Imperial College London
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Dr Florian Glöcklhofer

Faculty of Natural Sciences, Department of Chemistry

Visiting Researcher
 
 
 
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Contact

 

f.glocklhofer Website

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ding:2024:10.1039/d3fd00145h,
author = {Ding, B and Bhosale, M and Bennett, T and Heeney, M and Plasser, F and Esser, B and Glöcklhofer, F},
doi = {10.1039/d3fd00145h},
journal = {Faraday Discussions},
pages = {129--144},
title = {Reducing undesired solubility of squarephaneic tetraimide for use as an organic battery electrode material},
url = {http://dx.doi.org/10.1039/d3fd00145h},
volume = {250},
year = {2024}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Locally aromatic alkyl-N-substituted squarephaneic tetraimide (SqTI) conjugated macrocycles are four-electron reducible, owing to global aromaticity and presumed global Baird aromaticity of the dianion and tetraanion states, respectively. However, their good solubility inhibits their application as a battery electrode material. By applying sidechain removal as a strategy to reduce SqTI solubility, we report the development of its unsubstituted derivative SqTI-H, which was obtained directly from squarephaneic tetraanhydride by facile treatment with hexamethyldisilazane and MeOH. Compared to alkyl-N-substituted SqTI-Rs, SqTI-H exhibited further improved thermal stability and low neutral state solubility in most common organic solvents, owing to computationally demonstrated hydrogen-bonding capabilities emanating from each imide position on SqTI-H. Reversible solid state electrochemical reduction of SqTI-H to the globally aromatic dianion state was also observed at -1.25 V vs. Fc/Fc+, which could be further reduced in two stages. Preliminary testing of SqTI-H in composite electrodes for lithium-organic half cells uncovered imperfect cycling performance, which may be explained by persistent solubility of reduced states, necessitating further optimisation of electrode fabrication procedures to attain maximum performance.
AU  - Ding,B
AU  - Bhosale,M
AU  - Bennett,T
AU  - Heeney,M
AU  - Plasser,F
AU  - Esser,B
AU  - Glöcklhofer,F
DO  - 10.1039/d3fd00145h
EP  - 144
PY  - 2024///
SN  - 1359-6640
SP  - 129
TI  - Reducing undesired solubility of squarephaneic tetraimide for use as an organic battery electrode material
T2  - Faraday Discussions
UR  - http://dx.doi.org/10.1039/d3fd00145h
UR  - http://hdl.handle.net/10044/1/106094
VL  - 250
ER  -
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