Two-Photon Absorption Properties of Alkynyl-Conjugated Pyrene Derivatives
作者:Hwan Myung Kim、Yeon Ok Lee、Chang Su Lim、Jong Seung Kim、Bong Rae Cho
DOI:10.1021/jo800363v
日期:2008.7.1
N-dimethylamino)phenylethynyl groups as the substituent (1−5) have been synthesized and their two-photonabsorption properties were investigated. Comparison of two-photon cross section (δmax) with related compounds reveals that pyrene is as efficient a π-center as anthracene in two-photon materials. Moreover, the two-photon cross section (δmax) increased with the number of substituents reaching at the maximum value
Photophysical properties of 1,3,6,8-tetrakis(arylethynyl)pyrenes with donor or acceptor substituents: their fluorescence solvatochromism and lightfastness
We prepared a series of 1,3,6,8-tetrakis(arylethynyl)pyrenes with donor or acceptor substituents and investigated their photophysical properties. Solvent polarity hardly affected on the UV/vis spectra of all of the tetrakis(arylethynyl)pyrenes used in this study. On the other hand, electron-donating groups, NMe2 and NPh2 groups imparted fluorescence solvatochromicity to the skeleton by intramolecular