The present disclosure provides a light emitting device having an anode and a cathode, and a first layer and a second layer disposed between the anode and the cathode.

The present disclosure provides a light emitting device having an anode and a cathode, and a first layer and a second layer disposed between the anode and the cathode.

A high-molecular-weight compound having at least one substituted triarylamine structural unit represented by the following general formula (1), further including a structural unit having at least one aromatic hydrocarbon ring or a structural unit having a triarylamine skeleton in addition to the at least one substituted triarylamine structural unit, and having a weight average molecular weight of 10,000 or more and 1,000,000 or less in terms of polystyrene and no a crosslinker, wherein the high-molecular-weight compound is used in an organic EL device as a constituent material of at least one organic layer. A polymer material having excellent hole injection/transport performance, electron blocking capability, high heat resistance, and high stability in a thin-film state for use in a polymer organic EL device, and an organic EL device having a low drive voltage, high light emission efficiency, and a long lifetime using this polymer material. ##STR00001##

The present invention provides a novel polymer comprising repeating unit represented by the following Chemical Formula 1, and an organic light emitting device including the same: ##STR00001## Wherein L.sub.1, L.sub.2, Ar.sub.1, Ar.sub.2, Ar.sub.3, R.sub.1 to R.sub.8, o, p and n are described herein.

A polymer compound for use in an electroluminescent device may improve the durability (particularly the luminescence lifespan). The polymer compound includes Structural Unit (A) represented by Chemical Formula (1).

##STR00001##

In Chemical Formula (1), the definition of each substituent is as described in the detailed description.

Embodiments of the invention are directed to yellow/orange-to-transmissive conjugated polymers, a method to prepare the yellow/orange conjugated polymers, and an electrochromic and/or electroluminescent device comprising the neutral state yellow/orange conjugated polymers as one of a plurality of primary subtractive colored conjugated polymers. The yellow/orange conjugated polymers show enhanced redox stability and can have a (D.sub.2Ar.sub.z).sub.n structure with a dioxyheterocycle repeating unit or a (DAr.sub.z).sub.n structure with a dioxythiophene monomer that has at least one substituted carbon to an oxygen of the monomer; and where the one to three Ar groups have at least one carbon to the carbon attached to a D unit substituted that has at least 5 atoms in the substituent. The yellow/orange conjugated polymers show enhanced redox stability. The yellow/orange conjugated polymers are prepared by cross-condensation reactions.

A conjugated polymer comprising a repeat unit of formula (I) wherein R.sup.1 in each occurrence is a substituent; R.sup.2 in each occurrence is independently H or a substituent; X is selected from O, S and NR.sup.3; and R.sup.3 in each occurrence is independently H or a substituent. The polymer may be used as a light-emitting marker in a method of sequencing nucleic acids. The polymer may be used as a method of identifying a target analyte in a sample.

##STR00001##

A conjugated polymer comprising a first repeat unit substituted with at least three ionic groups.

A material comprising an electron-accepting unit of formula (I). According to some embodiments, the present disclosure provides a material comprising an electron-accepting unit of formula (I) wherein Ar is a substituted or unsubstituted benzene or 6-membered heteroaromatic ring containing N and C ring atoms; Ar.sup.1 is a substituted or unsubstituted 5- or 6-membered heteroaromatic ring containing N and C ring atoms; Ar.sup.2 is a substituted or unsubstituted 5- or 6-membered heteroaromatic ring or is absent; Ar.sup.3 is a 5-membered ring or a substituted or unsubstituted 6-membered ring; Ar.sup.4 is a 5-membered ring or a substituted or unsubstituted 6-membered ring or is absent; Ar.sup.5 is a substituted or unsubstituted monocyclic or polycyclic group containing at least one aromatic or heteroaromatic ring; Ar.sup.6 is a substituted or unsubstituted monocyclic or polycyclic group containing at least one aromatic or heteroaromatic ring or is absent; and each X is independently a substituent bound to a carbon atom of Ar.sup.3 and, where present, Ar.sup.4 with the proviso that at least one X group is an electron-withdrawing group and wherein the material further comprises a conjugated electron-donating unit. The material may be a polymer comprising repeat units of formula (I). The material may be a non-polymeric compound. An organic photodetector may contain a bulk heterojunction layer containing an electron acceptor or an electron donor wherein at least one of the electron acceptor and electron donor contains a unit of formula (I).

##STR00001##

A composition contains cyclic low molecular compounds having a constitutional unit represented by the formula (X), and a polymer compound having the same constitutional unit represented by the formula (X). The total value of area percentages determined by liquid chromatography of the cyclic low molecular compounds is 0.1 or more and 1.5 or less when the total value of area percentages determined by liquid chromatography of the cyclic low molecular compounds and the polymer compound is taken as 100,

##STR00001##

a.sup.X1 and a.sup.X2 each independently represent an integer of 0 or more. Ar.sup.X1 and Ar.sup.X3 each independently represent an arylene group, a divalent hetero ring group or the like; Ar.sup.X2 and Ar.sup.X4 each independently represent an arylene group, a divalent hetero ring group and the like; and R.sup.X1 to R.sup.X5 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group and the like.