Investigation of Intermediates Involved in the Photochemical Formation of Mo‐Blue Nanoring by Capillary Electrophoresis–Mass Spectrometry

Abstract

6-/CH 3 CO 2 H system at pH 3.4. The CE electropherogram indicated successful separation of the photolyte species into three migration times. The relative peak

“Host in Host” Supramolecular Core–Shell Type Systems Based on Giant Ring‐Shaped Polyoxometalates

“…Time‐resolved SAXS experiments have been carried out from 260 mM sodium molybdate synthetic solutions acidified at pH 1 (see Supporting Information Section 1.3.4 for full experimental details). As reported previously, the SAXS spectrum of colourless starting solution appears mostly dominated by the [Mo 36 O 112 (H 2 O) 16 ] 8− anion (Supporting Information, section 2, Figure S24) [26, 37, 40] . Molecular growth leading to the {Mo 154 } formation is initiated through addition of sodium dithionite as reducing agent, that results in an instantaneous colour change from colourless to dark deep blue.…”

“…S24). [26], [37], [40] Molecular growth leading to the {Mo154} 14formation is initiated through addition of sodium dithionite as reducing agent, that results in an instantaneous color change from colorless to dark deep blue. In a first step, an abrupt increase of the scattering intensity is observed at q < 0.1 Å -1 from the first minutes following the addition of the reducing agent, while a second step is featured by a continuous increase of the scattering intensity within the low q values range (q < 0.1 Å -1 ) until reaching a plateau after ~ 500 min.…”

“…Herein, we investigate the influence of g-CD upon kinetics of the {Mo 154 }f ormation using time-resolved analytical tools such as SAXS, 1 S24). [26,37,40] Molecular growth leading to the {Mo 154 }f ormation is initiated through addition of sodium dithionite as reducing agent, that results in an instantaneous colour change from colourless to dark deep blue.I nafirst step,anabrupt increase of the scattering intensity is observed at q < 0.1 À1 from the first minutes following the addition of the reducing agent, while as econd step is featured by ac ontinuous increase of the scattering intensity within the low qvalues range (q < 0.1 À1 )until reaching aplateau after 500 min. Furthermore,o scillations gradually shape at 0.21 and 0.42 À1 (see Figure 2a)c onsistent with the increase in the {Mo 154 }c oncentration (Figure 2a and Supporting Information section 1.3.4.2, Figure S1-S3).…”

CE of inorganic species – A review of methodological advancements over 2009–2010

“…This highlights the importance of selecting appropriate non‐denaturing conditions to obtain reliable structural information about non‐covalent metal–protein species by CE‐ESI‐MS. Other accounts of using CE‐ESI‐MS in the area involve testing various ligands of different complexing ability for their effect on the separation of trivalent lanthanides and the stability of the resulting complexes in ESI‐MS 184, investigation of intermediates involved in the photochemical formation of a Mo‐blue nanoring 185, and confirmation of the formation of Rh–tetraphenylporphyrin complexes coordinating CO and other species 186.…”

Determination of the Effective Charge Density of pH‐Responsive Keplerate Polyoxometalate Clusters by Means of Agarose Gel Electrophoresis

“…[6] Therefore, the effective charge on the macroions is different from its structural charge obtained from its crystalline formula. [16][17][18][19][20][21] Most recently, a correlation between the surface-charge density of several POMs and their electro-phoretic mobility was reported by Cronin's group. A complete understanding of such surface-charge properties extends beyond our work and might prove useful in other aspects of colloid chemistry and cluster chemistry as well.…”