The invention relates to a composition for organic electroluminescent element, which comprises: a solvent; and a compound group for organic electroluminescent element that is constituted of at least two kinds of compounds which each have a molecular weight of 3,000 or less and have a structure comprising a plurality of aromatic ring groups linked to each other, wherein the compound group comprises: a compound 1; and another compound an satisfying a specific condition.

An organic electroluminescent element that uses a compound expressed by the following general formula emits dark blue light and exhibits little change in chromaticity during brightness modulation. (n1 is an integer from 0 to 8; the R.sup.1 [groups] are each independently a substituent substituted for a hydrogen atom of the pyrene skeleton; X is CR.sup.aR.sup.b (R.sup.a and R.sup.b are each independently a hydrogen atom or a substituent), O, S, or SiR.sup.dR.sup.e (R.sup.d and R.sup.e are each independently a hydrogen atom or a substituent); and A.sup.1 to A.sup.4 represent each independently either N or CR.sup.f (R.sup.f represents a hydrogen atom or a substituent, and two adjacent R.sup.f [groups] may jointly form a saturated or unsaturated ring, but no more than two rings may be formed jointly by two or more of the R.sup.f [groups]).)

An organic electroluminescent element comprising a substrate, a pair of electrodes including an anode and a cathode, disposed on the substrate, and at least one organic layer which is arranged between the electrodes and which includes a light emitting layer, wherein the organic layer contains a compound represented by general formula (1) in at least one layer. The organic electroluminescent element has a high luminous efficiency, excellent blue color purity, and little chromaticity change due to drive deterioration. (In the formula, the two Xs either both represent an O atom or both represent an S atom, and R.sup.1-R.sup.10 each independently represents a hydrogen atom or a substituent group).

Provided is a photoelectric conversion element including: a first electrode that includes a photosensitive layer containing a light absorbing agent on a conductive support; and a second electrode that is opposite to the first electrode. The light absorbing agent includes a compound having a perovskite-type crystal structure that includes a cation of an element of Group 1 in the periodic table or a cationic organic group A, a cation of a metal atom M other than the element of Group 1 in the periodic table, and an anion of an anionic atom or atomic group X. A hole transport layer, which includes a hole transporting material, is provided between the first electrode and the second electrode. The hole transporting material includes a compound represented by any one of the following Formulae (1) to (4).

##STR00001##

The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specific structure that contains a fluoranthene skeleton.

There is disclosed a compound Formula I

##STR00001## In Formula I: Z is CR.sup.4R.sup.5, CCR.sup.4R.sup.5, SiR.sup.4R.sup.5, GeR.sup.4R.sup.5, NR.sup.4a, PR.sup.4a, P(O)R.sup.4a, O, S, SO, SO.sub.2, Se; SeO, SeO.sub.2, Te, TeO, or TeO.sub.2; R.sup.1-R.sup.3 are the same or different at each occurrence and are D, aryl, heteroaryl, alkyl, amino, silyl, germyl, deuterated aryl, deuterated heteroaryl, deuterated alkyl, deuterated amino, deuterated silyl, or deuterated germyl, where two groups selected from R.sup.1, R.sup.2, and R.sup.3 can be joined together to form a fused ring; R.sup.4-R.sup.5 are the same or different at each occurrence and are H, D, aryl, heteroaryl, alkyl, amino, silyl, germyl, deuterated aryl, deuterated heteroaryl, deuterated alkyl, deuterated amino, deuterated silyl, or deuterated germyl; R.sup.4a is alkyl, silyl, germyl, aryl, or a deuterated analog thereof; a is an integer from 0-4; b and c are the same or different and are an integer from 0-3.

A solid phase reagent and method for simultaneously capturing and fluorescently labeling an analyte with multiple reactive sites to provide a mono-labeled analyte are disclosed. The reagent can be used in the method and comprises a plurality of analyte-reactive groups tethered to a porous solid phase, wherein each analyte-reactive group is covalently attached to a fluorescent group either directly or indirectly, wherein the distance between adjacent analyte-reactive groups is greater than the gyration radius of a captured analyte; the fluorescent group is covalently attached to a cleavable anchor group either directly or through a first spacer; and the cleavable anchor group is covalently attached to the solid phase either directly or through a second spacer, wherein the solid phase is a porous solid or a porous gel.

The invention relates to a composition for organic electroluminescent element, which comprises: a solvent; and a compound group for organic electroluminescent element that is constituted of at least two kinds of compounds which each have a molecular weight of 3,000 or less and have a structure comprising a plurality of aromatic ring groups linked to each other, wherein the compound group comprises: a compound 1; and another compound n satisfying a specific condition.

The present specification describes a multicyclic aromatic ring compound having a novel structure and an organic light emitting device using the same.

The invention concerns heterocyclic compounds and electronic devices, in particular organic electroluminescent devices, containing these compounds.