Overcoming the Insolubility of Molybdenum Disulfide Nanoparticles through a High Degree of Sidewall Functionalization Using Polymeric Chelating Ligands

Abstract

Deck the walls: The principles of coordination chemistry and multidentate ligand design have been used to functionalize the surface of highly inert MoS2 nanoparticles. In this approach the tetradentate nitrilotriacetic acid ligand was coupled either to a fluorescent ligand (for detection) or to a reactive polymer, which serves as an anchor to the sulfide and oxide surfaces of inorganic fullerene/MoS2 and TiO2 nanorods, respectively (see picture).

Influence of Binding‐Site Density in Wet Bioadhesion

“…[1,2,5,7,10] The amino-terminated groups adhere only weakly or not at all, but may be used for attaching other functional molecules. [14] A series of polymers having molar catechol/amino ratios of 0:100, 10:90, 20:80, 40:60 and 100:0 were synthesized (Fig. 1).…”

Liquid Crystalline Phases from Polymer‐Functionalized TiO2 Nanorods

“…[17] Therefore, the concept of "hairy" rods, which was originally developed for stiff main-chain LCs, is promising. [4] In this model, a stiff insoluble core is solubilized by long alkyl chains (the hairs) on its surface.…”

“…1 and Table 1). Polymers with these anchor groups can be used to functionalize anisotropic TiO 2 nanorods, [17] the properties of which will be discussed in more detail below. The connection of the catechols onto TiO 2 surfaces can be monitored spectroscopically, because of the orange-coloured surface complex formed; [27] this effect can be seen when a solution of PL1 or PL2 in an organic solvent is added to TiO 2 nanorods.…”

Tethered Pincer Complexes as Recyclable Homogeneous Catalysts

“…Tremel and co-workers have taken a similar approach for the functionalization of TMD nanoparticles. [10] M(OAc)2 salts (M = Cu, Ni, Zn) were dissolved in IPA (10 mM) and subsequently reacted with IPA-exfoliated 2H-MoS2 (~0.2 mM, v/v = 1) under sonication for 30 min. M(OAc)2 salts were identified as suitable functionalities for two reasons: they display solubilitity in a variety of common lab solvents (acetone, alcohols, nitriles, metal halides do not display such favorable solvation); they represent a large cohort of metalcarboxylate salts, where the carboxylate ligand can be easily changed allowing a broad scope of functional carboxylate group be tethered to the 2H-MoS2 surface.…”