Crosslinker Coupling
Crosslinker Coupling - Related Videos
03:47
Crosslinking Neuronal Surface Proteins in the Mouse Brain using a Chemical Crosslinking Assay
0 Views •
2025
This video demonstrates the crosslinking of neuronal surface proteins using Bis-sulfosuccinimidyl suberate or BS3. Isolated and chilled mouse brain is sectioned coronally. The desired region is extracted from the sections, minced, and treated with BS3. BS3 crosslinks surface proteins like GABA receptors, leaving internal proteins unaltered. The reaction is quenched with glycine before processing the samples for further analysis.
11:15
Nanosponge Tunability in Size and Crosslinking Density
0 Views •
Cited by 1 •
2017
This article describes a process for tuning the size and crosslinking density of covalently crosslinked nanoparticles from linear polyesters containing pendant functionality. By tailoring synthesis parameters (polymer molecular weight, pendant functionality incorporation, and crosslinker equivalents), a desired nanoparticle size and crosslinking density can be achieved for drug delivery applications.
09:06
Preparation of DNA-crosslinked Polyacrylamide Hydrogels
0 Views •
Cited by 5 •
2014
Our laboratory has developed DNA-crosslinked polyacrylamide hydrogels, a dynamic hydrogel system, to better understand the effects of modulating tissue stiffness on cell function. Here, we provide schematics, descriptions, and protocols to prepare these hydrogels.
10:12
Quantitative Detection of DNA-Protein Crosslinks and Their Post-Translational Modifications
0 Views •
Cited by 3 •
2023
The present protocol highlights a modified method to detect and quantify DNA-protein crosslinks (DPCs) and their post-translational modifications (PTMs), including ubiquitylation, SUMOylation, and ADP-ribosylation induced by topoisomerase inhibitors and by formaldehyde, thereby allowing the study of the formation and repair of DPCs and their PTMs.
01:20
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
0 Views •
2024
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others. The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
FAQs
Selectivity arises from matching each reactive group on the crosslinker with a complementary functional group on the target molecule. Activated esters, aldehydes, and maleimides therefore provide different chemical handles for engaging amines, thiols, or carboxyl groups. Choosing the appropriate pairing helps direct which components become covalently connected and supports more controlled molecular organization.
A bifunctional reagent can connect two reactive sites, while a multifunctional reagent can create connections among several molecules or sites. This difference influences whether coupling produces discrete molecular conjugates, extended assemblies, or interconnected networks. Consequently, crosslinker structure is an important design variable when controlling stabilization, organization, and the architecture of the final product.
Crosslink density determines how extensively covalent bridges connect the components of an assembly or material. Adjusting it can tune material strength and stability, while also influencing molecular organization and biological performance. Lower or higher connectivity may therefore be selected according to whether the goal is a particular network structure, durable assembly, or controlled functional behavior.
Reaction conditions should be controlled together with reagent structure and crosslink density because they influence how effectively the selected reactive groups form covalent connections. Appropriate control supports the intended molecular organization and stability rather than an uncontrolled outcome. In chemistry workflows, these variables are considered as a coordinated set when designing a coupling strategy for a material or molecular assembly.
Begin by identifying the functional groups available on the target molecules, then select a crosslinker whose reactive groups are complementary to them. Next, choose whether a bifunctional or multifunctional reagent fits the desired architecture, and establish suitable reaction conditions. Finally, evaluate the resulting connectivity, stability, organization, or performance against the intended application.
In polymer chemistry, multifunctional crosslinkers join polymer components at several reactive sites, producing an interconnected covalent network. The selected reagent structure and crosslink density help determine the network’s organization, strength, and stability. This makes the approach useful when researchers need to modify polymer materials systematically rather than simply connect isolated molecular components.
For biomolecule conjugation, complementary amine, thiol, or carboxyl groups provide attachment points for connecting molecular partners. The same coupling logic can place reactive components on surfaces or join labels and other elements in analytical probes. These applications extend the strategy beyond bulk materials, enabling controlled connections that support biological performance, surface modification, or molecular analysis.