Scientists Build Shape-Shifting Molecules That Respond to Chemical Signals
Researchers have created dynamic molecular systems that change structure based on chemical conditions, opening potential applications in responsive materials and smart manufacturing. The work demonstrates how two different chemical reactions can be linked to control molecular architecture, a capability that could enable new classes of adaptive polymers and advanced materials.
Originaltitel: Interdependent Dynamic Nitroaldol and Boronic Ester Reactions for Complex Dynamers of Different Topologies
<p>Complex dynamic systems displaying interdependency between nitroaldol and boronic ester reactions have been demonstrated. Nitroalkane-1,3-diols, generated by the nitroaldol reaction, were susceptible to ester formation with different boronic acids in aprotic solvents, whereas hydrolysis of the esters occurred in the presence of water. The boronic ester formation led to significant stabilization of the nitroaldol adducts under basic conditions. The use of bifunctional building blocks was furthermore established, allowing for main chain nitroaldol-boronate dynamers as well as complex network dynamers with distinct topologies. The shape and rigidity of the resulting dynamers showed an apparent dependency on the configuration of the boronic acids.</p>