Optical properties of extreme tellurium nanowires formed in subnanometer-diameter channels

Abstract

Single tellurium (Te) chains attract much attention as extreme nanowires with unique electronic and spintronic properties. Here, we encapsulate Te from melt into channels of zeolites AFI (~0.73nm-channel diameter) and...

Tellurium and Nano-Tellurium: Medicine or Poison?

“…Low-dimensional NMs have great development potential in the fields of photoelectric conversion, nonlinear optics, electronics, magnetic transport, and biomedicine [ 13 ]. Generally, zero-dimensional NMs refer to nano-structures with a size less than 100 nm, whereas 1D NMs have unique physical, structural, and chemical properties, such as nano-tubes, nano-wires, and nano-ribbons with one dimension that may exceed 100 nm [ 55 , 56 , 57 , 58 ].…”

Line group approach for quantum chemical study of intrinsic helical twist of ultrathin tellurium nanorods

“…In addition to its theoretical significance, Te1 is also of practical interest, since such chains have been experimentally obtained inside carbon nanotubes 41,49 or inside channels of sub-nanometer diameter. 50 A single chain of tellurium can be considered as an inorganic helical polymer, and line symmetry groups theory can be naturally applied to it. Although we have not found the use of line group theory in the literature for tellurium chains, considerations using line group theory have been carried out for atomic chains of sulfur and selenium, [51][52][53] which are close analogues of tellurium chains.…”

Optical study of Te8 ring clusters: comparison with density functional theory and a step towards materials design using nanoporous zeolite space

“…21 The RS of another zeolite AFI with encapsulated tellurium (AFI-Te) showed similar bands at 41–47 cm −1 , 65 cm −1 and 184 cm −1 . 7 The bands were attributed to the Te 8 ring. However, no polarized RS study of LTA-Te single crystals has been performed yet, which could provide crucial evidence for Te 8 ring formation.…”

“…Zeolites provide a unique opportunity to form and accommodate uniform guest species in their cavities/channels where the species are oriented due to the crystalline nature of zeolites. [7][8][9][10][11][12][13] For example, only zeolites allowed obtaining polarized Raman spectra (RS) and optical absorption spectra (OAS) of isolated Te chains and rings. [7][8][9][10][11] Moreover, fabrication of such regular high-density Te species arrays can be considered as an important direction in the development of new functional materials, so-called cluster crystals.…”

“…[7][8][9][10][11][12][13] For example, only zeolites allowed obtaining polarized Raman spectra (RS) and optical absorption spectra (OAS) of isolated Te chains and rings. [7][8][9][10][11] Moreover, fabrication of such regular high-density Te species arrays can be considered as an important direction in the development of new functional materials, so-called cluster crystals. [14][15][16] Here, we study Te 8 rings regularly arranged in the large cavities of zeolite LTA.…”