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Synthesis and Post‐Processing of Chemically Homogeneous Nanothreads from 2,5‐Furandicarboxylic Acid

The synthesis of ordered, functionalized carbon nanothreads remains a challenge. Herein we report the scalable solid-state polymerization of 2,5-furandicarboxylic acid. The resulting nanothread is functionalized with a high density of pendant carboxyl groups, enabling new opportunities for post-synthetic modification. Several 3d metals are demonstrated to bind to the backbone, opening the door to the use of nanothreads in advanced applications.


Compared with conventional, solution-phase approaches, solid-state reaction methods can provide unique access to novel synthetic targets. Nanothreads—one-dimensional diamondoid polymers formed through the compression of small molecules—represent a new class of materials produced via solid-state reactions, however, the formation of chemically homogeneous products with targeted functionalization represents a persistent challenge. Through careful consideration of molecular precursor stacking geometry and functionalization, we report here the scalable synthesis of chemically homogeneous, functionalized nanothreads through the solid-state polymerization of 2,5-furandicarboxylic acid. The resulting product possesses high-density, pendant carboxyl functionalization along both sides of the backbone, enabling new opportunities for the post-synthetic processing and chemical modification of nanothread materials applicable to a broad range of potential applications.

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