Nanoring

A nanoring consisting of 40 porphyrin subunits. [1]

A nanoring is a cyclic nanostructure with a thickness small enough to be on the nanoscale (10−9 meters). Note that this definition allows the diameter of the ring to be larger than the nanoscale. Nanorings are a relatively recent development within the realm of nanoscience; the first peer-reviewed journal article mentioning these nanostructures came from researchers at the Institute of Physics and Center for Condensed Matter Physics in Beijing who synthesized nanorings made of gallium nitride in 2001.[2] Zinc oxide, a compound very commonly used in nanostructures, was first synthesized into nanorings by researchers at Georgia Institute of Technology in 2004, and several other common nanostructure compounds have been synthesized into nanorings since.[3] More recently, carbon-based nanorings have been synthesized from cyclo-para-phenylenes[4] as well as porphyrins.[5]

  1. ^ Judd, Chris J.; Kondratuk, Dmitry V.; Anderson, Harry L.; Saywell, Alex (2019-06-27). "On-Surface Synthesis within a Porphyrin Nanoring Template". Scientific Reports. 9 (1): 9352. doi:10.1038/s41598-019-45359-w. ISSN 2045-2322. PMC 6597552. PMID 31249330.
  2. ^ Li ZJ, Chen XL, Li HJ, Tu QY, Yang Z, Xu YP, Hu BQ (2001-05-01). "Synthesis and Raman scattering of GaN nanorings, nanoribbons and nanowires". Applied Physics A. 72 (5): 629–632. Bibcode:2001ApPhA..72..629L. doi:10.1007/s003390100796. S2CID 97904274.
  3. ^ Kong XY, Ding Y, Yang R, Wang ZL (February 2004). "Single-crystal nanorings formed by epitaxial self-coiling of polar nanobelts". Science. 303 (5662): 1348–51. Bibcode:2004Sci...303.1348K. doi:10.1126/science.1092356. PMID 14988559. S2CID 17188546.
  4. ^ Sicard, Lambert; Lucas, Fabien; Jeannin, Olivier; Bouit, Pierre-Antoine; Rault-Berthelot, Joëlle; Quinton, Cassandre; Poriel, Cyril (2020-06-26). "[ n ]-Cyclo-9,9-dibutyl-2,7-fluorene ( n =4, 5): Nanoring Size Influence in Carbon-Bridged Cyclo- para -phenylenes". Angewandte Chemie International Edition. 59 (27): 11066–11072. doi:10.1002/anie.202002517. ISSN 1433-7851. PMID 32255247. S2CID 215411130.
  5. ^ Casademont-Reig, Irene; Guerrero-Avilés, Raúl; Ramos-Cordoba, Eloy; Torrent-Sucarrat, Miquel; Matito, Eduard (2021-11-02). "How Aromatic Are Molecular Nanorings? The Case of a Six-Porphyrin Nanoring**". Angewandte Chemie International Edition. 60 (45): 24080–24088. doi:10.1002/anie.202108997. ISSN 1433-7851. PMC 8596448. PMID 34260804.