Biofunctionalization of TiO2 surfaces with self-assembling oligopeptides in different pH and Ionic Strength conditions: Charge effects and molecular organization

Materials Science & Engineering. C, Materials for Biological Applications
S FranchiG Iucci

Abstract

Self-assembling peptides (SAPs) were investigated by means of XPS and Angular Dependent NEXAFS spectroscopies, with the aim to probe the influence of pH and Ionic Strength conditions on the chemical structure and molecular organization of SAPs anchored on titania surfaces. XPS at the C1s, N1s, O1s core levels allowed to study surfaces and biomolecule/substrate interfaces. NEXAFS data allowed ascertaining that SAPs molecular structure is preserved upon grafting to the titania surface. Angular Dependent NEXAFS was used to investigate the influence of environmental conditions on the molecular organization behaviour. The objective of our study was to establish a set of methodologies for obtaining arrangements of well-organized biomolecules on scaffolds surfaces as a basic technology to develop and optimize cells adhesion and proliferation for tissue engineering applications.

Citations

Mar 7, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Domenico FrancoSabrina Conoci
Nov 22, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Valeria SecchiChiara Battocchio
Dec 25, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Keli WangXia Zhang

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