Universität zu Köln

Schwartz, Heidi A., Schaniel, Dominik and Ruschewitz, Uwe ORCID: 0000-0002-6511-6894 (2020). Tracking the light-induced isomerization processes and the photostability of spiropyrans embedded in the pores of crystalline nanoporous MOFsviaIR spectroscopy. Photochem. Photobiol. Sci., 19 (10). S. 1433 - 1442. CAMBRIDGE: ROYAL SOC CHEMISTRY. ISSN 1474-9092

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Abstract

The embedment of photochromic dyes into porous host matrices has attracted increasing interest in recent years. Especially the class of spiropyrans has been considered because of its outstanding photochromic and solvatochromic response. We herein present a comprehensive infrared spectroscopic characterization of the photoresponse and photostability of a nitro-substituted spiropyran SP-Nitro (namely 1,3,3-trimethylindolino-6 '-nitrobenzopyrylospiran) non-covalently attached to different crystalline nanoporous MOF (metal-organic framework) host lattices. The TTC mesomeric form of SP-Nitro has been found to be preferably generated upon UV light exposure inside the different MOF hosts. Additionally, the excited isomer was found to be stable for prolonged irradiation times of 1-1.5 h.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schwartz, Heidi A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schaniel, Dominik UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruschewitz, Uwe UNSPECIFIED orcid.org/0000-0002-6511-6894 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-316790
DOI:	10.1039/d0pp00267d
Journal or Publication Title:	Photochem. Photobiol. Sci.
Volume:	19
Number:	10
Page Range:	S. 1433 - 1442
Date:	2020
Publisher:	ROYAL SOC CHEMISTRY
Place of Publication:	CAMBRIDGE
ISSN:	1474-9092
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language METAL-ORGANIC FRAMEWORKS; REVERSIBLE FLUORESCENCE MODULATION; SPONGE; ADSORPTION; SEPARATION; BEHAVIOR; FILMS Multiple languages Biochemistry & Molecular Biology; Biophysics; Chemistry, Physical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/31679