摘要:
A method for synthesizing a mesoporous silica nanoparticle, a mesoporous silica nanoparticle, and applications thereof are provided. The method includes fractionating a mesoporous silica nanoparticle suspension to produce size-fractionated mesoporous silica nanoparticle. The method further includes etching the size-fractionated mesoporous silica nanoparticle to produce synthesized mesoporous silica nanoparticle having a hollow, porous morphology configured to receive one of a therapeutic agent and an imaging material. The etching includes differential etching of silica from areas of low polymeric density within the mesoporous silica nanoparticle and re-depositing of the silica in areas of higher polymeric density existing near the surface of the mesoporous silica nanoparticle. A target material is loaded into the synthesized mesoporous silica nanoparticle and a controlled released of the target material is provided by decreasing the physiological pH of the surface of the mesoporous silica nanoparticle.
摘要:
New synthesis and analysis procedures for novel crosslinked polyamines and ampholytes. Polyamines are crosslinked with tartaric acid ester, malonic acid ester, or polycarboxylic acid esters of the citric acid cycle. The resulting crosslinked polyamine may further react with other compounds such as an .alpha.,.beta.-unsaturated or .alpha.-halo unsaturated carboxylic acids to prepare new ampholyte mixtures. The resulting novel ampholytes exhibit greater heterogeneity and complexity than presently prepared ampholytes, and can be used in analytical and preparative isoelectric focusing processes.Novel ampholyte analysis process entails analyzing chemical compounds, usually ampholytes, used in isoelectric focusing processes. The ampholyte is isoelectrically focused on an immobilized pH gradient, and then immersed in a picric acid solution to cause precipitation and visualization of amphoteric species. The isoelectrically focused and visualized ampholyte compounds may be photographed or analyzed densitometrically to compare it with other isoelectrically focused and visualized ampholytes to determine relative heterogeneity of the ampholytes over given pH ranges.
摘要:
A biosensor comprising an electrically conductive substrate coated with a modified chitosan biopolymer that has been electrodeposited on the substrate, wherein said modified chitosan biopolymer comprises at least one vesicle binding molecule. The biosensor is manufactured by a method where a modified chitosan biopolymer is electrodeposited on a substrate. The method is also used to manufacture a modified chitosan biopolymer film by electrodeposition of the chitosan on the substrate and later removing the film from the substrate after electrodeposition. The resulting film can be used in bandages to treat various types of wounds. The biosensor can also be used to detect various analytes in samples.
摘要:
A biosensor comprising an electrically conductive substrate coated with a modified chitosan biopolymer that has been electrodeposited on the substrate, wherein said modified chitosan biopolymer comprises at least one vesicle binding molecule. The biosensor is manufactured by a method where a modified chitosan biopolymer is electrodeposited on a substrate. The method is also used to manufacture a modified chitosan biopolymer film by electrodeposition of the chitosan on the substrate and later removing the film from the substrate after electrodeposition. The resulting film can be used in bandages to treat various types of wounds. The biosensor can also be used to detect various analytes in samples.
摘要:
Methods for detecting a biological interaction comprising administering a substrate comprising a ligand attached to the substrate wherein the ligand binds to a receptor and wherein a signal is produced. Also disclosed is a biosensor comprising a substrate and a ligand wherein the ligand is attached to the surface of the substrate and wherein the ligand preferentially binds to a receptor.
摘要:
New synthesis and analysis procedures for novel crosslinked polyamines and ampholytes. Polyamines are crosslinked with tartaric acid ester, malonic acid ester, or polycarboxylic acid esters of the citric acid cycle. The resulting crosslinked polyamine may further react with other compounds such as an .alpha.,.beta.-unsaturated or .alpha.-halo unsaturated carboxylic acids to prepare new ampholyte mixtures. The resulting novel ampholytes exhibit greater heterogeneity and complexity than presently prepared ampholytes, and can be used in analytical and preparative isoelectric focusing processes.Novel ampholyte analysis process entails analyzing chemical compounds, usually ampholytes, used in isoelectric focusing processes. The ampholyte is isoelectrically focused on an immobilized pH gradient, and then immersed in a picric acid solution to cause precipitation and visualization of amphoteric species. The isoelectrically focused and visualized ampholyte compounds may be photographed or analyzed densitometrically to compare it with other isoelectrically focused and visualized ampholytes to determine relative heterogeneity of the ampholytes over given pH ranges.
摘要:
A method for synthesizing a mesoporous silica nanoparticle, a mesoporous silica nanoparticle, and applications thereof are provided. The method includes fractionating a mesoporous silica nanoparticle suspension to produce size-fractionated mesoporous silica nanoparticle. The method further includes etching the size-fractionated mesoporous silica nanoparticle to produce synthesized mesoporous silica nanoparticle having a hollow, porous morphology configured to receive one of a therapeutic agent and an imaging material. The etching includes differential etching of silica from areas of low polymeric density within the mesoporous silica nanoparticle and re-depositing of the silica in areas of higher polymeric density existing near the surface of the mesoporous silica nanoparticle. A target material is loaded into the synthesized mesoporous silica nanoparticle and a controlled released of the target material is provided by decreasing the physiological pH of the surface of the mesoporous silica nanoparticle.
摘要:
Carbohydrate functionalized catanionic vesicles that include a glycoconjugate and/or peptidoconjugate for vaccination or drug delivery, methods for forming these, and methods of using these.