(meta)stable states is crucial for the development of smart solid‐state luminescent materials. However, the design of luminophores with tunableaggregationstates is remaining a grand challenge. Herein, we present a family of mechanochromicluminophores with tunable metastable states, based on the dynamically controllable π–π stacking of the flexibleπ‐conjugated structure of 2,5‐diarylamino‐terephthalates
Disclosed is a process for forming a N,N′-diarylquinacridone compound comprising the step of reacting a 1,4-dialkylcarboxylate-2,5-bis(N -arylamino) benzene with an iodoaryl compound to form the corresponding 2,5 -bis(N-diarylamino) compound. The process is versatile and provides high yields and purity for the synthesis of N,N′-diarylquinacridone compounds.
and their bar-shaped singlecrystals with a large size and a smooth surface have been obtained via the solvent-evaporation method. These crystals exhibit bright emission with fluorescence quantum yields higher than 0.2. They display the waveguide property, and low optical loss coefficients for waveguide have been determined for the crystal of one compound. In addition, the crystal can cause linear polarization
摘要通过一步反应合成了一系列结构简单的2,5-二氨基对苯二甲酸酯,通过溶剂蒸发法得到了大尺寸且表面光滑的棒状单晶。这些晶体显示出明亮的发射,荧光量子产率高于0.2。它们显示出波导特性,并且已针对一种化合物的晶体确定了波导的低光损耗系数。另外,该晶体可以引起从其发出的光的线性偏振,其偏振对比度为0.70。最重要的是,这些晶体可以实现放大的自发发射(ASE),包括红色ASE,其能量阈值为72–198 kW / cm 2,并且增益系数高,