59116-22-2Relevant academic research and scientific papers
AIE (AIEE) and mechanofluorochromic performances of TPE-methoxylates: Effects of single molecular conformations
Qi, Qingkai,Liu, Yifei,Fang, Xiaofeng,Zhang, Yumo,Chen, Peng,Wang, Yi,Yang, Bing,Xu, Bin,Tian, Wenjing,Zhang, Sean Xiao-An
, p. 7996 - 8002 (2013)
Two methoxy-substituted tetraphenylethylene (TPE) derivatives, tetra(4-methoxyphenyl)ethylene (TMOE) and tetra(3,4-dimethoxyphenyl)ethylene (TDMOE), were synthesized by McMurry reaction in high yields. The nearly centrosymmetric and natural propeller shape of TMOE and TDMOE excluded intermolecular effects, such as H or J-aggregation and π-π stacking, on their AIE (AIEE) and mechanofluorochromic performance. The crystal structures of TMOE and TDMOE, and theoretical calculations proved that their emission colours are determined by single molecular conjugation. These molecules were used to investigate pure conformational effects on molecular emissions. The spectral properties of these molecules in five environments of crystal(s), THF solution, THF-water binary solution, solidified THF and amorphous states, were investigated. The crystalline to amorphous phase transition by grinding resulted in good mechanofluorochromic performances with high quantum yields and distinguishable emission change, which was further explored as anti-counterfeiting inks on banknotes.
Octamethoxydibenzochrysene: Isolation and X-ray crystallographic characterization of a twisted polyaromatic cation radical
Navale, Tushar S.,Zhai, Linyi,Lindeman, Sergey V.,Rathore, Rajendra
, p. 2857 - 2859 (2009)
The isolation and X-ray crystal structure determination of octamethoxydibenzochrysene (3) cation radical together with DFT calculations allow us to delineate evidence that the complex structural changes (i.e. elongation and shortening of various bonds) in
Divergent and Stereoselective Synthesis of Tetraarylethylenes from Vinylboronates
Stang, Peter J.,Yao, Yisen,Zhang, Minghao,Zhao, Wanxiang
supporting information, p. 20090 - 20098 (2020/09/02)
The synthesis of a new tetraborylethylene (TBE) is reported, and its application in the preparation of [4+0]-tetraarylethenes (TAEs) is elucidated. TAEs have widespread applications in material science and supramolecular chemistry due to their aggregation-induced emission (AIE) properties. The divergent and stereoselective synthesis of [3+1]-, [2+2]-, and [2+1+1]-TAEs via multiple couplings of vinylboronates with aryl bromides is demonstrated. These couplings feature a broad substrate scope and excellent functional group compatibility due to mild reaction conditions. Facile access to various tetraarylethenes is provided. This strategy represents an important complement to the conventional methods employed for the synthesis of TAEs, and would be a valuable tool for synthesizing TAE-based molecules useful in functional materials, biological imaging and chemical sensing.
