Hydroxyquinoline-based Polymers

Escherichia coli Pseudomonas Staphylococcus Bacillus subtilis aeruginosa aureus 

Reproduced with permission from N.RS Chauhan, journal of Industrial and Engineering Chemistry, 2013, 19, 1014. 2013, Elsevier [54]  

---

The fabrication of polymer analogs of 8-hydroxyquinoline-based metal chelates (such as Alq3, etc.) for electroluminescence applications has been a challenging task. These metal chelate polymers are nontraditional polymers and are usually associated with considerable handling difficulties. Their major intricacy arises from complexation-decomplexation dynamics, which are very sensitive to the pH and ionic strength of the solute.(75) For linear metal chelate polymers, solubilization typically occurs only in polar aprotic solvents,(79) which are difficult to remove from spun films. The insoluble and intractable nature of these polymers makes them amenable to the self-assembly growth which is the subject of this paper. 

The handling and disposal problems associated with the use of liquid solvent extractors have resulted in increased attention to the separation and preconcentration of organic compounds in water by collection in synthetic polymers followed by elution with an organic solvent (2). For example, selective collection and concentration of organic bases on methylacrylic ester resin from dilute water samples have been reported (3). Such collection techniques are especially well-suited to flow-injection measurement techniques. In this study, ionizable organic analytes such as salicylic acid and 8-hydroxyquinoline (oxine) were extracted into a polymer and then back extracted by an aqueous solution. Amperometric measurement using a flow-injection technique was employed to monitor the process. 

XIA 10] Xiao L., Liu Y., Xiu Q. et al., Two main chain polymeric metal complexes as dye sensitizers for dye-sensitized solar cells based on the coordination of the ligand containing 8-hydroxyquinoline and phenylethyl or fluorene units with Eu(III) , Journal of Polymer Science Part A Polymer Chemistry, vol. 48, no. 9, pp. 1943-1951, 2010. 

---