Covalent Surface Modification of TiCT MXene with Chemically Active Polymeric Ligands Producing Highly Conductive and Ordered Microstructure Films.

As interest continues to grow in TiCT and other related MXenes, advancement in methods of manipulation of their surface functional groups beyond synthesis-based surface terminations (T: -F, -OH, and ═O) can provide mechanisms to enhance solution processability as well as produce improved solid-state device architectures and coatings. Here, we report a chemically important surface modification approach in which "" polymers, polyethylene glycol carboxylic acid (PEG6-COOH), are covalently attached onto MXenes esterification chemistry. Surface modification of TiCT with PEG6-COOH with large ligand loading (up to 14% by mass) greatly enhances dispersibility in a wide range of nonpolar organic solvents (.