The present invention relates to a charge transporting semi-conducting material comprising: a) optionally at least one electrical dopant, and b) at least one cross-linked charge-transporting polymer comprising 1,2,3-triazole cross-linking units, a method for its preparation and a semiconducting device comprising the charge transporting semi-conducting material.

An electrochromic polymer is comprised of a repeat unit comprising one or more meta-conjugated linkers (MCLs) and one or more aromatic moieties (Ars). Each of the one or more MCLs is partially conjugated with the one or more Ars at meta positions of the MCLs to form a polymer backbone of the electrochromic polymer. The electrochromic polymer undergoes an optical switching and a color change in an electrochromic device, which shows a high transparency and a high optical contrast.

The invention provides for new polymer compounds and methods for the preparation of modular narrow band gap conjugated compounds and polymers that incorporate exocyclic cross-conjugated donors or substituents, as well as novel monomer components of such polymers and the resulting products which comprise materials and useful electronic devices with novel functionality.

The present invention provides an organic nano-grid, a nano-polymer thereof and a preparation method therefor. The organic nano-grid has a general formula (I), and the nano-polymer has a general formula (II), wherein R.sub.1 is an alkyl chain, R.sub.2 is halogen or an electroactive group, and X may comprise a heteroatom such as N, O and S, and n is a natural number from 1 to 10. A nano-connection strategy is applied to the construction of a one-dimensional nano-polymer. The polymer starts from a monomer A.sub.2B.sub.2 to form a corresponding nano-polymer by a Friedel-Crafts polymerization cyclization reaction.

The invention relates to polymers having at least one repeating unit of the following formula (I): wherein Ar.sup.1, Ar.sup.2, Ar.sup.3 and Ar.sup.4, R and X, and a, b, c, d, e and f can have the meanings defined in claim 1, to processes for the preparation thereof and to the use thereof in electronic or optoelectronic devices, in particular in organic electroluminescent devices, so-called OLEDs (OLED=Organic Light Emitting Diodes). The present invention also relates to electronic or optoelectronic devices, in particular organic electroluminescent devices, which contain said polymers.

A composition for forming an organic film, containing: a material for forming an organic film shown by the following general formula; and an organic solvent, where R.sub.1 represents a hydrogen atom, an allyl group, or a propargyl group, R.sub.2 represents a nitro group, a halogen atom, a hydroxy group, an alkyloxy group having 1 to 4 carbon atoms, an alkynyloxy group having 2 to 4 carbon atoms, an alkenyloxy group having 2 to 4 carbon atoms, a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms, a trifluoromethyl group, or a trifluoromethyloxy group, m = 0 or 1, n = 1 or 2, 1 = 0 or 1, k represents an integer of 0 to 2, W represents a divalent organic group having 1 to 40 carbon atoms, and each V independently represents a hydrogen atom or a linking moiety.

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A method, includes: reacting at least one donor group with at least one protected acceptor group to form a plurality of protecting group-containing OSC polymers; removing the protecting group from the plurality of protecting group-containing OSC polymers to form H-bonding sites; and fusing the H-bonding sites of a first OSC polymer backbone with H-bonding sites of a second OSC polymer backbone to form π-π interactions between conjugated OSC polymers.

An electrochromic polymer is comprised of a repeat unit comprising one or more meta-conjugated linkers (MCLs) and one or more aromatic moieties (Ars). Each of the one or more MCLs is partially conjugated with the one or more Ars at meta positions of the MCLs to form a polymer backbone of the electrochromic polymer. The electrochromic polymer undergoes an optical switching and a color change in an electrochromic device, which shows a high transparency and a high optical contrast.

A method for preparing a magnetic chain structure is provided. The method comprises providing a plurality of magnetic particles; dispersing the plurality of magnetic particles in a solution comprising a dopamine-based material to form a reaction mixture; applying a magnetic field across the reaction mixture to align the magnetic particles in the reaction mixture; and polymerizing the dopamine-based material on the aligned magnetic particles to obtain the magnetic chain structure. A magnetic chain structure prepared by the method is also provided.

Polymers, monomers, narrow-band absorbing polymers, narrow-band absorbing monomers, absorbing units, polymer dots, and related methods are provided. Bright, luminescent polymer nanoparticles with narrow-band absorptions are provided. Methods for synthesizing absorbing monomers, methods for synthesizing the polymers, preparation methods for forming the polymer nanoparticles, and applications for using the polymer nanoparticles are also provided.