249919-48-0Relevant academic research and scientific papers
COMPOUNDS CONTAINING A PENTALENE UNIT AND PROCESS FOR THEIR PREPARATION
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, (2015/02/25)
Compound containing a pentalene unit having general formula (I) wherein R1 and R2, equal to or different from each other, are selected from: linear or branched C1-C20, preferably C2-C12, al
Synthesis of a novel ligand containing phenyl pyridine
Yu, Mingxin,Fang, Haiyan,Yue, Youfeng,Chen, Yenchun,Chen, Showan
experimental part, p. 58 - 63 (2010/03/04)
In this article, we provide a new, efficient route to synthesize 2-[3-(3,4-bis(2-ethylhexyloxy)phenyl]phenyl pyridine ligand from readily available starting materials. The target compound was obtained by a condensation reaction and Suzuki coupling reaction. Structures of compounds were demonstrated by 1H NMR, 13C NMR, and high-resolution mass spectrometry. The advantages of this synthetic route are simple operation, mild reaction conditions, and good yields.
Functionalizable polycyclic aromatics through oxidative cyclization of pendant thiophenes
Tovar, John D.,Rose, Aimee,Swager, Timothy M.
, p. 7762 - 7769 (2007/10/03)
We present a general strategy for obtaining large sulfur-containing polycyclic aromatics from thienyl precursors through iron(Ill) chloride mediated oxidative cyclizations. By placing thienyl moieties in close proximity to adjacent arenes, we have directed the oxidized intermediates into controlled cyclization pathways, effectively suppressing polymer formation. Utilizing these cyclized compounds and their thienyl precursors, we have studied cyclization/polymerization pathways of polymers such as poly(2). The unsubstituted positions α to the sulfur atoms within these aromatic cores allowed for efficient halogenation and further functionalization. As a demonstration, we prepared a series of arylene-ethynylene polymers with varying degrees of chromophore aromatization and used them to probe the effects of synthetically imposed rigidity on polymer photophysical behavior. The symmetries and effective conjugation pathways within the monomers play a key role in determining photophysical properties. We observed that rigid, aromatized chromophores generally led to increased excited-state lifetimes by decreasing radiative rates of fluorescence decay.
