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Ligand-controlled electrochromic diversification with multilayer coated metallosupramolecular polymer assemblies

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dc.contributor.author Mukkatt, I
dc.contributor.author Nirmala, A
dc.contributor.author Madhavan, N D
dc.contributor.author Shankar, S
dc.contributor.author Deb, B
dc.contributor.author Ajayaghosh, A
dc.date.accessioned 2021-10-29T05:01:51Z
dc.date.available 2021-10-29T05:01:51Z
dc.date.issued 2021-02-03
dc.identifier.citation ACS Applied Materials & Interfaces; 13(4):5245-5255 en_US
dc.identifier.uri https://pubs.acs.org/doi/10.1021/acsami.0c20428
dc.identifier.uri http://hdl.handle.net/123456789/3871
dc.description.abstract Designing surface-confined molecular systems capable of expressing changes in functional properties as a result of slight variations in chemical structure under the influence of an external stimulus is of contemporary interest. In this context, we have designed three tetraterpyridine ligands with variations in their core architecture (phenyl vs tetraphenylethynyl vs bithiophene) to create spray-coated electrochromic assemblies of iron(II)-based metallosupramolecular polymer network films on transparent conducting oxide substrates. These assemblies exhibited molecular permeability and spectroelectrochemical properties that are in turn dictated by the ligand structure. Electrochromic films with high coloration efficiencies (up to 1050 cm2/C) and superior optical contrast (up to 76%) with a concomitant color-to-color redox transition were readily achieved. These functional switching elements were integrated into sandwich-type electrochromic cells (CE up to 641 cm2/C) that exhibited high contrast ratios of up to 56%, with attractive ON–OFF ratios, fast switching kinetics, and high operational stability. Every measurable spectroelectrochemical property of the films and devices is an associated function of the ligand structure that coordinates the same metal ion to different extents. While exhibiting a ligand-structure induced differential metal coordination leading to porosity and spectroelectrochemical diversification, these assemblies allow the creation of electrochromic patterns and images by a simple spray-coating technique. en_US
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.subject thickness en_US
dc.subject redox reactions en_US
dc.subject thin films en_US
dc.subject ligands en_US
dc.subject electrodes en_US
dc.title Ligand-controlled electrochromic diversification with multilayer coated metallosupramolecular polymer assemblies en_US
dc.type Article en_US


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    Research articles authored by NIIST researchers published in 2021

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