The Ouzo effect to selectively assemble molybdenum clusters into nanomarbles or nanocapsules with increased HER activity

Abstract

Molybdenum clusters assemble spontaneously into nanocapsules or nanomarbles depending on their solubility in a water/THF mixture.

Surface Plasmon Tunability of Core–Shell Au@Mo6 Nanoparticles by Shell Thickness Modification

“…An interesting observation can be made regarding oxygen, which is not expected in the formula. As reported previously, 20 the hydrolysis of [Mo 6 Br i 8 (NCS) a 6 ] 2-is very slow but possible, leading to the substitution of some NCS by OH. Another possibility is that trace amounts of H 3 O + could play the role of counter-cations in the shell.…”

“…The starting cluster precursor (NH 4 ) 2 [Mo 6 Br i 8 (NCS) a 6 ] was prepared from the ternary bromide Cs 2 [Mo 6 Br i 8 Br a 6 ] by interaction with NH 4 NCS in a H 2 O:EtOH mixture (50:50). 20,23 Core-shell Au@Mo 6 nanoparticles were synthesized by the controlled addition of a solution of [Mo 6 Br i 8 (NCS) a 6 ] 2-(62μmol in EtOH) onto an aqueous solution of citrate capped AuNP (OD 0.5), and let to rest under mechanical agitation for 24h. The size of the amorphous shells was adjusted as a function of Mo 6 cluster concentration and time.…”

From supramolecular to solid state chemistry: crystal engineering of luminescent materials by trapping molecular clusters in an aluminium-based host matrix

“…In particular, they i) absorb light continuously from UV to visible, ii) emit continuously from red to NIR region through several excited emissive states, iii) are able to photoinduce singlet oxygen generation, iv) exhibit interesting catalytic and photo-catalytic properties. First, an inorganic precursor is prepared by solid-state chemistry and then the resulting cluster unit is chemically modified or paired with counter cations to be integrated in the matrix, generating amorphous or poorly-crystalline materials in which the spacing between clusters is mostly uncontrolled, 30,35,[38][39][40][41][42][43][44] except in liquid crystals 32,33,45,46 containing clusters. On the other hand, well-crystalline coordination polymers built from hexamolybdenum cluster based lead to poorly luminescent compounds.…”

Avenue to X-ray-induced photodynamic therapy of prostatic carcinoma with octahedral molybdenum cluster nanoparticles

“…(Bu 4 N) 2 [Mo 6 I 8 (OPOPh 2 ) 6 ] (1) nanoparticles (1NPs) were prepared by the solvent displacement method that was previously used to form spherical or hollow nanoparticles, or nanocrystals. 9,20 In brief, a concentrated methanol solution of 1 (Fig. 1A) was added dropwise to deionized water with magnetic stirring.…”