In some embodiments, conjugated polymers and oligomers are described herein, which can demonstrate white light or substantially white light emission, thereby reducing or precluding reliance on layered or blended polymer constructions for organic white light emitting devices.

This disclosure relates generally to electrochromic polymers that include a plurality of π-conjugated chromophores in spaced relation with one another, and a plurality of conjugation-break spacers (CBSs), where at least one CBS separates adjacent chromophores. The chromophores may be colored in the neutral state, and multicolored to transmissive in different oxidization states.

A carbazole compound represented by Formula 1: ##STR00001## wherein in Formula 1, groups and variables are the same as defined in the specification.

OLED materials having the formula: T-A(-S-B(-P-B)m-S-A)n-T where A are independently selected rod-shaped, rigid molecular core units, S are independently selected flexible spacer units, B are polymerisable crosslinking groups independently selected, P are spacer groups independently selected, T are independently selected end groups, m are independently selected from values of from 1 to 4, n is equal to I to 3.

The present disclosure provides a white-light block polymer, an ink composition, and a manufacturing method thereof. The white-light block polymer makes it only necessary to print one ink when using inkjet printing, thereby simplifying inkjet printing processing and meanwhile preventing a crosstalk problem of pixels having different colors of light. The present disclosure makes the ink composition suitable for inkjet printing by properly mixing the white-light block polymer, an organic solvent, a surface tension modifier, and a viscosity modifier in a suitable ratio.

The present disclosure provides for the development and applications of monomeric, oligomeric and/or polymeric semiconductor materials comprising a five-membered heteroaromatic unit (e.g., thiophene; furan; selenophene; etc.) that includes an acrylyl or an acrylyl-like (—C═C—CO—) side chain. The semiconductor materials can be used as organic semiconductors for use in electronic, optical, or optoelectronic devices such as organic thin film transistors and organic photovoltaics. The disclosed semiconductor materials (e.g., semiconducting polymer compounds) can be used as high performance semiconductors (e.g., for organic solar cells or organic photovoltaics (OPVs)), and the disclosed semiconductor materials can be used for other devices (e.g., organic thin film transistors (OTFTs) and sensors, etc.).

Water-soluble, fluorescent particles and compositions, kits, and methods of making and using such particles are disclosed. Processes for preparing fluorescent particles and for controlling the size, polydispersity and optical properties of such particles also are provided.

The present invention relates to a fluorescently-tagged (co)polymer and use thereof useful as a scale inhibitor in industrial water systems. Said (co)polymer comprises a (i) reactive fluorescent compound selected from a benzodiazole compound (ii) at least one monoethylenically unsaturated acid monomer, and (iii) optionally, at least one monoethylenically unsaturated acid-free monomer.

Disclosed is an aqueous fluorescent ink and a preparation method and use thereof. The aqueous fluorescent ink provided by the present disclosure includes 0.10%-0.14% of polystyrene micro-spheres, 0.010%-0.014% of fluorescent dyes, 0.4%-0.6% of surfactants, and the balance of water. The present disclosure uses polystyrene micro-spheres as a fluorescent dye carrier, which is colorless and transparent under ordinary daylight and completely invisible, and displays fluorescence only when irradiated by ultraviolet light and has high fluorescence intensity. The surfactant makes the polystyrene fluorescent micro-spheres uniformly dispersed in the fluorescent ink, and the stability of the fluorescent ink is improved. Water is used as a solvent, which has excellent safety and environmental friendliness. The accuracy of the printed patterns can reach 30 μm, which can help realize large-format ultra-high-precision patterned anti-counterfeiting encryption printing. Through precision printing, the two-dimensional code can be implemented with one code for one object, and has excellent anti-counterfeiting ability.

Water-soluble, fluorescent particles and compositions, kits, and methods of making and using such particles are disclosed. Processes for preparing fluorescent particles and for controlling the size, polydispersity and optical properties of such particles also are provided.