Porous Organic Frameworks Utilizing Halogen···Halogen Interactions of X4-tetra[2,3]Thienylene (X = Br, I): Guest Dynamics and Dielectric Response.

ABSTRACT: X4-tetrabromo[2,3]thienylene (1, Br4-tetra[2,3]thienylene) and X4-tetraiodotetra[2,3]thienylene (2, I4-tetra[2,3]thienylene) were used to investigate the formation of various guest inclusion crystals through intermolecular halogen···halogen (X···X) interactions and the dynamics of guest molecules. 1 and 2 formed host-guest crystals with aromatic molecules such as benzene (Bz), toluene (Tol), anisole (An), and chlorobenzene (ClBz). X-ray crystal structure analysis revealed the formation of a channel structure where 1D chains formed by intermolecular X···X interactions were arranged in a grid pattern. Host lattices of 1 and 2 were capable of reversibly adsorbing and desorbing Tol molecules while maintaining crystallinity. Dielectric measurements showed dielectric relaxation due to molecular

SUBMITTER: Saito G 

PROVIDER: S-EPMC12734654 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature