Photochemical Energy Storage and Electrochemically Triggered Energy Release in the Norbornadiene-Quadricyclane System: UV Photochemistry and IR Spectroelectrochemistry in a Combined Experiment

Brummel O, Waidhas F, Bauer U, Wu Y, Bochmann S, Steinrück HP, Papp C, Bachmann J, Libuda J (2017)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2017

Journal

Publisher: AMER CHEMICAL SOC

Book Volume: 8

Pages Range: 2819-2825

Journal Issue: 13

DOI: 10.1021/acs.jpclett.7b00995

Abstract

The two valence isomers norbornadiene (NBD) and quadricyclane (QC) enable solar energy storage in a single molecule system. We present a new photoelectrochemical infrared reflection absorption spectroscopy (PEC-IRRAS) experiment, which allows monitoring of the complete energy storage and release cycle by in situ vibrational spectroscopy. Both processes were investigated, the photochemical conversion from NBD to QC using the photosensitizer 4,4'-bis(dimethylamino)benzophenone (Michler's ketone, MK) and the electrochemically triggered cycloreversion from QC to NBD. Photochemical conversion was obtained with characteristic conversion times on the order of 500 ms. All experiments were performed under full potential control in a thin layer configuration with a Pt(111) working electrode. The vibrational spectra of NBD, QC, and MK were analyzed in the fingerprint region, permitting quantitative analysis of the spectroscopic data. We determined selectivities for both the photochemical conversion and the electrochemical cycloreversion and identified the critical steps that limit the reversibility of the storage cycle.

Authors with CRIS profile

Additional Organisation(s)

How to cite

APA:

Brummel, O., Waidhas, F., Bauer, U., Wu, Y., Bochmann, S., Steinrück, H.-P.,... Libuda, J. (2017). Photochemical Energy Storage and Electrochemically Triggered Energy Release in the Norbornadiene-Quadricyclane System: UV Photochemistry and IR Spectroelectrochemistry in a Combined Experiment. Journal of Physical Chemistry Letters, 8(13), 2819-2825. https://dx.doi.org/10.1021/acs.jpclett.7b00995

MLA:

Brummel, Olaf, et al. "Photochemical Energy Storage and Electrochemically Triggered Energy Release in the Norbornadiene-Quadricyclane System: UV Photochemistry and IR Spectroelectrochemistry in a Combined Experiment." Journal of Physical Chemistry Letters 8.13 (2017): 2819-2825.

BibTeX: Download