Synthesis, characterization and air stable semiconductor properties of thiophene-condensed pyrene derivatives

Vat dyes: promising biocompatible organic semiconductors for wearable electronics applications

“…31 VO9 has a pyrene core and shows charge-carrier mobilities comparable to that of some other pyrene derivatives. 32 It should be noted that VG1, which differs from VB20 by the presence of two additional methoxy substituents in 17 and 18 positions, displayed no n-type transport and behaved more like a poor p-type semiconductor. It is known that methoxy groups are strong electron-donating substituents, so switching the type of transport due to such substitution is an expectable electronic effect.…”

Recent Advances in Heterocyclic Nanographenes and Other Polycyclic Heteroaromatic Compounds

“…Compounds 178.2a – c were somewhat more fluorescent (Φ = 0.1–0.13) than their pyrimidine parents 178.1a – c (Φ = 0.05–0.07). Further examples include the mesomorphic fused triphenylene 178.4 obtained by FeCl 3 -mediated cyclodehydrogenation and bishelicenes 178.6a – e , prepared using Mallory photocyclization. , 178.6a , b were investigated as active layers in p-type OFET top contact devices, exhibiting unusual electronic stability.…”

“… a Reagents and conditions: (a) I 2 , MeCN, UV light irradiation, rt, 130 h ( 178.1a ), 30 h ( 178.1b ), 150 h ( 178.1c ); (b) iron­(III) chloride, nitromethane, 0 °C, 1.5 h; (c) , I 2 , benzene, hν. …”

Synthesis of Two Novels-Shaped Dibenzo[c,l] Chrysene Derivatives, Crystal Structure, and the Evaluation of their Photophysical Properties

“…We employed the typical Wittig and iodine-assisted photocyclization strategy for the synthesis of these molecules [17,18]. Earlier, we reported the synthesis of various kinds of polyaromatic compounds and evaluated their organic photoelectronic properties [19][20][21][22]. We believe that this study may be helpful to the material chemists in designing new materials with a view to achieve desired performance in devices and circuits.…”