Hole-transporting properties of organosilanylene–diethynylpyrene and diethynylanthracene alternating polymers. Applications to patterning of light-emitting images

Searching the Hearts of Graphene-like Molecules for Simplicity, Sensitivity, and Logic

“…Searching the hearts of graphene-like molecules for simplicity, sensitivity and logic. Equation (38) allows us to generate a low-order power series for M-functions, as follows: Since 𝑀(𝐸) = 𝐷(𝐸)𝐺(𝐸), in what follows, it will be convenient to define 𝜀 = (𝐸 − 𝐸 𝐻𝐿 )/𝐷(𝐸 𝐻𝐿 ) and therefore to order 𝜀 2 , 𝐺(𝐸) = 𝐺(𝐸 𝐻𝐿 )[1 − 𝜀𝑀(𝐸 𝐻𝐿 ) + 𝜀 2 𝑀 2 (𝐸 𝐻𝐿 )] + … (39) and…”

Optical properties of a series of monosilylene–oligothienylene copolymers and the application to light-emitting diodes

“…4 This suggests that they could be good candidates for color-tunable luminescent materials in electroluminescent (EL) devices, although the attention has so far been focused mainly on applications of these copolymers to hole-transporting materials. 5,6 Therefore, it is interesting to study their possible applications to the emitting materials in EL devices. Up to the present time, to the best of our knowledge, only one paper has reported briefly on the EL properties of the alternating copolymers consisting of organosilicon and oligothiophene with the expensive Mg-Ag alloy being used as the cathode.…”

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

“…Recently, this problem is mainly solved by both the introduction of long or big branched side chains into pyrene molecules and co-polymerization with a suitable bulky co-monomer. Very recently, it was reported that pyrene derivatives are useful in OLEDs applications (Otsubo et al, 2002;Thomas et al, 2005;Ohshita et al, 2003;Jia et al, 2004;Moorthy et al, 2007) as hole-transporting materials (Thomas et al, 2005; or host blue-emitting materials (Otsubo et al, 2002;Ohshita et al, 2003;Jia et al, 2004;Moorthy et al, 2007). To date, various pyrene-based light-emitting materials have been disclosed in recent literatures, which can be roughly categorized into three types of materials: (1) Functionalized pyrene-based light-emitting monomers; (2) Functionalized pyrene-based lightemitting dendrimers; and (3) Functionalized pyrene-based light-emitting oligomers and polymers.…”

“…Conjugated polymers such as polyphenylvinylene (PPV) and its derivatives are known as visible light emitters and have been widely used in the fabrication of organic light-emitting diodes (OLEDs) (Son et al, 1995). Only a few numbers of investigations concerning on the attachment of pyrene to the polymeric chain (Rivera et al, 2002) or the use of pyrene along the polymeric backbone (Ohshita et al, 2003;Mikroyannidis et al, 2005;Kawano et al, 2008;Figueira-Duarte et al, 2010) were reported as model systems or new materials for molecular electronics.…”