Novel anisotropic ordered polymeric materials based on metallopolymer precursors as dye sensitized solar cells
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Data
2019-02-15
Autores
Gopinath, Jonnalagadda
Canjeevaram Balasubramanyam, Ram Kumar
Santosh, Vundadi
Swami, Sanjay Kumar
Kishore Kumar, D. [UNESP]
Gupta, Saral K.
Dutta, Viresh
Reddy, Kakarla Raghava
Sadhu, Veera
Sainath, Annadanam V. Sesha
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Resumo
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.
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Anisotropic nanostructures, Energy harvesting devices, Metallopolymers, Molecular assemblies, Template free synthesis
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Chemical Engineering Journal, v. 358, p. 1166-1175.