Imperial College London
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Professor Jenny Nelson

Faculty of Natural Sciences, Department of Physics

Professor of Physics
 
 
 
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Contact

 

+44 (0)20 7594 7581jenny.nelson

 
 
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Location

 

1007Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Giovannitti:2018:10.1021/acs.chemmater.8b00321,
author = {Giovannitti, A and Maria, I and Hanifi, D and Donahue, M and Bryant, D and Barth, K and Makdah, B and Savva, A and Moia, D and Zetek, M and Barnes, P and Reid, O and Inal, S and Rumbles, G and Malliaras, G and Nelson, J and Rivnay, J and McCulloch, I},
doi = {10.1021/acs.chemmater.8b00321},
journal = {Chemistry of Materials},
pages = {2945--2953},
title = {The role of the side chain on the performance of n-type conjugated polymers in aqueous electrolytes},
url = {http://dx.doi.org/10.1021/acs.chemmater.8b00321},
volume = {30},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We report a design strategy that allows the preparation of solution processable n type materials from low boiling point solvents for organic electrochemical transistors (OECTs). The polymer backbone is based on NDI-T2 copolymers where a branched alkyl side chain is gradually exchanged for a linear ethylene glycol based side chain. A series of random copolymers are prepared with glycol side chain percentages of 0, 10, 25, 50, 75, 90 and 100 with respect to the alkyl side chains. These are characterized in order to study the influence of the polar side chains on interaction with aqueous electrolytes, their electrochemical redox reactions and performance in OECTs when operated in aqueous electrolytes. We observe that glycol side chain percentages of >50 % are required to achieve volumetric charging while lower glycol chain percentages show a mixed operation with high required voltages to allow for bulk charging of the organic semiconductor.  A strong dependence of the electron mobility on the fraction of glycol chains was found for copolymers based on NDI-T2, with a significant drop as alkyl side chains are replaced by glycol side chains.
AU  - Giovannitti,A
AU  - Maria,I
AU  - Hanifi,D
AU  - Donahue,M
AU  - Bryant,D
AU  - Barth,K
AU  - Makdah,B
AU  - Savva,A
AU  - Moia,D
AU  - Zetek,M
AU  - Barnes,P
AU  - Reid,O
AU  - Inal,S
AU  - Rumbles,G
AU  - Malliaras,G
AU  - Nelson,J
AU  - Rivnay,J
AU  - McCulloch,I
DO  - 10.1021/acs.chemmater.8b00321
EP  - 2953
PY  - 2018///
SN  - 0897-4756
SP  - 2945
TI  - The role of the side chain on the performance of n-type conjugated polymers in aqueous electrolytes
T2  - Chemistry of Materials
UR  - http://dx.doi.org/10.1021/acs.chemmater.8b00321
UR  - http://hdl.handle.net/10044/1/58984
VL  - 30
ER  -
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