Organic-inorganic luminescent composites obtained by the intercalation of organic dyes into the layered rare-earth hydroxides

A ratiometric luminescence nanoprobe based on layered terbium hydroxide nanosheets for quantitative detection of an anthrax biomarker

“…20 The band at 1637 cm −1 indicates the presence of H 2 O molecules as bending vibration. 24,25 The band at 1400 cm −1 can be assigned to the vibrations of the deprotonated C-H group. The absorption band at 1234 cm −1 is the anti-vibration form of -OSO 3 − .…”

“…35,36 The band at around 617 cm −1 ascribed to the Tb-O vibrations also verify the formation of the layered composites. 24,25,28 Fig. 1(C) shows the TG results for the precursor, organics, and composite.…”

“…[1][2][3]6,8 Layered rare-earth hydroxide (LRH) is an anionic inorganic layered material, 21 which is composed of positively charged layers and negatively charged interlayers of anions. 20,[24][25][26] Due to its rich interlayer chemical properties such as intercalation and ion exchange, it is widely used in the fields of adsorbent, catalysts and photochemical materials. 24,27 The general formula of LRH is [RE 2 IJOH) 5 IJH 2 O)n]ijA m− ] 1/m (RE = rare-earth ions, A m− = anions).…”

“…24,27 The general formula of LRH is [RE 2 IJOH) 5 IJH 2 O)n]ijA m− ] 1/m (RE = rare-earth ions, A m− = anions). [24][25][26]28 Delaminated LRH nanosheets would be a very important class of functional 2D nanoscale materials, 20,29 which can be expanded by inserting organic or inorganic ions and further delaminated into monolayer nanosheets. 20 Investigations have found that intercalating surfactant ions such as dodecyl sulfate (SDS) into the interlayer can facilitate the exfoliation and that formamide (FM) is an excellent delaminating reagent.…”

Fabrication of novel bifunctional nanohybrid based on layered rare-earth hydroxide with magnetic and fluorescent properties

“…The general formula of LRH is [RE 2 (OH) 5 (H 2 O) n ][A m-] 1/m (RE = rare earth ions, A m-= anions) [23]. LRH has been extensively studied and applied in luminescent materials [24][25], catalysts [26][27] and adsorbents [28]. Few literatures report the drug delivery properties of LRH except some of our research group's published work.…”