Thienothiophene and Triphenylbenzene Based Electroactive Conjugated Porous Polymer for Oxygen Reduction Reaction (ORR)


Isci R., Balkan T., Tafazoli S., Sütay B., EROĞLU M. S., Öztürk T.

ACS APPLIED ENERGY MATERIALS, vol.5, no.11, pp.13284-13292, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 5 Issue: 11
  • Publication Date: 2022
  • Doi Number: 10.1021/acsaem.2c01830
  • Journal Name: ACS APPLIED ENERGY MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
  • Page Numbers: pp.13284-13292
  • Keywords: thienothiophene, conjugated porous polymer (CPP), polymeric electrocatalyst, oxygen reduction reaction (ORR), metal-free electrocatalyst, catalyst kinetics, OPTICAL-PROPERTIES, NETWORKS, SULFUR, CARBON, 1,3,5-TRIPHENYLBENZENE, ELECTROCATALYST, DERIVATIVES, CAPACITORS, CATALYSTS, OXIDE
  • Istanbul Technical University Affiliated: Yes

Abstract

Catalysts based on metal-free conjugated porous polymers (CPPs) are still rare for electrochemical oxygen reduction reactions (ORR). In this study, a conjugated porous polymer, TT-TPB, based on thieno[3,2-b]thiophene (TT) and triphenylbenzene (TPB), was synthe-sized applying palladium(0) catalyzed Suzuki coupling reaction and its ORR activity was investigated in alkaline condition. It demonstrated comparable electrocatalytic performance of approximate to 0.89-0.9 V Fonset vs RHE with the commercially available Pt/C. Density-functional theory (DFT) calculations revealed that TT-TPB featured efficient electrocatalytic active sites derived from volumetric, areal, and O2 adsorbing calculations, which were in line with the experimental results. Moreover, semiconducting and surface properties of TT-TPB were investigated in detail using electro-chemical and spectrophotometric techniques. This work shows the potential application of thienothiophene-based metal-free CPP in the electrochemical conversion process.