A photoelectric conversion element having an electrically conductive support, a photoconductor layer including an electrolyte, a charge transfer layer including an electrolyte, and a counter electrode, in which the photoconductor layer has semiconductor fine particles carrying a metal complex dye represented by the following Formula (1), and a dye-sensitized solar cell; and a metal complex dye and a dye solution, each of which is used in the photoelectric conversion element and the dye-sensitized solar cell,

ML1L2(X).sub.n1.CI.sub.mYFormula (1) in the formula, M represents a metal ion, L1 represents a tridentate ligand having a group L.sup.V represented by the following Formula (LV-1) or (LV-2); L2 represents a bidentate or tridentate ligand including at least one of aromatic ring groups having a specific sp.sup.2 carbon atom to which a substituent is bonded; X represents a monodentate ligand; n1 represents 0 or 1; CI represents a required counterion; and mY represents an integer of 0 to 3,

R.sup.V1R.sup.V2R.sup.V31Formula (LV-1)

CCR.sup.V32Formula (LV-2) in the formulae, R.sup.V1 and R.sup.V2 each independently represent a nitrogen atom or CR.sup.V4, R.sup.V4 represents a hydrogen atom or a substituent, R.sup.V31 represents a fused polycyclic aromatic ring group or a fused polycyclic heterocyclic group, and R.sup.V32 represents a fused polycyclic aromatic ring group or a heteroaryl group.

A photoelectric conversion element having an electrically conductive support, a photoconductor layer including an electrolyte, a charge transfer layer including an electrolyte, and a counter electrode, in which the photoconductor layer has semiconductor fine particles carrying a metal complex dye represented by the following Formula (1), and a dye-sensitized solar cell; and a metal complex dye, a dye solution, and a terpyridine compound, or an esterified product thereof, each of which is used in the photoelectric conversion element and the dye-sensitized solar cell,

ML1L2(X).sub.n1.CI.sub.mYFormula (1) in Formula (1), M represents a metal ion, L1 represents a tridentate ligand having a group L represented by the following Formula (LV-1) or (LV-2); L2 represents a bidentate or tridentate ligand which coordinates to M with an anion, in which a ring including a ring-constituting nitrogen atom which coordinates to M with an lone electron pair has an organic group R.sup.VL: -(R.sup.VL)n.sup.VL; X represents a monodentate ligand; n1 represents 0 or 1; CI represents a required counterion; and mY represents an integer of 0 to 3,

-R.sup.V1=R.sup.V2-R.sup.V3 Formula (LV-1)

CCR.sup.V3 Formula (LV-2) in the formulae, R.sup.V1 and R.sup.V2 each independently represent a nitrogen atom or CR.sup.V4, R.sup.V4 represents a hydrogen atom or a substituent, and R.sup.V3 represents an aryl group or a heteroaryl group; R.sup.VL represents a specific aromatic ring group or the like; and n.sup.VL represents an integer of 0 or more.

An optical filter includes an absorption layer containing a near-infrared absorbing dye with an absorption characteristic in dichloromethane satisfying (i-1) to (i-3). (i-1) In an absorption spectrum of a wavelength of 400 to 800 nm, there is a maximum absorption wavelength .sub.max in 670 to 730 nm. (i-2) Between a maximum absorption coefficient .sub.A of light with a wavelength of 430 to 550 nm and a maximum absorption coefficient .sub.B of light with a wavelength of 670 to 730 nm, the following relational expression: .sub.B/.sub.A65 is established. (i-3) In a spectral transmittance curve, the difference between a wavelength .sub.80 with which the transmittance becomes 80% on a shorter wavelength side than the maximum absorption wavelength with the transmittance at the maximum absorption wavelength .sub.max set to 10% and the maximum absorption wavelength .sub.max is 65 nm or less.

A compound for an organic photoelectric device includes at least one of a compound represented by Chemical Formula 1, a compound represented by Chemical Formula 2 and a combination thereof.

The current invention relates to a compound of formula (I): where X represents a counterion and A represents an amino acid moiety that is cleavable by an enzyme associated with a leukocyte, or a pharmaceutically acceptable salt or solvate thereof.

Halo-organic heterocyclic compounds are described, in which at least two halogen atoms are bound to a nitrogen-containing heterocyclic terminal moiety of the compound, with at least one of such halogen atoms being iodine or bromine. Also described are polymethine dyes based on these heterocyclic compounds, and dendrimeric compounds and conjugates of such polymethine dyes. The polymethine dyes are characterized by enhanced properties, e.g., brightness, photostability, sensitivity and/or selective affinity that make them useful to target cancer cells, pathogenic microorganisms, and/or other biological materials, in applications such as photodynamic therapy, photodynamic antimicrobial chemotherapy (PACT), cancer treatment, selective removal or attachment of biological materials, antimicrobial coating materials, and other diagnostic, theranostic, spectrum shifting, deposition/growth, and analytic applications.

This disclosure provides cyanine dye compounds having linked hydrogen bond-forming groups that can be used for detecting nucleic acids, particularly for fluorescent staining of DNA, in a biological sample. We found that the simultaneous incorporation of at least two hydrogen bond-forming groups (HBGs) into such a nucleic acid stain can provide for crosslinking interactions between the stain and the target nucleic acid, and lead to a significant increase in the detection sensitivity without substantially increasing undesirable cytotoxicity or mutagenicity properties of the dye compounds. The cyanine dye compounds can have a cyanine structure that connects two particular fused heterocycle ring systems, where at least two HBGs are connected to the core structure through linkers. Also provided are nucleic acid complexes including the cyanine dye compounds, and methods of using the compounds to detect nucleic acids in a biological sample.

It is an object of the present invention to provide a cyanine-based coloring composition having higher heat resistance, as compared with a conventional coloring composition. The present invention relates to a compound represented by the following general formula (1), a polymer having a monomer unit derived from the compound, along with a coloring composition, a coloring composition for a color filter, and a colored resin comprising the above-described compound or the above-described polymer.

##STR00001##

Nanoparticles comprising surface-enhanced Raman scattering (SERS) reporter molecules of the formula A-Y and methods of their use are disclosed, wherein A is: ##STR00001##
wherein X.sub.1 is CR.sub.4 or N; and Y is selected from the group consisting of: ##STR00002##

Electrowetting element including a compound comprising a plurality of colorant moieties and a linker. The plurality of colorant moieties includes a first colorant moiety having a first net dipole and a second colorant moiety having a second net dipole. The plurality of colorant moieties are linked by and disposed around the linker so that the first net dipole and the second net dipole at least partially cancel each other.