A method, system, and taggants (tracers) for quantifying zonal flow in a multi-lateral well having a wellbore with a first lateral and second lateral. The technique includes flowing first produced fluid from a formation via the first lateral into production tubing providing a first taggant through a first dosing tubing to the first lateral, and flowing second produced fluid from the formation via the second lateral into the production tubing and providing a second taggant through a second dosing tubing to the second lateral. A produced stream having the first produced fluid and the second produced fluid flows uphole through the production tubing and discharges from the wellbore. The produced stream may be analyzed to measure an amount of the first taggant in the produced stream and an amount of the second taggant in the produced stream.

The present invention relates inter alia to an array comprising i times j array elements, wherein the array elements may comprise at least one quantum dot and/or at least one photoluminescent compound. Further the present invention relates to devices comprising these arrays. The arrays and devices can be used to generate white light with high color purity.

Calcium reacting photoproteins are a class of self-illuminating proteins that emit light upon contact with calcium. Fluorescent Proteins are small proteins that change the color of light when excited. Fluorescent Proteins and Calcium Activated Photoproteins can be used to enhance, dazzle, amaze, startle, and otherwise entertain an audience by their direct application on to the audience, surroundings, the actors, or sprayed on settings as in the newer 4D movies. The disclosure comprises novel Coelenterazine compounds and methods of use, including a simple delivery device for the photoprotein to create unique and novel cinematic, theatrical, stage, movie and musical concert optical effects by their luminous reaction upon contact with surfaces that contain calcium. Calcium is ubiquitous in and on most surfaces and in the environment; it is this unique property of calcium that makes this a novel use of the photoproteins for entertainment.

The present disclosure provides a light emitting device, a production method thereof, and a display panel, for simplifying the production process of light emitting device and improving the performance of the light emitting device. The light emitting device in the present disclosure comprises a white light emitting layer comprising a polyfluorene blue light material, and red light quantum dots and green light quantum dots doped in the polyfluorene blue light material.

Provided herein are functionalized pegylated cyanine compounds containing a reactive group suitable for labeling a biomolecule or pharmaceutical compositions and methods of use thereof. In one embodiment, the compounds are based on formula I shown below.

##STR00001##

In other embodiments, the compounds can be pegylated at one or more of the following locations R.sup.1, R.sup.4, R.sup.6, R.sup.9, or L.

The present invention relates inter alia to an array comprising i times j array elements, wherein the array elements may comprise at least one quantum dot and/or at least one photoluminescent compound. Further the present invention relates to devices comprising these arrays. The arrays and devices can be used to generate white light with high color purity.

A photochromic optical article is provided, which includes: an optical substrate; a photochromic layer over a surface of the optical substrate, wherein the photochromic layer includes a photochromic compound; and a protective layer over the photochromic layer, wherein the protective layer includes a matrix that includes residues of an ethylenically unsaturated radically polymerizable material that includes at least one allophanate group. A method of forming the photochromic optical article is also provided.

Organic electroluminescent element capable of conveniently and precisely establishing the emission color of the element. The organic electroluminescent element includes a pair of electrodes and a light-emitting layer provided between the electrodes and presents an emission color at the coordinate Ao (Xo, Yo) in CIE 1931 chromaticity coordinate system. The light-emitting layer contains in the same layer, a light emitting material A1 that presents an emission color at the coordinate A1 (x1, y1) in the CIE 1931 chromaticity coordinate system and a light emitting material A2 that presents an emission color at the coordinate A2 (x2, y2) in the CIE 1931 chromaticity coordinate system; a distance L.sub.Ao-A1 between the coordinates Ao (Xo, Yo) and A1 (x1, y1) in the CIE 1931 chromaticity coordinate system satisfies L.sub.Ao-A10.20; and a distance L.sub.A1-A2 between the coordinates A1 (x1, y1) and A2 (x2, y2) in the CIE 1931 chromaticity coordinate system satisfies 0.13L.sub.A1-A20.35 s.

Novel compounds in the classes of Imidazo[1,2-]pyrazines and Imidazo[1,2-]quinoxalines with a methoxy group modification show unique spectral properties when used as a substrate for luciferases and photo-proteins. Methoxy e-Coelenterazine an Imidazo[1,2-] quinoxaline shifts the emission wavelength by 80 nm to blue light compared to e-Coelenterazine, using Renilla reniformis luciferase. The novel analogs described here are useful in combination with fluorescent proteins to create BRET (bioluminescent resonance energy transfer) and for other luminescent assays. In addition these novel compounds can be used in novelty items and for entertaining purposes to create different light emitting colors using the same luciferase or photoprotein.

Described herein are aqueous soluble polymersomes that encapsulate one or more hydrophobic fluorescent polymers and methods of their preparation and use.