Photochemical Cleavage of the Axial Group Attached to the Central Carbon Atom of Triazatriangulene
作者:Soichi Yokoyama、Takashi Hirose、Kenji Matsuda
DOI:10.1246/cl.140897
日期:2015.1.5
Photocleavage reaction of triazatriangulene (TATA) leuco derivatives bearing axial substituents proceeded quantitatively in polar solvents with quantum yields (Φr) of up to 0.56. The photoreaction ...
Synthesis of Functionalized Triazatriangulenes for Application in Photo-Switchable Self-Assembled Monolayers
作者:Jens Kubitschke、Christian Näther、Rainer Herges
DOI:10.1002/ejoc.201000650
日期:2010.9
Various triazatriangulenes are synthesized by nucleophilic attack at the central C atom of triazatriangulenium ions. The molecular functions, especially azobenzenes, are fixed via an ethynyl linker by in situ deprotection of trimethylsilyl-alkynes. The structure of two of these molecules is further investigated by X-ray crystallography. The photo-induced trans/cis-isomerization of the azobenzene substituted
各种三氮杂三氮杂环烯是通过对三氮杂三氮杂环鎓离子的中心 C 原子进行亲核攻击来合成的。分子功能,尤其是偶氮苯,通过三甲基甲硅烷基-炔烃的原位脱保护通过乙炔基接头固定。通过 X 射线晶体学进一步研究了其中两个分子的结构。在溶液中对偶氮苯取代衍生物的光诱导反式/顺式异构化进行了分析,并显示出制备可切换功能化单层的巨大前景,因为三氮杂三烯以其在金表面的自组装而闻名。[1] .
Mounting Freestanding Molecular Functions onto Surfaces: The Platform Approach
作者:Belinda Baisch、Diego Raffa、Ulrich Jung、Olaf M. Magnussen、Cyril Nicolas、Jerome Lacour、Jens Kubitschke、Rainer Herges
DOI:10.1021/ja807923f
日期:2009.1.21
A modular system has been developed to mount molecules upright onto metal surfaces in a well controlled geometry. The approach is based on a reactive platform (triazatriangulenium salt) with an electrophilic center. Functional molecules are attached via C-C bond formation. The distance from the surface can be varied by a spacer, and the distance of the functional units from each other by the size of the platform. Self-assembly of the parent triazaangulenium salt as welt as the functionalized platforms on Au(111) surfaces results in stable, hexagonally ordered adlayers.