Semiconducting nanoparticle

A composition comprising a semiconducting light emitting nanoparticle having at least a core, and optionally one or more shell layers, a compound (I′) represented by chemical formula (III):

• wherein
• R1 is H, D, CN a straight chain alkyl or alkoxy group having 1 to 40 carbon atoms, a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, each of which may be substituted by one or more groups Ra, where in each case one or more CH2 groups may each be replaced by —RaC═CRa—, —C≡C—, Si(Ra)2, Ge(Ra)2, Sn(Ra)2, C═O, C═S, C═Se, C═NRa, P(═O)(Ra), SO, SO2, —O—, NRa, C(═O)O, or C(═O)NRa—, and where one or more H atoms may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• an aromatic ring system or a heteroaromatic ring system having 5 to 40 aromatic ring atoms, each of which may be substituted by one or more groups Ra, and where one or more H atoms may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• R2, R3 are, independently of each other, H, D, CN, a straight chain alkyl or alkoxy group having 1 to 40 carbon atoms, a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, each of which may be substituted by one or more groups Ra, where in each case one or more CH2 groups may each be replaced by —RaC═CRa—, —C≡—C, Si(Ra)2, Ge(Ra)2, Sn(Ra)2, C═O, C═S, C═Se, C═NRa, P(═O)(Ra), SO, SO2, —O—, NRa, —C(═O)O—, or —C(═O)NRa—, and where one or more H atoms may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• or an aromatic ring system or a heteroaromatic ring system having 5 to 40 aromatic ring atoms, each of which may be substituted by one or more groups Ra, and where one or more H atoms may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• Y is O, NH, or S;
• Ra is at each occurrence, identically or differently, H, D, a straight chain alkyl or alkoxy group having 1 to 40 carbon atoms, a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, a branched alkenyl group or alkynyl group having 3 to 40 carbon atoms, an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, wherein in each of the above-mentioned groups one or more H atoms may each be replaced by D, F, Cl, Br, or I, and where two or more adjacent substituents Ra here may optionally form a mono- or polycyclic, aliphatic ring system with one another;
• L is a divalent group selected from a straight-chain alkylene group having 1 to 40 carbon atoms, a branched or cyclic alkylene group having 3 to 40 carbon atoms, a straight-chain alkenylene or alkynylene group having 2 to 40 carbon atoms, or a branched alkenylene group or alkynylene group having 3 to 40 carbon atoms, each of which each may be substituted by one or more groups Ra, where in each case one or more CH2 groups may each be replaced by an arylene group or heteroarylene group having 5 to 40 aromatic ring atoms, Si(Ra)2, Ge(Ra)2, Sn(Ra)2, C═O, C═S, C═Se, C═NRa, P(═O)(Ra), SO, SO2, —O—, NRa, —C(═O)O—, or —C(═O)NRa—, and where one or more H atoms may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, an aralkylene group, a heteroaralkylene group, an alkylarylene group or an alkylheteroarylene group, each of which may be substituted by one or more groups Ra, and where in each case one or more H atoms may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• or a group represented by the following chemical formula (II)
• wherein
• m is an integer of 1 to 50;
• l is an integer of 1 to 25;
• L1 is
• L2 is
• wherein a dashed line indicates a bond to the remainder of the compound and the symbol “*” marks the bond between groups L1 and L2, and wherein each of L1 and L2 may be substituted by one or more groups Ra, where one or more CH2 groups of L1 and L2 may each be replaced by —RaC═CRa—, —C≡C—, Si(Ra)2, Ge(Ra)2, Sn(Ra)2, C═O, C═S, C═Se, C═NRa, P(═O)(Ra), SO, SO2, NRa, or —C(═O)NRa—, and where one or more H atoms in L1 and L2 may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• A3 is a divalent group selected from a straight-chain alkylene group having 1 to 40 carbon atoms, a branched or cyclic alkylene group having 3 to 40 carbon atoms, each of which may be substituted by one or more groups Ra, where in each case one or more CH2 groups may each be replaced by, Si(Ra)2, Ge(Ra)2, Sn(Ra)2, C═O, C═S, C═Se, C═NRa, P(═O)(Ra), SO, SO2, —O—, NRa, —C(═O)O—, or —C(═O)NRa—, and where one or more H atoms may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• an aromatic or heteroaromatic ring system having 5 to 25 aromatic ring atoms, each of which may be substituted by one or more groups Ra, and where one or more H atoms of the aromatic or heteroaromatic ring system may each be replaced by D, F, Cl, Br, I, CN, or NO2;
• and
• M1 denotes a hydrogen atom;
• and
• Z is NH or O;
• and at least one further functional material selected from the group consisting of organic light emitting materials, inorganic light emitting materials, charge transporting materials, host or matrix materials, optically transparent polymers, anti-oxidants or stabilizers, radical quenchers, photo initiators or polymerization initiators, wetting and dispersing agents, scattering particles, reflective index adjusting materials, developer-dissolution promoters, scum removers, adhesion enhancers, polymerization inhibitors, defoaming agents, surfactants and sensitizers.