Surface-bound ligand

Fig. 15-4 Analogy between dissolved ligands and adsorbents (surface-bound ligands) (a) surface acid-base reactions (b) surface complexation of free metals (c) formation of "mixed-ligand" surface complexes.

The example of protein interactions presented in this paper will start from the recognition and binding between a surface bound ligand and its antibody approaching from solution. Study of such a model system will help to understand the binding kinetics and mechanisms of signal transduction on cell membranes [35], which are generally initiated by the interaction between a multivalent... 

The author will first review some general concepts of photoredox reactions related to homogeneous and to heterogeneous photoredox systems and will then discuss the possible roles of surface-bound ligands and of surface compounds... 

These results are all indicative of the great potential that QDs have for use as chemical gas sensors. The rational design of QD-based sensing hybrid (or composite) materials is important in achieving functioning devices with enhanced sensitivity, selectivity, and reliability for the rapid and efficient analysis of different gas species. The remainder of this chapter will address each of these issues with topics covering QD synthesis, surface-bound ligand... 

Based on our surface spectroscopic results, a bidentate mode of coordination of Ca " and Tb " with the carboxylate group of Fc-peptide acid cystamine films is proposed (Scheme 6.6). There is precedence for bidentate metal coordination to surface-bound ligands. In a study of lanthanide selective sorbents, Fryxell and coworkers showed that self-assembly of glycinate monolayers on mesopo-rous materials bound Eu " in an 8-coordinated fashion. In this system, the close proximity of the ligands allowed four bidentate ligands to chelate the lanthanide cation [73]. 

Introduction - Sterically Stabilized Nanoparticles Synthesis and the Role of Surface-Bound Ligands 287... 

Quenching processes, for example by surface bound ligands that stabilise the nanoparticles and/or (residual) absorbed water. The OH vibration of water is the most efficient quencher of excited Ln " " ions [10]. 

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