Novel anisotropic ordered polymeric materials based on metallopolymer precursors as dye sensitized solar cells

Jonnalagadda Gopinath, Ram Kumar Canjeevaram Balasubramanyam, Vundadi Santosh, Sanjay Kumar Swami, D. Kishore Kumar, Saral K. Gupta, Viresh Dutta, Kakarla Raghava Reddy, Veera Sadhu, Annadanam V.Sesha Sainath, Tejraj M. Aminabhavi

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Developing molecular self-assembly is an important step to generate ordered nanostructure materials. In this pursuit, a simple template-free method is reported to develop anisotropic nanostructures using metallopolymer precursors. The phenanthroline-based ruthenium complex monomer (PDAR) and its polymers [3-armed PPDAR (PPDAR-3) and 4-armed PPDAR (PPDAR-4)] were synthesized using ATRP method. These materials displayed higher glass transition temperatures (182 °C for PPDAR-4 and 176 °C for PPDAR-3) compared to the linear polymer, PPDAR (144 °C). The materials showed metal-to-ligand charge transfer (MLCT) absorption peak at 440 nm and armed polymers exhibited higher molar absorption coefficient (PPDAR-4: 7.6 × 105 M−1 cm−1 and PPDAR-3: 6.58 × 105 M−1cm−1) compared to the linear polymer (4.6 × 105 M−1cm−1). The materials were self-assembled in the presence of non-polar solvents to form uniform nano-domain micelles. Thin films of these materials were formed and subjected to elevated annealing temperatures (180 °C) and were fully characterized by AFM, SEM, and XRD techniques to understand the mechanism of self-assembly. Furthermore, dye sensitized solar cell (DSSC) devices were fabricated using the materials as additional components of a liquid electrolyte (I3 /I) to explore the role of these architectures on open circuit voltage (VOC) as well as cell power conversion efficiency (PCE). Overall, this study provides new insights in the area of metallopolymers.

Original languageEnglish
Pages (from-to)1166-1175
Number of pages10
JournalChemical Engineering Journal
Volume358
DOIs
StatePublished - 15 Feb 2019
Externally publishedYes

Keywords

  • Anisotropic nanostructures
  • Energy harvesting devices
  • Metallopolymers
  • Molecular assemblies
  • Template free synthesis

ASJC Scopus subject areas

  • Chemistry (all)
  • Environmental Chemistry
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering

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