Topic
Ammonium bromide
About: Ammonium bromide is a research topic. Over the lifetime, 4198 publications have been published within this topic receiving 56161 citations. The topic is also known as: NH4Br.
Papers published on a yearly basis
Papers
More filters
TL;DR: The reaction of K 3 [Cr(ox) 3 ].3H 2 O, a metal(II) salt, and tetra(n-butyl)ammonium bromide in the molar ratio of 1:1:1.5 in water at room temperature afforded a series of mixed-metal assemblies with the formula {NBu 4 [MCr(ox), 3 ]} x (M=Mn 2+, Fe 2+, Co 2+
Abstract: The reaction of K 3 [Cr(ox) 3 ].3H 2 O, a metal(II) salt, and tetra(n-butyl)ammonium bromide in the molar ratio of 1:1:1.5 in water at room temperature afforded a series of mixed-metal assemblies with the formula {NBu 4 [MCr(ox) 3 ]} x (M=Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , Zn 2+ ).
731 citations
TL;DR: A generalized, single-step synthesis procedure to coat individual cetyltrimethyl ammonium bromide- (CTAB) capped nanoparticles with a thin layer of mesoporous silica is outlined and can serve as a platform for further surface modification to facilitate the rapid translation of nanoparticles to a wide range of end applications.
Abstract: A generalized, single-step synthesis procedure to coat individual cetyltrimethyl ammonium bromide- (CTAB) capped nanoparticles with a thin layer of mesoporous silica is outlined. This coating method was demonstrated on CTAB-capped Au nanorods and CTAB-transferred CdSe/ZnS quantum dots with silica coatings ∼15 nm thick containing pores ∼4 nm in diameter. This porous silica coating can serve as a platform for further surface modification to facilitate the rapid translation of nanoparticles to a wide range of end applications.
506 citations
TL;DR: Magnetic nanoparticles of cobalt ferrite (CoFe204) have been synthesized using water-in-oil microemulsions consisting of water, cetyl trimethyl ammonium bromide (surfactant), n-butanol (cosurfactant) and n-octane (oil) as mentioned in this paper.
468 citations
TL;DR: In this article, the Fe(III)/Fe(II) redox couple of the heme protein myoglobin (Mb) gave standard electron-transfer rate constants about 1000-fold larger in liquid crystal films of didodecyldimethyl ammonium bromide (DDAB) on pyrolytic graphite (PG) electrodes than in aqueous solutions.
Abstract: The Fe(III)/Fe(II) redox couple of the heme protein myoglobin (Mb) gave standard electron-transfer rate constants about 1000-fold larger in liquid crystal films of didodecyldimethyl ammonium bromide (DDAB) on pyrolytic graphite (PG) electrodes than in aqueous solutions. Electron-transfer rates of Mb were also enhanced in films of soluble cationic and anionic surfactants adsorbed on PG. Results suggest a role for strongly adsorbed surfactant at electrode-film interfaces, which may prevent adsorption of macromolecular impurities which can block electron transfer. Mb-DDAB films were prepared by spontaneous insertion of Mb from solution into water-insoluble cast films of DDAB
430 citations
TL;DR: In this paper, a quaternary ammonium bromide salt (R4N+Br-) is specifically adsorbed on the colloidal gold solutions through the formation of surface ion pairs, probably with the Br- ion attached to the Au surface.
Abstract: “Naked” colloidal gold solutions have been prepared in toluene using a two-phase system The phase-transfer reagent used, a quaternary ammonium bromide salt (R4N+Br-), is specifically adsorbed on the clusters through the formation of surface ion pairs, probably with the Br- ion attached to the Au surface The separation between clusters for two-dimensional structures is dependent on the chain length in R4N+ When more than one layer is present, the nanosized particles show unusual self-organization properties: the occupancy of 2-fold saddle sites is preferred to that of 3-fold hollow sites, leading to linear and circular arrangements It is proposed that this is due to the balance between local electrostatic repulsion and dispersion forces between the particles
366 citations