Preparation of a Blue Luminescent Nanosheet Derived from Layered Perovskite Bi₂SrTa₂O₉

Abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Photoluminescence in Low-Dimensional Oxide Ferroelectric Materials

“…Ida, et al successfully prepared layered perovskite SrBi 2 Ta 2 O 9 nanosheets with a thickness of about 1.3 nm. The nanosheets showed visible blue luminescence under excitation at 285 nm at room temperature [31]. The luminescence property of the nanosheets was found to be largely sensitive to the change in the surface environment such as adsorption of H+ and/or OH-.…”

Chemical processes employing inorganic layered compounds for inorganic and inorganic–organic hybrid materials

“…37) Another example is photoluminescence (PL): PL intensity drastically increased upon acid treatment of Bi 2 SrTa 2 O 9 , and PL intensity increased further after exfoliation. 38) The obtained protonated forms can accommodate n-alkylamines 23),25),39) and ¡, ½-diaminoalkanes 40) in the interlayer space. The compositions of the protonated forms are H x [A n¹1 B n O 3n+1 ] with x = 1.7 1.8, close to those of Ruddlesden Popper phases.…”

Chemical Nanomanipulation of Two-Dimensional Nanosheets and Its Applications

“…In the case of metal oxides, protonation usually resulted in electrostatic repulsions that facilitated exfoliation. By this procedure, single layers of Ti oxides, [19][20][21][22] Mn oxides, 23 Nb/Ta oxides, [24][25][26] Mo oxides, 27 Ru oxides, 28 and W oxides, 29 as well as sheets of several perovskites 7,9,[30][31][32][33][34][35] have been separated from bulk samples (Fig. 2).…”