Stimuli responsive moieties

In the previous sections it was demonstrated that the stimulus-responsive behavior of ELP was transferred to ELP fusion proteins and even to non-covalently bound moieties, such as proteins, plasmids, and heavy metals, mostly for biomedical and biotechnological applications. The ability of ELPs to reversibly switch their polarity is also of great interest for the development of stimulus-responsive materials. Many approaches have therefore recently been undertaken to integrate ELPs with, for example, polymers, particles, and surfaces. 

Photoresponsive dendrimers are of interest because the properties of these materials can be readily modified by an external stimulus. These initial studies have verified that the inclusion of photoactive moieties into dendritic systems does not adversely affect their photochemical response and can enable changes in the overall macromolecular structure. 

In this approach the PS is built with a quencher moiety in its vicinity that quenches its excited states. In response to some external stimulus, the PS... 

An acidic phosphate lipid which contains thiol moieties at a hydrophobic terminal position was synthesized, and monolayer electrodes of this lipid were fabricated on gold electrodes via chemisorption from an ethanolic solution by altering lipid concentration and immersion time The electrochemistry of the lipid monolayers on gold was examined by using ferricyanide and 1-trimethylammoniomethylferrocene as redox-active markers. The ion gating property of the monolayer responsive to pH and ion stimulus is described. 

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