Imperial College London
Alternate

ProfessorIainMcCulloch

Faculty of Natural Sciences, Department of Chemistry

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 5669i.mcculloch

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kiefer:2018:10.1021/acsenergylett.7b01146,
author = {Kiefer, D and Giovannitti, A and Sun, H and Biskup, T and Hofmann, A and Koopmans, M and Cendra, C and Weber, S and Anton, Koster LJ and Olsson, E and Rivnay, J and Fabiano, S and McCulloch, I and Müller, C},
doi = {10.1021/acsenergylett.7b01146},
journal = {ACS Energy Lett},
pages = {278--285},
title = {Enhanced n-Doping Efficiency of a Naphthalenediimide-Based Copolymer through Polar Side Chains for Organic Thermoelectrics.},
url = {http://dx.doi.org/10.1021/acsenergylett.7b01146},
volume = {3},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - N-doping of conjugated polymers either requires a high dopant fraction or yields a low electrical conductivity because of their poor compatibility with molecular dopants. We explore n-doping of the polar naphthalenediimide-bithiophene copolymer p(gNDI-gT2) that carries oligoethylene glycol-based side chains and show that the polymer displays superior miscibility with the benzimidazole-dimethylbenzenamine-based n-dopant N-DMBI. The good compatibility of p(gNDI-gT2) and N-DMBI results in a relatively high doping efficiency of 13% for n-dopants, which leads to a high electrical conductivity of more than 10-1 S cm-1 for a dopant concentration of only 10 mol % when measured in an inert atmosphere. We find that the doped polymer is able to maintain its electrical conductivity for about 20 min when exposed to air and recovers rapidly when returned to a nitrogen atmosphere. Overall, solution coprocessing of p(gNDI-gT2) and N-DMBI results in a larger thermoelectric power factor of up to 0.4 μW K-2 m-1 compared to other NDI-based polymers.
AU  - Kiefer,D
AU  - Giovannitti,A
AU  - Sun,H
AU  - Biskup,T
AU  - Hofmann,A
AU  - Koopmans,M
AU  - Cendra,C
AU  - Weber,S
AU  - Anton,Koster LJ
AU  - Olsson,E
AU  - Rivnay,J
AU  - Fabiano,S
AU  - McCulloch,I
AU  - Müller,C
DO  - 10.1021/acsenergylett.7b01146
EP  - 285
PY  - 2018///
SN  - 2380-8195
SP  - 278
TI  - Enhanced n-Doping Efficiency of a Naphthalenediimide-Based Copolymer through Polar Side Chains for Organic Thermoelectrics.
T2  - ACS Energy Lett
UR  - http://dx.doi.org/10.1021/acsenergylett.7b01146
UR  - https://www.ncbi.nlm.nih.gov/pubmed/29457139
VL  - 3
ER  -
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