Organic field-effect transistors based on two phenylene–thiophene oligomer derivatives with a biphenyl or fluorene core

Preparation of Micro-Patterned CaMn7O12 Ceramic Films via a Photosensitive Sol-Gel Method

“…While in the gel film, the chelate molecules exist in a stacked form, then causing intermolecular electron transfer. The migration of electrons leads to the variation of energy levels and band, resulting in the wideness of the UV absorption spectrum of the CaMn 7 O 12 gel film [33,34]. As the irradiation time is prolonged, the characteristic absorption peak that characterizes the chelate content gradually became smaller, indicating that the corresponding coordinated chelate in the gel film was continuously photo-decomposed and the concentration of the coordinated chelate decreases.…”

Phthalimide–thiophene-based conjugated organic small molecules with high electron mobility

“…This packing orientation, oen referred to as H-aggregation, 43 has been demonstrated in many systems with high charge carrier mobilities. 27,[44][45][46][47][48][49][50] In an effort to understand the extent to which phthalimide-thiophene materials undergo H-aggregation, we systematically varied the length of the thiophene core and terminal alkyl chains. Target molecules are shown in Fig.…”

Synthesis and Properties of Conjugated Macrocycles Containing 2,7-Bis(2-thienyl)-9H-fluoren-9-one Units

“…Small variations in E 1/2 (<50 mV relative to 1 ) suggest that the LUMO is localized to the 9-fluorenone moiety. Linear and cyclic single donor–acceptor molecules exhibited ill-defined and largely irreversible oxidation behavior except for the hydrogenated precursor 15 that showed a single quasi-reversible anodic event ( E 1/2 = 0.74 V) attributable to the 4,4′-bis­(2-thienyl)­biphenyl moiety . Upon aromatization of hydrogenated precursors 15 and 18 to form 16 and 19 , respectively, DPV revealed several irreversible anodic events >1.0 V that can be attributed to newly formed 2,5-diphenyl­thiophene and/or 1,4-bis­(2-thienyl)­benzene groups .…”