Ligand Passivation Technique
Ligand Passivation Technique - Related Videos
09:15
Light Enhanced Hydrofluoric Acid Passivation: A Sensitive Technique for Detecting Bulk Silicon Defects
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Cited by 6 •
2016
A RT liquid surface passivation technique to investigate the recombination activity of bulk silicon defects is described. For the technique to be successful, three critical steps are required: (i) chemical cleaning and etching of silicon, (ii) immersion of silicon in 15% hydrofluoric acid and (iii) illumination for 1 min.
08:09
A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates
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2014
A simple, robust and scalable technique to functionalize and self-assemble macroscopic nanoparticle-ligand monolayer films onto template-free substrates is described in this protocol.
02:40
Ligand Binding Sites
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2020
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands. Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
02:51
Metal-Ligand Bonds
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2020
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes. In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
00:49
Ligand Binding and Linkage
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2020
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...
FAQs
Ligand molecules bind to undercoordinated atoms and vacant surface sites, where they reduce dangling bonds and suppress trap states. These defect states can interfere with charge movement or other functional responses, so reducing them helps stabilize the interface. In engineered nanocrystals, perovskites, and related materials, this mechanism can support improved charge transport and photoluminescence.
Binding strength influences how effectively ligands remain associated with reactive surface sites and how reliably they stabilize the interface. Because surface behavior depends on the interaction between ligand molecules and surface atoms, engineers investigate binding strength alongside ligand structure and surface coverage. These variables help explain differences in chemical stability, charge transport, and device performance.
Surface coverage determines how extensively available reactive or defect-rich sites are addressed by ligand molecules. Coverage that leaves important sites untreated may allow dangling bonds, trap states, or unwanted environmental reactions to persist. Engineering studies therefore examine coverage as a control variable when tailoring interfaces and relating surface treatment to optical, electronic, or durability outcomes.
An engineering workflow should consider the ligand structure, its binding strength, and the extent of surface coverage. These choices determine how the treatment interacts with undercoordinated atoms and vacant sites, while the surrounding environment influences the need for stabilization. Researchers then relate those conditions to target outcomes such as reduced surface reactivity, improved charge transport, or greater durability.
The technique is relevant wherever surface defects or reactivity limit material performance. Engineering applications include optoelectronics, sensors, catalysis, and energy technologies, with particular relevance to semiconductor nanocrystals, perovskites, and other functional materials. By tailoring interfaces, researchers can pursue improvements in photoluminescence, charge transport, chemical stability, and overall device efficiency.
Evidence of a beneficial treatment may include stronger photoluminescence, more effective charge transport, greater chemical stability, or improved device efficiency. These outcomes connect surface modification to functional performance rather than treating passivation as an isolated chemical step. Comparing such properties across ligand structures, binding strengths, or coverage levels helps identify which interface design best serves the engineering objective.