The invention provides new cyanine dyes for staining living cells, providing fluorescence emission in red, green and yellow, thus allowing “multichannel” staining. The dyes are binding to nucleic acids and allow the observation of the stained cells, for the staining does not negatively interfere with the viability of the stained cells. The inventive dyes thus can advantageously be used for pathogen-host investigations or any other type of investigation of cell-cell-interactions, for the natural behavior of the stained cells (microorganisms, pathogens etc.) can easily be observed.

The invention provides new cyanine dyes for staining living cells, providing fluorescence emission in red, green and yellow, thus allowing “multichannel” staining. The dyes are binding to nucleic acids and allow the observation of the stained cells, for the staining does not negatively interfere with the viability of the stained cells. The inventive dyes thus can advantageously be used for pathogen-host investigations or any other type of investigation of cell-cell-interactions, for the natural behavior of the stained cells (microorganisms, pathogens etc.) can easily be observed.

The invention provides a novel class of cyanine dyes that are functionalized with sulfonic acid groups and a linker moiety that facilitates their conjugation to other species and substituent groups which increase the water-solubility, and optimize the optical properties of the dyes. Also provided are conjugates of the dyes, methods of using the dyes and their conjugates and kits including the dyes and their conjugates.

Provided is an organic light-emitting device including a first electrode, a second electrode, an emission layer between the first electrode and the second electrode, and a hole transport region between the first electrode and the emission layer, wherein the hole transport region includes an auxiliary layer, the auxiliary layer including at least one amine-based compound represented by Formula 1: ##STR00001##
where R.sub.11, R.sub.12, R.sub.13, R.sub.14, R.sub.15, R.sub.16, X.sub.11, L.sub.11, L.sub.12, L.sub.13, a11, a12, a13, b15, and b16 are as defined in the specification.

Provided is an organic light-emitting device including a first electrode, a second electrode, an emission layer between the first electrode and the second electrode, and a hole transport region between the first electrode and the emission layer, wherein the hole transport region includes an auxiliary layer, the auxiliary layer including at least one amine-based compound represented by Formula 1: ##STR00001##
where R.sub.11, R.sub.12, R.sub.13, R.sub.14, R.sub.15, R.sub.16, X.sub.11, L.sub.11, L.sub.12, L.sub.13, a11, a12, a13, b15, and b16 are as defined in the specification.

Cyanine dyes with improved fluorescence intensity and photostability.

Cyanine dyes with improved fluorescence intensity and photostability.

The present disclosure relates to chemical dyes useful for staining and imaging of cells. In particular, the disclosure relates to compound of Formula I, method of preparation thereof, and it's use as a fluorescent probe for staining and/or imaging mitochondria in cells, tissues or animals, resulting in a range of applications including, but not limiting, to sensing local ordering or viscosity of mitochondria, tracking mitochondrial mobility, comparing & evaluating mitochondrial function, local ordering, microviscosity and dynamics. Said dyes have additional advantages including, but not limiting, to low toxicity, longer shelf-life, generate little or no reactive species upon long term light irradiation and do not perturb the functionality of the mitochondria in cells compared to prior art dyes. ##STR00001##

The present disclosure relates to chemical dyes useful for staining and imaging of cells. In particular, the disclosure relates to compound of Formula I, method of preparation thereof, and it's use as a fluorescent probe for staining and/or imaging mitochondria in cells, tissues or animals, resulting in a range of applications including, but not limiting, to sensing local ordering or viscosity of mitochondria, tracking mitochondrial mobility, comparing & evaluating mitochondrial function, local ordering, microviscosity and dynamics. Said dyes have additional advantages including, but not limiting, to low toxicity, longer shelf-life, generate little or no reactive species upon long term light irradiation and do not perturb the functionality of the mitochondria in cells compared to prior art dyes. ##STR00001##

The present disclosure relates to chemical dyes useful for staining and imaging of cells. In particular, the disclosure relates to compound of Formula I, method of preparation thereof, and it's use as a fluorescent probe for staining and/or imaging mitochondria in cells, tissues or animals, resulting in a range of applications including, but not limiting, to sensing local ordering or viscosity of mitochondria, tracking mitochondrial mobility, comparing & evaluating mitochondrial function, local ordering, microviscosity and dynamics. Said dyes have additional advantages including, but not limiting, to low toxicity, longer shelf-life, generate little or no reactive species upon long term light irradiation and do not perturb the functionality of the mitochondria in cells compared to prior art dyes.

##STR00001##