Elucidating the effect of the spacer and the luminescence mechanism of SRB hosted in a LDH interlayer

Abstract

The optical properties of sulforhodamine B (SRB) hosted in surfactant-modified layered double hydroxide (LDH) are explored using quantum yield efficiencies and temporal variations in luminescence. The effect of the spacer,...

Efficient Dispersion of Organic Fluorophores by Size Matching with a Difunctionalized Spacer Interleaved into Layered Double Hydroxide

“…SRB fluorescence decays were studied in solution (10 –5 M), and a nanosecond range lifetime was measured. Only a few papers report the lifetime of SRB in lamellar structures like LDH. , In these works, the interest of the spacer to enable intercalation of the SRB molecule is discussed, but the interpretation of the multiexponential decay often remains questionable. Indeed, Yan et al explain the biexponential decay of luminescence by proposing two interpretations: (1) the SRB molecules are either intercalated in the interlamellar space (for the longest luminescence lifetime) or adsorbed on the surface of the platelets (for the shortest lifetime); (2) different conformational isomers of SRB exist.…”

Efficient dispersion of organic fluorophores by size matching with a new di-functionalized spacer interleaved into layered double hydoxide

“…SRB fluorescence decays were studied in solution (10 -5 M) and a ns range lifetime was measured [64]. Only a few papers report the lifetime of SRB in lamellar structures like LDH [50,65]. In these works, the interest of the spacer to enable the intercalation of the SRB molecule is discussed, but the interpretation of the multi-exponential decay for the different SRB concentrations studied (Fig.…”

A triazolium-based fluorophore intercalated in layered double hydroxides: from simple syntheses to bright solid-state luminescence

“…Importantly, the interlamellar distance can be tuned using long chain mono-or dianionic surfactants called spacers. 8,18,19 By carefully choosing the latter, the distance could be set to an optimal value to accommodate a given fluorescent compound using the recent SMIS method for "Size-Matching of the Interlamellar Space". 20 In addition to regulate the basal spacing, these spacers also maintain a sufficient distance along the lateral plan between the luminescent molecules to avoid their aggregation.…”