1291051-75-6Relevant academic research and scientific papers
Structure-activity relationships for anion-responsive poly(squaramides): Support for an analyte-induced noncovalent polymer cross-linking mechanism
Rostami, Ali,Guerin, Gerald,Taylor, Mark S.
, p. 6439 - 6450 (2013/09/23)
Poly(squaramides) are a novel class of anion-responsive macromolecules that incorporate the diaminocyclobutenedione hydrogen bond donor group into the polymer backbone. Herein, the synthesis and properties of a series of fluorene-based poly(squaramides) varying in conformational rigidity, squaramide content, and propensity for aggregation are described. Structure-activity relationships for the anion sensory behavior of these polymers (as probed by fluorescence titrations, dynamic light scattering, confocal fluorescence microscopy, and transmission electron microscopy) indicate that anion-induced polymer aggregation leads to a cooperative response with enhanced levels of sensitivity and selectivity. These observations are consistent with a mechanism involving noncovalent cross-linking of polymer chains through squaramide-anion hydrogen-bonding interactions and point toward new applications of polyamides as stimulus-responsive materials.
Anion detection by a fluorescent poly(squaramide): Self-assembly of anion-binding sites by polymer aggregation
Rostami, Ali,Wei, Chu Jun,Guerin, Gerald,Taylor, Mark S.
supporting information; experimental part, p. 2059 - 2062 (2011/04/23)
Winner by aggregate: Incorporating an anion-binding squaramide group into a polymeric architecture results in drastic alterations in the selectivity and magnitude of its anion-induced response, resulting in a sensitive and discriminating turn-on fluoresce
