Proton Conductivities of Stepwise Protonated Imidazole-Fused Tetraphenylene Derivatives.

ABSTRACT: The control of crystal structure and proton conductivity was evaluated by stepwise protonation of tetraphenylene molecules (ImTP) containing a imidazole group. By controlling the degree of protonation from neutral ImTP to H₁ImTP⁺, H₂ImTP²⁺, and H₄ImTP⁴⁺, we demonstrated that the balance between intermolecular hydrogen bonding and electrostatic interactions affects structural stability and proton conductivity. X-ray diffraction analysis revealed that neutral ImTP forms a 2D hydrogen bond network, while H₁ImTP⁺ exhibits enhanced structural stability due to N─H⁺···Cl^- electrostatic interactions. H₂ImTP²⁺ forms a 3D network, and H₄ImTP⁴⁺ becomes amorphous. Under 40% relative humidity conditions,

SUBMITTER: Li M 

PROVIDER: S-EPMC12598376 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature