The Electrochemical Polymerization of Polypyrrole Microstructures in an Aqueous Solution of Dodecylbenzenesulfonic Acid

Abstract

Conducting polymer – polypyrrole (PPy) microstructures were fabricated in an aqueous solution of dodecylbenzenesulfonic acid (DBSA) by electrochemical polymerization. The study implied the concentration of DBSA had great effect on the morphologies and conductivities of PPy microstructures. At lower DBSA concentration (0.2M), no obvious microstructures were generated. Increasing DBSA concentration, some novel “chayote-like”, “flower-like” microstructures were obtained by modulating electrochemical conditions. The growth process of microstructures was studied by scanning electron microscopy and relevant mechanism was discussed. Raman characterizations indicated that the microstructures were made of conductive PPy doped by DBSA.

Facile Synthesis of Cyclic Polyamidine with High Cationic Degree Using Environmentally Benign Approach

“…The results showed that the sludge dehydration efficiency of the cyclic polyamidine was outstanding. Wang et al prepared the polyamidine firstly through the aqueous solution polymerization of NVF with AN within China [ 8 ]. The properties of polyamidine were assessed in terms of charge density, viscosity, and flocculating effect.…”

“…The experimental results indicated that the starch-grafted polyamidine exhibited promising oil–water separation efficiency. However, the synthetic pathway for preparing cyclic polyamidine based on aqueous solution polymerization may lead to lower yields and unsatisfactory charge density of the corresponding product [ 8 , 10 ]. Water used in polymerization should be further treated to prevent environmental pollution.…”

Soft Template Electropolymerization of Polypyrrole for Improved pH-Induced Drug Delivery

“…To load a clinically sufficient quantity of drugs into PPy, an increased ion-doping capacity is required. A promising approach to give PPy increased capacity is through the creation of surface micro-and nanostructures [7,[15][16][17][18][19][20]. A nanowire network, produced through electrochemical polymerization of pyrrole on a gold electrode, helped to achieve a larger drug loading capacity in the study by Jiang et al [18].…”

“…This process involves potentiodynamic polymerization of pyrrole around hydrogen bubbles enwrapped by surfactant molecules, as described by Qu et al [15]. By applying this method and controlling polymerization conditions, defined microstructures of varying shapes and sizes can be created [16,17,19]. Bajpai et al [17] demonstrated the ability to create such PPy microcontainers to encapsulate fluorescein (FL) molecules.…”