Functionalized heteropolytungstate anions possessing a modified Dawson structure: small, individually distinguishable labels for conventional transmission electron microscopy

Chirality in Polyoxometalate Chemistry

“…Keana developed functionalized TEM labels for potential bioimaging applications from achiral Ti‐substituted Dawson lacunary phosphotungstate [α 2 ‐P 2 W 17 O 61 TiCp] 7– (Cp = cyclopentadienyl) 147,148. The chiral molecules of interest to Keana were biotin and a derivatized ATP connected through the Cp ligand, even if the chirality of the objects was not the primary focus of the research.…”

Fine tuning of the properties of organically modified heteropolymetalates

“…This could be due to the siloxane bond which is cer tainly not the best elec tronic junc tion. Other mod i fi cation meth ods of polyoxometallates have al ready been described 2,4,16 . They could be a key to ob tain functionnalized mol e cules with un usual be hav ior for the fields of mo lec ular elec tron ics and non lin ear op tics.…”

“…Strong ef fects are also mea sured with changes of elec tro lyte 3 . Re cently, the graft ing of or ganic rad i cals to a Keggin-type ox ide core was de scribed 4,5,6 . Asa first ex am ple of the `mod i fier ef fect', we re ported pre vi ously the graft ing of polymerizable groups to POM structrures as a pow er ful way to de velop mixed or ganic-inorganic poly mers with ad just able prop er ties 7,8 .…”

Creating monolayers and thin films of a novel bis(alkyl) substituted asymmetrical polyoxotungstate, {[CH3(CH2)11Si]2OSiW11O39}4−using the Langmuir–Blodgett technique

“…Polyoxometalates (POMs) are soluble metal-oxide clusters that display a wide range of physical properties that make them attractive building blocks for supramolecular assemblies and for materials science applications. 1 In particular, due to their tunable redox behavior, distinct spectroscopic states, and high electron densities, POMs have been investigated for applications in catalysis, 2,3 photo-and electrochromism, 4 electron microscopy, 5 and magnetism. 6 The preparation of organicinorganic hybrid systems that take advantage of the magnetic, electrochemical, and optical properties of POMs is the focus of much of the recent work.…”