Universität zu Köln

Zablocki, Jennifer ORCID: 0000-0002-2100-4807, Arteaga, Oriol ORCID: 0000-0001-9015-0237, Balzer, Frank ORCID: 0000-0002-6228-6839, Hertel, Dirk, Holstein, Julian J., Clever, Guido ORCID: 0000-0001-8458-3060, Anhaeuser, Jana, Puttreddy, Rakesh ORCID: 0000-0002-2221-526X, Rissanen, Kari, Meerholz, Klaus ORCID: 0000-0001-7450-4672, Luetzen, Arne and Schiek, Manuela ORCID: 0000-0002-0108-2998 (2020). Polymorphic chiral squaraine crystallites in textured thin films. Chirality, 32 (5). S. 619 - 632. HOBOKEN: WILEY. ISSN 1520-636X

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Abstract

An enantiomerically pure (R)-2-methylpyrrolidine-based anilino squaraine crystallizes in two chiral polymorphs adopting a monoclinic C2 and an orthorhombic P2(1)2(1)2(1) 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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zablocki, Jennifer UNSPECIFIED orcid.org/0000-0002-2100-4807 UNSPECIFIED Arteaga, Oriol UNSPECIFIED orcid.org/0000-0001-9015-0237 UNSPECIFIED Balzer, Frank UNSPECIFIED orcid.org/0000-0002-6228-6839 UNSPECIFIED Hertel, Dirk UNSPECIFIED UNSPECIFIED UNSPECIFIED Holstein, Julian J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Clever, Guido UNSPECIFIED orcid.org/0000-0001-8458-3060 UNSPECIFIED Anhaeuser, Jana UNSPECIFIED UNSPECIFIED UNSPECIFIED Puttreddy, Rakesh UNSPECIFIED orcid.org/0000-0002-2221-526X UNSPECIFIED Rissanen, Kari UNSPECIFIED UNSPECIFIED UNSPECIFIED Meerholz, Klaus UNSPECIFIED orcid.org/0000-0001-7450-4672 UNSPECIFIED Luetzen, Arne UNSPECIFIED UNSPECIFIED UNSPECIFIED Schiek, Manuela UNSPECIFIED orcid.org/0000-0002-0108-2998 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-336009
DOI:	10.1002/chir.23213
Journal or Publication Title:	Chirality
Volume:	32
Number:	5
Page Range:	S. 619 - 632
Date:	2020
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1520-636X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Physical Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CIRCULAR-DICHROISM; OPTICAL-SPECTRA; DYES; BEHAVIOR; POLYMER Multiple languages Chemistry, Medicinal; Chemistry, Analytical; Chemistry, Organic; Pharmacology & Pharmacy Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/33600