Intercalation of Perylenediimide Dye into LDH Clays: Enhancement of Photostability

Abstract

Intercalation of perylenediimide dye into a host layer of layered double hydroxide (LDH) by the anionexchange method is studied. N,N 0 -Bis(4-benzosulfonic acid)perylene-3,4,9,10-tetracarboxylbisimide disodium salt (PRSA) has been synthesized and intercalated into the perchlorate form of ZnAl-, CoAl-, and NiAl-LDH. LDH composite with welldefined morphology has been prepared. XRPD and FT-IR investigation show successful intercalation of PRSA, and the interlayer distances are 32.5 Å for ZnAl-LDH-PRSA, 30.0 Å for CoAl-LDH-PRSA, and 31.2 Å for NiAl-LDH-PRSA. These values support the presence of monolayer arrangement of intercalated PRSA molecules in the composite and also indicate vertical orientation of PRSA molecules with the basal plane of LDH. Photophysical properties of these intercalated composites have been measured with UV-vis spectroscopy, photoluminescence spectroscopy, and confocal laser scanning microscopy. The results indicate that the PRSA molecules are stacked in J-type aggregation in the interlayer region. Intercalated PRSA molecules show enhanced thermal and photophysical stabilities.

Tunable Electronic Transport Properties of 2D Layered Double Hydroxide Crystalline Microsheets with Varied Chemical Compositions

“…A modified coprecipitation method using urea as a precipitation agent was used to successfully synthesize M II Al‐CO 3 ‐LDH (M II = Mg 2+ or Zn 2+ ) microsheets (as shown in the Supporting Information) . LDH solids were dispersed in alcohol and then spin coated onto a SiO 2 /Si substrate.…”

“…The results of this work give a fundamental and detailed understanding of the electrical transport properties of LDH for future electric, electrochemical, and electrocatalytic studies.A modifi ed coprecipitation method using urea as a precipitation agent was used to successfully synthesize M II Al-CO 3 -LDH (M II = Mg 2+ or Zn 2+ ) microsheets (as shown in the Supporting Information). [ 35 ] LDH solids were dispersed in alcohol and then spin coated onto a SiO 2 /Si substrate. A typical scanning electron microscope (SEM) image of MgAl-CO 3 -LDH single crystals is shown in Figure 1 a, and reveals a collection of hexagonal platelets with an average lateral length of 10 µm.…”

Synthesis and characterisation of dye­intercalated nickel­aluminium layered­double hydroxide as a cosmetic pigment

“…In particular, it is proposed to extract Evans Blue using Zn-Al LDH [20], Orange-type dyes -using Zn-Al LDH [21], Perylenediimide -using Zn-Al, Co-Al, Ni-Al LDH [22]. Various azo-dyes [23], including Remazol Brilliant Violet [24], had been extracted using Ni-Al LDH, blue dyes (including Maya Blue) [ [20,26] and intercalation [24].…”

Facile synthesis of methotrexate intercalated layered double hydroxides: Particle control, structure and bioassay explore

“…Shown in Table 1, A In values for various MTX/LDH nanohybrids remain almost unchanged in the range of allowable error. The appearance of trace CO 3 2− was often observed, even when attempts were made to exclude atmospheric carbon dioxide, due to the high affinity of the LDH layers for carbonate anions [21]. The mean particle diameters are summarized in Table 2 and the value was calculated from the corresponding size distributions from SEM statistical results, and the data were collected in triplicate.…”