Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer

An aliphatic citric acid–PEG hyper-branched polymer (CPHP) with a π-bond on the polymer backbone was synthesized by a single- step melt reaction in which the polymerization and π-bond formation occur simultaneously. The chemical structure of CPHP was confirmed by FTIR, (1)H-NMR, (13)C-NMR and MALDI-...

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Autores principales: Mani, Gajendiran, Kyobum, Kim, Sengottuvelan, Balasubramanian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5704015/
https://www.ncbi.nlm.nih.gov/pubmed/29180794
http://dx.doi.org/10.1038/s41598-017-16683-w
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author Mani, Gajendiran
Kyobum, Kim
Sengottuvelan, Balasubramanian
author_facet Mani, Gajendiran
Kyobum, Kim
Sengottuvelan, Balasubramanian
author_sort Mani, Gajendiran
collection PubMed
description An aliphatic citric acid–PEG hyper-branched polymer (CPHP) with a π-bond on the polymer backbone was synthesized by a single- step melt reaction in which the polymerization and π-bond formation occur simultaneously. The chemical structure of CPHP was confirmed by FTIR, (1)H-NMR, (13)C-NMR and MALDI-TOF mass spectral analyses. Aggregates are generally found to disperse in any solvent but the CPHP aggregates were soluble in water due to their hybrid nature. The π-bond in the aconitate unit induces green emission by CH/π interaction while the PEG unit of CPHP increases its solubility in water. The soluble aggregates induced green emission (SAIE) of the CPHP was investigated by UV-Visible absorption and emission spectra, time- correlated single photon counting (TCSPC) and zeta potential measurements. The fluorescence life time (τ(f)) increased from 4.93 to11.38 ns with an increase in CPHP concentration. The fluorescence quantum yield (Φ(f)) of CPHP can be altered by varying the concentration of CPHP.
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spelling pubmed-57040152017-11-30 Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer Mani, Gajendiran Kyobum, Kim Sengottuvelan, Balasubramanian Sci Rep Article An aliphatic citric acid–PEG hyper-branched polymer (CPHP) with a π-bond on the polymer backbone was synthesized by a single- step melt reaction in which the polymerization and π-bond formation occur simultaneously. The chemical structure of CPHP was confirmed by FTIR, (1)H-NMR, (13)C-NMR and MALDI-TOF mass spectral analyses. Aggregates are generally found to disperse in any solvent but the CPHP aggregates were soluble in water due to their hybrid nature. The π-bond in the aconitate unit induces green emission by CH/π interaction while the PEG unit of CPHP increases its solubility in water. The soluble aggregates induced green emission (SAIE) of the CPHP was investigated by UV-Visible absorption and emission spectra, time- correlated single photon counting (TCSPC) and zeta potential measurements. The fluorescence life time (τ(f)) increased from 4.93 to11.38 ns with an increase in CPHP concentration. The fluorescence quantum yield (Φ(f)) of CPHP can be altered by varying the concentration of CPHP. Nature Publishing Group UK 2017-11-27 /pmc/articles/PMC5704015/ /pubmed/29180794 http://dx.doi.org/10.1038/s41598-017-16683-w Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Mani, Gajendiran
Kyobum, Kim
Sengottuvelan, Balasubramanian
Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer
title Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer
title_full Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer
title_fullStr Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer
title_full_unstemmed Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer
title_short Water Soluble Self-Aggregates Induced Green Emission of Biocompatible Citric Acid-PEG Hyper Branched Polymer
title_sort water soluble self-aggregates induced green emission of biocompatible citric acid-peg hyper branched polymer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5704015/
https://www.ncbi.nlm.nih.gov/pubmed/29180794
http://dx.doi.org/10.1038/s41598-017-16683-w
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AT sengottuvelanbalasubramanian watersolubleselfaggregatesinducedgreenemissionofbiocompatiblecitricacidpeghyperbranchedpolymer

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