Imperial College London
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DrJochenBrandt

Faculty of Natural Sciences, Department of Chemistry

 
 
 
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j.brandt

 
 
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Location

 

401FMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wade:2020:10.26434/chemrxiv.12277889.v1,
author = {Wade, J and Hilfiker, J and Brandt, JR and Liirò-Peluso, L and Wan, L and Shi, X and Salerno, F and Ryan, S and Schöche, S and Arteaga, O and Jávorfi, T and Siligardi, G and Wang, C and Amabilino, DB and Beton, P and Campbell, A and Fuchter, M},
doi = {10.26434/chemrxiv.12277889.v1},
title = {A Unified Model to Explain the Large Chiroptical Effects in Polymer Systems Through Natural Optical Activity},
url = {http://dx.doi.org/10.26434/chemrxiv.12277889.v1},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:p>Polymer thin films that emit and absorb circularly polarised light have been demonstrated with the promise of achieving important technological advances; from efficient, high-performance displays, to 3D imaging and all-organic spintronic devices. However, the origin of the large chiroptical effects in such films has, until now, remained elusive. We investigate the emergence of such phenomena in achiral polymers blended with a chiral small-molecule additive (1-aza[6]helicene) and intrinsically chiral-sidechain polymers using a combination of spectroscopic methods and structural probes. We show that – under conditions relevant for device fabrication – the large chiroptical effects are caused by coupling of electric and magnetic transition dipole moments (natural optical activity), not structural chirality as previously assumed, and may occur because of local order in a cylinder blue phase-type organisation. This disruptive mechanistic insight into chiral polymer thin films will offer new approaches towards chiroptical materials development after almost three decades of research in this area.</jats:p>
AU  - Wade,J
AU  - Hilfiker,J
AU  - Brandt,JR
AU  - Liirò-Peluso,L
AU  - Wan,L
AU  - Shi,X
AU  - Salerno,F
AU  - Ryan,S
AU  - Schöche,S
AU  - Arteaga,O
AU  - Jávorfi,T
AU  - Siligardi,G
AU  - Wang,C
AU  - Amabilino,DB
AU  - Beton,P
AU  - Campbell,A
AU  - Fuchter,M
DO  - 10.26434/chemrxiv.12277889.v1
PY  - 2020///
TI  - A Unified Model to Explain the Large Chiroptical Effects in Polymer Systems Through Natural Optical Activity
UR  - http://dx.doi.org/10.26434/chemrxiv.12277889.v1
ER  -
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