the specification.