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- Title
Topochemical Polymerization of a Diacetylene in a Chalcogen‐Bonded (ChB) Assembly.
- Authors
Dhaka, Arun; Jeon, Ie‐Rang; Jeannin, Olivier; Aubert, Emmanuel; Espinosa, Enrique; Fourmigué, Marc
- Abstract
The successful topochemical polymerization of bis(selenocyanatomethyl)butadyine 1 is achieved upon association in a 1 : 1 co‐crystal with 1,2‐bis(2‐pyridyl)ethylene (2‐bpen) through strong and linear (NC)−Se⋅⋅⋅NPy chalcogen bonding (ChB) interactions, allowing for an appropriate parallel alignment of the diacetylene moieties toward the solid‐state reaction. Co‐crystal 1⋅(2‐bpen) undergoes polymerization upon heating at 100 °C. The reaction progress was monitored by IR, DSC and PXRD. An enhancement of the polymer conductivity by 8 orders of magnitude is observed upon iodine doping. Strikingly, the course of polymerization is accompanied with sublimation of the ChB acceptor molecules 2‐bpen, providing the polymer in a pure form with full recovery of the co‐former, at variance with the usual hydrogen‐bonded co‐crystal strategies toward polydiacetylenes.
- Subjects
BUTADIYNE; POLYMERIZATION; SUBLIMATION (Chemistry); MOIETIES (Chemistry); POLYMERS; IODINE; ETHYLENE
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 10, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202116650