A soluble conductive chromium coordination polymer with radical ligands and non-integer redox states
Year: 2026
Type: preprint
Abstract: There are few conductive metal-organic materials that are solution processible or that feature electron-accepting conductive units. Thus, a soluble, semiconductive coordination polymer (1n+)x (n = 1 – 3) was developed by linking CrIII ions with electron-deficient back-to-back bis-terpyridine (btpy) ligands. CrIII promotes reduction of these ligands under mild conditions (starting at −0.16 V vs. Fc+/0), providing the first extended material with btpy•− or btpy2− units. Interestingly, (1n+)x undergoes non-integer redox changes (∣Δn∣ < 1) in DMF solution, representing emergent electronic behavior that leads to a moderately high solid-state conductivity of 3.9 x 10−3 S cm−1 when n = 1.5. These solution-phase/solid-state correlations present a promising way to examine and tune the electronic properties of metal-organic radical materials.
Source: ChemRxiv
Institution: Rutgers, The State University of New Jersey
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7221125479