Synthesis of t-butylated diphenylanthracene derivatives as blue host materials for OLED applications

Synthesis and fluorescence emission properties of 1,3,6,8-tetraarylpyrenes

“…59 nm) and the tetrakis-phenyl-substituted pyrene 12 [13] arising from the increasing numbers of substituents compared with the parent pyrene 1. In the present pyrenyl-substituted pyrenes (6)(7)(8), the order is 6 < 7a/7b < 8, implying that the energy gap between ground state and excited state decreases in this order ( Table 2). For example, the emission maxima of the pyrenyl-substituted pyrenes 6, 7a/7b, and 8, consecutively shifted to longer wavelengths at 432, 451 and 465 nm respectively ( Figure 4a), in a manner similar to their absorption maxima.…”

“…naphthalene, anthracene, pyrene, perylene, etc.) and their derivatives are suitable for developing RGB emitters for OLED applications owing to their excellent fluorescent properties [5][6][7][8][9][10]. In particular, these compounds have strong -electron delocalization characteristics and can be substituted with a range of functional groups, which may be used for OLED materials with a tunable wavelength.…”

Synthesis of Molecular Motors Incorporating para‐Phenylene‐Conjugated or Bicyclo[2.2.2]octane‐Insulated Electroactive Groups

“…Ferroceneboronic acid, acrylonitrile and phenylacetone were purchased from Aldrich. Bromo h 5 -1,2,3,4,5-penta-(p-bromophenyl)cyclopentadienyl dicarbonyl ruthenium(II), [6] potassium hydrotris [6-(ethoxycarbonyl)indazol-1-yl]borate [16] and 4-tert-butylphenyl boronic acid [19] was prepared according to literature procedures. Toluene was dried over CaH 2 and THF over sodium with benzophenone.…”

Synthesis and Photophysical Properties of Pyrene-Based Multiply Conjugated Shaped Light-Emitting Architectures: Toward Efficient Organic-Light-Emitting Diodes

“…Some recent advanced applications of pyrene include fluorescent labelling of oligonucleotides for DNA assay (Yamana et al, 2002), electrochemically generated luminescence (Daub et al, 1996), carbon nanotube functionallization (Martin et al, 2004), fluorescence chemosensory (Strauss  Daub, 2002;Benniston et al, 2003), design of luminescence liquid crystals (de Halleux et al, 2004), supermolecular self-assembly (Barboiu et al, 2004), etc.. On the other hand, as mentioned above, PAHS (e. g. naphthalene, anthracene, perylene, fluorene, carbazole, etc.) and their derivatives have been developed as RGB emitters in OLEDs because of their promising fluorescent properties (Jiang et al, 2001;Balaganesan et al, 2003;Shibano et al, 2007;Liao et al, 2007;Thomas et al, 2001). In particular, these compounds have a strong -electron delocalization character and they can be substituted with a range of functional groups, which could be used for OLEDs materials with tuneable wavelength.…”