1493783-46-2Relevant academic research and scientific papers
Fluorescence response of pyridinyl- and/or dibutylaniline-Capped 2,6,9,10-Tetravinylanthracenes to metal ions
Zheng, Meng,Sun, Mingxiao,Zhang, Deteng,Liu, Tongliang,Xue, Shanfeng,Yang, Wenjun
, p. 109 - 115 (2014)
The solution photophysical properties of a series of dibutylaniline- and/or pyridine-containing 2,6,9,10-tetrarylvinylanthracene cruciforms with and without metal ions have been determined. The results show that the dibutylaniline-containing cruciforms show stronger intermolecular charge transfer and obviously red-shifted emission spectra than the only pyridine-containing ones, and fluorescence responses of these cruciforms to select several metal ions are also different. The alkali K+, alkaline-earth Mg2+ and Ca2+ hardly affect the emission behavior, but the transition Cu2+ and Zn2+ could red-shift, blue-shift or quench the fluorescence emissions, depending on the nature of end groups. The fluorescence responsive behaviors of the different cruciforms to metal ions are explained qualitatively through their spatially separated frontier molecular orbital (FMO) features and coordination-induced FMO changes. These findings suggest that these anthracene-centered cruciforms could be promising functional scaffolds selectively for differential transition metal sensor arrays.
Cruciform 9,10-distyryl-2,6-bis(p-dialkylamino-styryl)anthracene homologues exhibiting alkyl length-tunable piezochromic luminescence and heat-recovery temperature of ground states
Zheng,Zhang,Sun,Li,Liu,Xue,Yang
, p. 1913 - 1920 (2014/03/21)
A series of 2,6-bis(p-dialkylaminostyryl)-9,10-distyrylanthracene (FCn) cruciforms with N-alkyl chains of different lengths have been synthesized, and their aggregation-enhanced fluorescence and piezochromic luminescence (PFC) behaviours are investigated. These 9,10-distyrylanthracene-containing cruciforms exhibit relatively low fluorescence quantum yields (Φ) in THF solution (Φ ≈ 10%) and moderate aggregation-enhanced emission in aqueous media (Φ ≈ 25%), but strong and chain length-dependent solid-state fluorescence emission. Grinding and pressing experiments indicate that they are all effective PFC materials in terms of mechanical stress-induced spectral shifts (ΔλPFC = 23-54 nm), moreover, the longer alkyl-containing FCn shows a larger ΔλPFC. Powder X-ray diffraction and differential scanning calorimetry measurements reveal that the transformation between the crystalline and amorphous states upon external stimuli is responsible for the reversible PFC behaviour. It is found that increasing the N-alkyl length could effectively decrease the cold-crystallization temperature of the ground states to render the PFC states with a tunable heat-recovering temperature, and ground FC10 and FC12 solids can recover spontaneously to their original states at room temperature.
