Polymorphic chiral squaraine crystallites in textured thin films
Abstract
An enantiomerically pure (R)‐2‐methylpyrrolidine‐based anilino squaraine crystallizes in two chiral polymorphs adopting a monoclinic C2 and an orthorhombic P212121 structure, respectively. By various thin‐film preparation techniques, a control of the polymorph formation is targeted. The local texture of the resulting textured thin films is connected to the corresponding optical properties. Special attention is paid to an unusual Davydov splitting, the anisotropic chiroptical response arising from preferred out‐of‐plane orientation of the crystallites, and the impact of the polymorph specific excitonic coupling.
Main Authors
Format
Articles
Research article
Published
2020
Series
Subjects
Publication in research information system
Publisher
John Wiley & Sons
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202003182441Use this for linking
Review status
Peer reviewed
ISSN
1520-636X
DOI
https://doi.org/10.1002/chir.23213
Language
English
Published in
Chirality
Citation
- Zablocki, J., Arteaga, O., Balzer, F., Hertel, D., Holstein, J. J., Clever, G., Anhäuser, J., Puttreddy, R., Rissanen, K., Meerholz, K., Lützen, A., & Schiek, M. (2020). Polymorphic chiral squaraine crystallites in textured thin films. Chirality, 32(5), 619-631. https://doi.org/10.1002/chir.23213
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Funder(s)
Research Council of Finland
Funding program(s)
Postdoctoral Researcher, AoF
Tutkijatohtori, SA
Additional information about funding
Deutscher Akademischer Austauschdienst; Ministerio de Ciencia Innovación, Grant/Award Numbers: FIS2015-73306-JIN and RTI2018-098410-JI00 (MCIU/, RTI2018-098410- J-I00; DAAD; PRO-RETINA Stiftung; Bonn International Graduate School (BIGS); Studienstiftung des deutschen Volkes; University of Jyväskylä; Academy of Finland, Grant/Award Number: 298817; FEDER; Spanish Government
Copyright© 2020 The Authors