A substituent-eliminable diketopyrrolopyrrole derivative represented by the following formula (I) is provided. ##STR00001##
In the formula (I), R represents a substituted or unsubstituted alkyl group; X represents a substituted or unsubstituted alkyl group; Ar represents a substituted or unsubstituted aromatic group or a substituted or unsubstituted heteroaromatic group; and n represents an integer of from 1 to 4.

The present disclosure provides cyclic silyl ethers of the formula:

##STR00001##

and salts thereof. The cyclic silyl ethers may be useful as monomers for preparing polymers. Also described herein are polymers prepared by polymerizing a cyclic silyl ether and optionally one or more additional monomers. The polymers may be degradable (e.g., biodegradable). One or more OSi bonds of the polymers may be the degradation sites. Also described herein are compositions and kits including the cyclic silyl ethers or polymers; methods of preparing the polymers; and methods of using the polymers, compositions, and kits.

The present invention relates to functionalized polymers including a poly(phenylene) structure. In some embodiments, the polymers and copolymers of the invention include a highly localized concentration of acidic moieties, which facilitate proton transport and conduction through networks formed from these polymers. In addition, the polymers can include functional moieties, such as electron-withdrawing moieties, to protect the polymeric backbone, thereby extending its durability. Such enhanced proton transport and durability can be beneficial for any high performance platform that employs proton exchange polymeric membranes, such as in fuel cells or flow batteries.

Polyarylene oligomers formed from an aromatic dialkyne monomer having a solubility enhancing moiety show improved solubility in certain organic solvents and are useful in forming dielectric material layers in electronics applications.

The present invention relates to a method for producing a chemically recyclable polyvinyl alcohol copolymer through ring-opening metathesis polymerization of cyclohexene derivatives, wherein the ring strain energy of cyclohexene monomers is increased using trans-fused cyclic carbonate groups to perform ring-opening metathesis polymerization (ROMP) while efficiently controlling same to produce a polyvinyl alcohol copolymer with a well-defined structure of 1,2-diol per six carbon atoms and exhibiting high hydrolytic stability, excellent oxygen protective properties, and processability. In addition, the polyvinyl alcohol copolymer can be chemically recycled into 1,2-diol containing cyclohexene through the ring-closing metathesis of the polyvinyl alcohol polymer, and useful compounds, including industrially useful ,-dialdehyde compounds, can be produced by chemically cleaving 1,2-diol groups.

Disclosed herein are methods of making a conductive polymer material, the method comprising: casting, on a substrate, a functionalized polymer solution comprising a conductive backbone of conjugated monomer units and a plurality of nonconductive side chains; and cleaving the plurality of nonconductive side chains off of the conductive backbone to form the conductive polymer material, the conductive polymer material being insoluble in at least one solvent, wherein the conductive backbone in the conductive polymer material comprises conjugated monomer units substituted with a hydroxymethyl substituent. Also disclosed herein are conductive polymer materials made by the same and conductive films comprising the same.

The present disclosure provides, in some aspects, macromonomers of Formula (I), and salts thereof; methods of preparing the macromonomers, and salts thereof; Brush prodrugs (polymers); methods of preparing the Brush prodrugs; compounds of Formula (II); conjugates of Formula (III), and salts thereof; pharmaceutical compositions comprising a Brush prodrug, or a conjugate or a salt thereof; kits comprising: a macromonomer or a salt thereof, a Brush prodrug, a compound, a conjugate or a salt thereof, or a pharmaceutical composition; methods of using the Brush prodrugs, or conjugates or salts thereof; and uses of the Brush prodrugs, and conjugates or salts thereof. These chemical entities may be useful in delivering pharmaceutical agents to a subject or cell.

The present disclosure provides, in some aspects, macromonomers of Formula (I), and salts thereof; methods of preparing the macromonomers, and salts thereof; Brush prodrugs (polymers); methods of preparing the Brush prodrugs; compounds of Formula (II); conjugates of Formula (III), and salts thereof; pharmaceutical compositions comprising a Brush prodrug, or a conjugate or a salt thereof; kits comprising: a macromonomer or a salt thereof, a Brush prodrug, a compound, a conjugate or a salt thereof, or a pharmaceutical composition; methods of using the Brush prodrugs, or conjugates or salts thereof; and uses of the Brush prodrugs, and conjugates or salts thereof. These chemical entities may be useful in delivering pharmaceutical agents to a subject or cell. ##STR00001##