Gupta, Deepak;
Lakraychi, Alae Eddine;
Boruah, Buddha Deka;
De Kreijger, Simon;
Troian-Gautier, Ludovic;
Elias, Benjamin;
De Volder, Michael;
(2022)
Visible‐light Augmented Lithium Storage Capacity in a Ruthenium(II) Photosensitizer Conjugated with a dione‐catechol Redox Couple.
Chemistry – A European Journal
, 28
(42)
, Article e202201220. 10.1002/chem.202201220.
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Abstract
Controlling redox activity of judiciously appended redox units on a photo-sensitive molecular core is an effective strategy for visible light energy harvesting and storage. The first example of a photosensitizer - electron donor coordination compound in which the photoinduced electron transfer step is used for light to electrical energy conversion and storage is reported. A photo-responsive Ru-diimine module conjugated with redox-active catechol groups in [Ru(II)(phenanthroline-5,6-diolate)3]4− photosensitizer can mediate photoinduced catechol to dione oxidation in the presence of a sacrificial electron acceptor or at the surface of an electrode. Under potentiostatic condition, visible light triggered current density enhancement confirmed the light harvesting ability of this photosensitizer. Upon implementation in galvanostatic charge-discharge of a Li battery configuration, the storage capacity was found to be increased by 100 %, under 470 nm illumination with output power of 4.0 mW/cm−2. This proof-of-concept molecular system marks an important milestone towards a new generation of molecular photo-rechargeable materials.
| Type: | Article |
|---|---|
| Title: | Visible‐light Augmented Lithium Storage Capacity in a Ruthenium(II) Photosensitizer Conjugated with a dione‐catechol Redox Couple |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/chem.202201220 |
| Publisher version: | https://doi.org/10.1002/chem.202201220 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | electron transfer, energy storage, photo-batteries, photo-induced, photosynthesis |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10161241 |
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