Inelastic neutron scattering study of the coordination of para-amino benzoic acid molecules to the surface of nanocrystalline titania particles

Adsorption Studies of p-Aminobenzoic Acid on the Anatase TiO2(101) Surface

“…Furthermore, pABA, like pyrocatechol (benzene-1,2-diol) and other catechols, causes an optical absorption shift when adsorbed onto TiO 2 nanoparticles, resulting in a color change from white to yellow (Figure a). , As in the case of catechol on TiO 2 , this must be due to either a direct molecule to substrate e – -transfer process or a change in the density of states of the combined pABA-TiO 2 system because the optical absorption onset for pABA is 360 nm (3.4 eV) . The absorption onsets for anatase TiO 2 (3.2 eV) and pABA have led to their use in sunscreens …”

Surface modification of titanium oxide nanoparticles with chelating molecules: New recognition devices for controlling the selectivity towards lanthanides ionic separation

“…Silica-based (nano) materials were mainly used because of the stability of the inorganic component under c-irradiation, of the large availability of R-Si(OR') 3 precursors and of the elaboration of highly stable hybrid networks due to strong SiAC bond [31]. Non silicate systems as selective extracting technologies were poorly studied because of the need of a reliable and reproducible functionalization route as we previously reported [32][33][34]. Li et al reported the immobilization of lanthanides (III) on an iso-nicotinic acid functionalized titania material in order to study the luminescence properties of these hybrid materials [35,36].…”

A Calorimetric and Computational Study of Aminomethoxybenzoic Acids

“…Aminobenzoic acids and their derivatives are useful intermediates for producing pharmaceuticals, aromatic compounds absorbing UVB and/or UVA, dyes, and flavours and fragrances . Conducting polymers, nanocrystalline particles, materials with luminescent characteristics, peptides and peptidomimetics, and other molecules with biological properties − are also built from these aromatic amino acids. Aminomethoxybenzoic acids are trisubstituted benzene compounds with the general structure shown in Figure and will generally be referred to as XA−Y−MOBA, where X represents the position of the amino group A; Y represents the position of the methoxy group MO; and BA is the acronym for benzoic acid.…”