The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water

Self-assembly of organic molecules in aqueous solutions is governed by a delicate entropy/enthalpy balance. Even small changes in their intermolecular interactions can cause critical changes in the structure of the aggregates and their spectral properties. The experimental results reported here demo...

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Main Author: Ilya G. Shenderovich
Format: Article
Language:English
Published: MDPI AG 2019-08-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/24/15/2816
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spelling doaj-0fbe642e2fe64316b74518be432e49d32020-11-24T22:12:41ZengMDPI AGMolecules1420-30492019-08-012415281610.3390/molecules24152816molecules24152816The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in WaterIlya G. Shenderovich0Institute of Organic Chemistry, University of Regensburg, Universitaetstrasse 31, 93053 Regensburg, GermanySelf-assembly of organic molecules in aqueous solutions is governed by a delicate entropy/enthalpy balance. Even small changes in their intermolecular interactions can cause critical changes in the structure of the aggregates and their spectral properties. The experimental results reported here demonstrate that protonated cations of acridine orange, acridine, and acridin-9-amine form stable J-heteroaggregates when in water. The structures of these aggregates are justified by the homonuclear <sup>1</sup>H cross-relaxation nuclear magnetic resonance (NMR). The absorption and fluorescence of these aggregates deviate characteristically from the known H-homoaggregates of the protonated cations of acridine orange. The latter makes acridine orange a handy optical sensor for soft matter studies.https://www.mdpi.com/1420-3049/24/15/2816NMR spectroscopyself-assemblynitrogen heterocyclesfluorescent probes
collection DOAJ
language English
format Article
sources DOAJ
author Ilya G. Shenderovich
spellingShingle Ilya G. Shenderovich
The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water
Molecules
NMR spectroscopy
self-assembly
nitrogen heterocycles
fluorescent probes
author_facet Ilya G. Shenderovich
author_sort Ilya G. Shenderovich
title The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water
title_short The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water
title_full The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water
title_fullStr The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water
title_full_unstemmed The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water
title_sort partner does matter: the structure of heteroaggregates of acridine orange in water
publisher MDPI AG
series Molecules
issn 1420-3049
publishDate 2019-08-01
description Self-assembly of organic molecules in aqueous solutions is governed by a delicate entropy/enthalpy balance. Even small changes in their intermolecular interactions can cause critical changes in the structure of the aggregates and their spectral properties. The experimental results reported here demonstrate that protonated cations of acridine orange, acridine, and acridin-9-amine form stable J-heteroaggregates when in water. The structures of these aggregates are justified by the homonuclear <sup>1</sup>H cross-relaxation nuclear magnetic resonance (NMR). The absorption and fluorescence of these aggregates deviate characteristically from the known H-homoaggregates of the protonated cations of acridine orange. The latter makes acridine orange a handy optical sensor for soft matter studies.
topic NMR spectroscopy
self-assembly
nitrogen heterocycles
fluorescent probes
url https://www.mdpi.com/1420-3049/24/15/2816
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