Gopinath, Jonnalagadda and Balasubramanyam, Ram Kumar Canjeevaram and Santosh, Vundadi and Swami, Sanjay Kumar and Kumar, D. Kishore and Gupta, Saral K. and Dutta, Viresh and Reddy, Kakarla Raghava and Sadhu, Veera and Sainath, Annadanam V. Sesha and Aminabhavi, Tejraj M. (2019) Novel anisotropic ordered polymeric materials based on metallopolymer precursors as dye sensitized solar cells. Chemical Engineering Journal, 358. pp. 1166-1175. ISSN 1385-8947

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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 degrees C for PPDAR-4 and 176 degrees C for PPDAR-3) compared to the linear polymer, PPDAR (144 degrees 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 x 10(5) M-1 cm(-1) and PPDAR-3: 6.58 x 10(5) M(-1)cm(-1)) compared to the linear polymer (4.6 x 10(5)M(-1)cm(-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 degrees 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 (I-3(-)/I-)to explore the role of these architectures on open circuit voltage (V-OC) as well as cell power conversion efficiency (PCE). Overall, this study provides new insights in the area of metallopolymers.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Elsevier.
Subjects: Engineering
Environmental Science > Environmental Geology
Environmental Science > Environmental Geology
Environmental Science > Environmental Geology
Environmental Science > Environmental Geology
Depositing User: Mr. Yogesh Joshi
Date Deposited: 31 Dec 2020 11:11
Last Modified: 31 Dec 2020 11:11

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