Аннотация:The present study is focused on synthesis and investigation of nanocrystals made of metal iodides (KI, Cul or Agl) inside the channels of single-walled carbon nanotubes (SWNTs) with diameter 1-1.4 nm obtained by the so-called capillary technique using molten compounds. The method is based on impregnation of pre-opened SWNTs by appropriate molten iodide in vacuum with subsequent slow cooling of the system. The resulting composites were studied by nitrogen capillary adsorption method, EDX microanalysis, HRTEM microscopy and Raman spectroscopy. The studies revealed substantial changes in electronic structure of the composites as compared with the raw SWNTs.