870074-58-1Relevant academic research and scientific papers
Light-regulated electrostatic interactions in colloidal suspensions
Plunkett, Kyle N.,Mohraz, Ali,Haasch, Richard T.,Lewis, Jennifer A.,Moore, Jeffrey S.
, p. 14574 - 14575 (2005)
The net charge of a colloidal particle was controlled using light and a new photocleavable self-assembled monolayer (SAM). The SAM contained a terminal ammonium group and a centrally located carboxylic acid group that was masked with an ortho-nitrobenzyl functionality. Once exposed to UV light, the 2-nitrobenzyl group was cleaved, therefore transforming the colloidal particle from a net positive (silica-SAM-NH3+) to a net negative (silica-SAM-COO-) charge. By varying the UV exposure time, their zeta potential could be tailored between +26 and -60 mV at neutral pH. To demonstrate a photoinduced gel-to-fluid phase transition, a binary colloidal suspension composed of silica-SAM-NH3+ and negatively charged, rhodamine-labeled silica particles was mixed to form a gel. Exposure to UV light rendered all of the particles negative and therefore converted the system into a colloidal fluid that settles to form a dense sediment. Copyright
Photo-induced multifunctional cross-linking agent, preparation method and application thereof
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, (2021/03/31)
The invention relates to a photo-induced multifunctional cross-linking agent as shown in a general formula (I), wherein the photo-induced multifunctional cross-linking agent is mainly applied to biomacromolecule interaction, such as protein-protein interaction and protein-nucleic acid interaction. According to the invention, the cross-linking agent can be used in biological samples or cells of cell lysis solutions to capture protein-protein interaction or protein-nucleic acid interaction, and can be applied to subsequent protein enrichment and protein cross-linking mass spectrometry; and the photo-induced multifunctional cross-linking agent has important application potential and practical value in interaction research of biomacromolecules.
