Iodine molecules were adsorbed into the one-dimensional channels of AlPO₄-11(AEL) single crystals via physical diffusion method. Different iodine loading density AEL samples were obtained. In low iodine loading density samples, vibrational modes of vapor-like iodine molecules with two different orientations were revealed. In high iodine loading density samples, vibrational modes of linear iodine molecular chains (I₂)_n and vapor-like iodine molecules with different orientations were observed. Crystalline iodine structures with orientation perpendicular to crystal channels axis were also discovered inside high iodine loading density AEL samples. A_g^s and B_3g^s modes of crystalline iodine were observed in Raman spectra and their geometric configuration was verified by polarized Raman spectra...[ Read more ]

Iodine molecules were adsorbed into the one-dimensional channels of AlPO₄-11(AEL) single crystals via physical diffusion method. Different iodine loading density AEL samples were obtained. In low iodine loading density samples, vibrational modes of vapor-like iodine molecules with two different orientations were revealed. In high iodine loading density samples, vibrational modes of linear iodine molecular chains (I₂)_n and vapor-like iodine molecules with different orientations were observed. Crystalline iodine structures with orientation perpendicular to crystal channels axis were also discovered inside high iodine loading density AEL samples. A_g^s and B_3g^s modes of crystalline iodine were observed in Raman spectra and their geometric configuration was verified by polarized Raman spectra. Ionic iodine wires were found in high iodine loading density AEL samples saturated in KI solution. Their linear geometric configurations were verified by polarized Raman spectra.