本文报道了新型氢键结合体1(3).CA的形成,该反应是通过将氰尿酸(CA)与三聚氰胺衍生物1混合而获得的,其中三个可能的H键阵列中的两个已被封闭。四个成分通过9个氢键结合在一起,形成一个刚性平面结构,其中一个中央CA(三个ADA图案:A =受体,D =供体)被氢键合到三个外围的三聚氰胺衍生物(DAD图案)上。此外,描述了氢键结合的组装体2-4.CA和CA的合成和组装研究,该组装体由三种共价连接的三聚氰胺衍生物组成。组件2-4.CA的整体热力学稳定性优于1(3).CA(I(Tm)= 9 vs 3.6)。通过(1)1 H NMR光谱法和MALDI-TOF质谱法确认了在氯仿中2.CA络合物的存在。用手性或荧光基团(R(3))替代三聚氰胺使得能够通过CD和荧光光谱研究组件。滴定实验表明,即使在极性溶剂(例如THF和CH(3)OH)存在下,稳定性也大大增强。根据溶剂的极性,观察到平面组装单元之间的堆叠。
Synthesis and Fluorescence Properties of Carbazole Based Asymmetric Functionalized Star Shaped Polymer
作者:Merve Guzel、Erhan Karatas、Metin Ak
DOI:10.1149/2.0741702jes
日期:——
A fluorescent group containing novel asymmetric functionalized star shaped derivative (TPC) of 2,4,6-trichloro-1,3,5-triazine containing 2-hydroxy carbazole and 1-pyrenemethylamine was designed, synthesized and characterized. Polymerization of TPC was achieved in acetonitrile/lithium perchlorate (ACN/LiClO4) solvent/electrolyte couple via electrochemical techniques. Electrochromic properties of the PTPC were investigated via spectroelectrochemistry, kinetic and colorimetry studies. Optoelectrochemical investigation of PTPC displayed electronic transitions at 308, 460 and 780 nm which are correspond to pi-pi* transition, polaron, and bipolaron band formations, respectively. Moreover, electrochromic and fluorescence properties of PTPC were investigated. For the first time, this study reports the huge potential of asymmetric functionalized triazine compounds as electrochromic material. (C) 2016 The Electrochemical Society. All rights reserved.