Universität zu Köln

Kremer, Stephane, Ober, Isabell, Greussing, Victoria, Kopacka, Holger, Gallmetzer, Hans G., Trubenbacher, Benedikt, Demmel, David, Olthof, Selina ORCID: 0000-0002-8871-1549, Huppertz, Hubert and Schwartz, Heidi A. (2021). Modulating the Optical Characteristics of Spiropyran@Metal-Organic Framework Composites as a Function of Spiropyran Substitution. Langmuir, 37 (25). S. 7834 - 7843. WASHINGTON: AMER CHEMICAL SOC. ISSN 0743-7463

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Abstract

Understanding the interactions between the single components of hybrid systems is essential to drive the development of advanced functional materials. A prerequisite for this is the systematic variation of the building blocks of such compounds. Focusing on spiropyran@metal-organic framework (MOF) composite materials with noncovalently attached spiropyran dyes, both the host scaffold and the dye molecules can be systematically tuned. In this work, a broad substitution pattern was applied to systematically elucidate the characteristics of the resulting hybrid materials as a function of the supplemental substitution on spiropyran. The newly developed 12 composites exhibit substitution and host-dependent optical characteristics, which are particularly affected by the substitution of the 6'-position on the chromene ring. Through the favorable combination of the MOF host's polarity and an adequate strength of the spiropyran's indolinedonor-chromeneacceptor pair, reversible conversion between photoisomers is efficiently accomplished, especially for nitro-substituted spiropyrans inside MIL-68(In).

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kremer, Stephane UNSPECIFIED UNSPECIFIED UNSPECIFIED Ober, Isabell UNSPECIFIED UNSPECIFIED UNSPECIFIED Greussing, Victoria UNSPECIFIED UNSPECIFIED UNSPECIFIED Kopacka, Holger UNSPECIFIED UNSPECIFIED UNSPECIFIED Gallmetzer, Hans G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Trubenbacher, Benedikt UNSPECIFIED UNSPECIFIED UNSPECIFIED Demmel, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Olthof, Selina UNSPECIFIED orcid.org/0000-0002-8871-1549 UNSPECIFIED Huppertz, Hubert UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwartz, Heidi A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-573281
DOI:	10.1021/acs.langmuir.1c01187
Journal or Publication Title:	Langmuir
Volume:	37
Number:	25
Page Range:	S. 7834 - 7843
Date:	2021
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	0743-7463
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language REVERSE PHOTOCHROMISM; DERIVATIVES BEARING; SOLID-STATE; ISOMERIZATION; BEHAVIOR; SPIROBENZOPYRANS; ENCAPSULATION; ADSORPTION; MOLECULES; PORES Multiple languages Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57328