Intercalation of biomolecules in the MnPS3 layered phase

Abstract

Lysine, poly-lysine and lysozyme were successfully intercalated in the MnPS 3 layered phases. Intercalates were characterised by elemental and thermogravimetric analysis, and X-ray powder diffraction. Biomolecules conformation between the layers appears to result from the optimisation of the host-guest interactions. Moreover, infrared spectroscopy and differential scanning calorimetry measurements suggest that lysozyme is not denatured by the intercalation process.

The SEM and TEM study on the laminated structure of individual aragonitic nacre tablet in freshwater bivalve H. cumingii Lea shell

“…And, moreover, this strain in the aragonite crystal lattice might account for the most profound lattice expansion in c-axis as observed in Porkroy's study (2007). In fact similar expansion of basal plane by the intercalation of biomolecules has been observed on the MnPS 3 layered phase (Coradin et al, 2003).…”

An Introduction to Bio‐nanohybrid Materials

“…Transition-metal phosphorus trichalcogenides such as MnPS 3 are able to intercalate amino acids and peptides by ion exchange. In this way, increases in the basal spacing of 0.7 and 3-4 nm are observed for the intercalation of poly-L-lysine and lysozyme, respectively [224]. Interestingly, the enzymatic activity of the immobilized protein has been detected, suggesting that the enzyme is protected against denaturation.…”

Bionanocomposites: A New Concept of Ecological, Bioinspired, and Functional Hybrid Materials

“…[82] The aim of this work was the use of the silicate as a caliper to determine the enzyme diameter from XRD measurements, but unfortunately these interesting hybrid materials were not tested as biosensor devices. More recent works have achieved the immobilization of different enzymes and globular proteins in other layered solids such as zirconium phosphate (a-ZrP), [29] layered calcium niobate (HCa 2 Nb 3 O 10 , perovskite), [83] manganese triphosphochalcogenide (MnPS 3 ), [84] and a synthetic magnesium phyllosilicate, [85] among other examples. The mechanism followed in the preparation of these bionanocomposites involves a delamination of the layered solid, usually by means of quaternary ammonium salts, followed by the re- stacking of the layers entrapping the biological moiety.…”