Quantized Double Layer Charging of Nanoparticle Films Assembled Using Carboxylate/(Cu²⁺ or Zn²⁺)/Carboxylate Bridges

Electron and ion transport through multilayers of Au nanoclusters covered by self-assembled monolayers

“…Since the report by Brust et al [1], gold nanoclusters (GNCs) covered by self-assembled monolayers (SAMs) of alkanethiols have attracted many research groups [2][3][4][5][6][7][8][9][10][11][12][13][14] because SAM-covered GNCs have a high stability and those of a certain size with a narrow size distribution can be prepared relatively easily. GNC with special functionalities can be constructed by using thiol molecules with special functional groups.…”

“…For example, Murray et al constructed the GNC mono-and multi-layers and reported the quantized charging and dynamics of electron transfer between the GNCs [10][11][12]. The electrostatic layer-by-layer (LBL) assembly method has been applied not only for the multilayer formation of oppositely charged polyelectrolytes [22], for which this method was originally developed, but also to construct nanoparticle multilayers [12c, 23, 24] by alternatively immersing the charged substrate surface into oppositely charged GNC and ionic polymeric solutions with a rinse after each deposition.…”

Effect of Organic and Inorganic Passivation in Quantum-Dot-Sensitized Solar Cells

“…21−23 Moreover, several works in the literature report the functionalization of nanocrystals and metallic clusters by using a series of different organic species, including thiols, 17,18,24,25 amines, 26 and carboxylic acids. 27 These molecules can passivate the surface states of QDs, 19 introduce electrical dipoles, 24 and act as electron 20 or hole traps. 25 Our work, here reported, is focused on the effect in the performance of QDSC subjected to organic and inorganic passivation.…”

Size dependent lattice constant change of thiol self-assembled monolayer modified Au nanoclusters studied by grazing incidence x-ray diffraction

“…Previously, we succeeded [16][17][18][19][20][21][22][23][24] to synthesize gold nanoclusters (GNCs), of which surface was covered with the mixed self-assembled monolayers (SAMs) of mercaptoundecanoic acid (MUA), 3 hexanethiol (C 6 SH), and ferrocenylhexanethiol (FcC 6 SH), using the methods by Brust et al [25] and Hostetler et al [26] and to construct the multilayers of GNCs on the solid surface, using the cation/anion electrostatic interaction [27][28][29][30][31]. When the potential was made more positive than that for the oxidative decomposition of the thiol SAM on gold [32][33][34][35], the SAM was gradually removed from the GNCs and GNCs started to aggregate [22,23].…”