This disclosure relates generally to electrochromic polymers that include a plurality of -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.

An electrochromic polymer with polar side chains is disclosed. The viscosity of the electrochromic polymer is controllable by adjusting a ratio between polar side chains and alkyl side chains for forming the electrochromic polymer. The disclosed electrochromic polymer with polar side chains can be also made into a film with a controllable thickness by coating.

An all-donor black color electrochromic polymer is disclosed as well as a method for preparing the all-donor black color electrochromic polymer. The electrochromic polymer comprises conjugated polymers, and the conjugated polymers are chemically linked, or physically blended, or both.

The present specification relates to an organic electronic device including a fullerene derivative.

A complimentary polymer or dual-polymer electrochromic device and methods of preparing the same are provided.

Disclosed herein are new semiconductor materials prepared from dithienylvinylene copolymers with aromatic or heteroaromatic -conjugated systems. Such copolymers, with little or no post-deposition heat treatment, can exhibit high charge carrier mobility and/or good current modulation characteristics. In addition, the polymers of the present disclosure can possess certain processing advantages such as improved solution-processability and low annealing temperature.

A complimentary polymer or dual-polymer electrochromic device and methods of preparing the same are provided.

The present invention relates to nanoparticle compositions and, in particular, to composite polymeric nanoparticle compositions. A composite nanoparticle described herein comprises a photoluminescent polymeric component and a photo-thermal polymeric component. The photoluminescent polymeric component and the photo-thermal polymeric component can each comprise a single polymeric species or multiple polymeric species.

This disclosure provides an organic compound. The organic compound has a structural formula

##STR00001##

where at least one of a ring A, ring A-Y, a ring B, ring B-Z, or R has a structure

##STR00002##

This disclosure further provides a method for preparing the organic compound and use thereof. The organic compound is used in an organic device. The device using the organic compound has high light-emitting efficiency, a narrow FWHM on a luminescence spectrum, a long service life, and the like.