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Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure
The n-paraphenylene family comprises chains of phenylene units linked together by C-C bonds that are between single- and double-bonded, and where n corresponds to the number of phenylene units. In this work, we compare the response of the optical properties of different phenylene arrangements. We st...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803999/ https://www.ncbi.nlm.nih.gov/pubmed/31561548 http://dx.doi.org/10.3390/molecules24193496 |
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author | Peña-Álvarez, Miriam Fanetti, Samuele Falsini, Naomi Novelli, Giulia Casado, Juan G. Baonza, Valentín Taravillo, Mercedes Parsons, Simon Bini, Roberto Citroni, Margherita |
author_facet | Peña-Álvarez, Miriam Fanetti, Samuele Falsini, Naomi Novelli, Giulia Casado, Juan G. Baonza, Valentín Taravillo, Mercedes Parsons, Simon Bini, Roberto Citroni, Margherita |
author_sort | Peña-Álvarez, Miriam |
collection | PubMed |
description | The n-paraphenylene family comprises chains of phenylene units linked together by C-C bonds that are between single- and double-bonded, and where n corresponds to the number of phenylene units. In this work, we compare the response of the optical properties of different phenylene arrangements. We study linear chains (LPP), cyclic systems (CPPs), and non-conjugated cyclic systems with two hydrogenated phenylenes (H(4)[n]CPP). Particularly, the systems of interest in this work are [6]LPP, [12]- and [6]CPP and H(4)[6]CPP. This work combines Raman and infrared spectroscopies with absorption and fluorescence (one- and two-photon excitations) measured as a function of pressure up to maximum of about 25 GPa. Unprecedented crystallographic pressure-dependent results are shown on H(4)[n]CPP, revealing intramolecular π-π interactions upon compression. These intramolecular interactions justify the H(4)[n]CPP singular optical properties with increasing fluorescence lifetime as a function of pressure. |
format | Online Article Text |
id | pubmed-6803999 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-68039992019-11-18 Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure Peña-Álvarez, Miriam Fanetti, Samuele Falsini, Naomi Novelli, Giulia Casado, Juan G. Baonza, Valentín Taravillo, Mercedes Parsons, Simon Bini, Roberto Citroni, Margherita Molecules Article The n-paraphenylene family comprises chains of phenylene units linked together by C-C bonds that are between single- and double-bonded, and where n corresponds to the number of phenylene units. In this work, we compare the response of the optical properties of different phenylene arrangements. We study linear chains (LPP), cyclic systems (CPPs), and non-conjugated cyclic systems with two hydrogenated phenylenes (H(4)[n]CPP). Particularly, the systems of interest in this work are [6]LPP, [12]- and [6]CPP and H(4)[6]CPP. This work combines Raman and infrared spectroscopies with absorption and fluorescence (one- and two-photon excitations) measured as a function of pressure up to maximum of about 25 GPa. Unprecedented crystallographic pressure-dependent results are shown on H(4)[n]CPP, revealing intramolecular π-π interactions upon compression. These intramolecular interactions justify the H(4)[n]CPP singular optical properties with increasing fluorescence lifetime as a function of pressure. MDPI 2019-09-26 /pmc/articles/PMC6803999/ /pubmed/31561548 http://dx.doi.org/10.3390/molecules24193496 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Peña-Álvarez, Miriam Fanetti, Samuele Falsini, Naomi Novelli, Giulia Casado, Juan G. Baonza, Valentín Taravillo, Mercedes Parsons, Simon Bini, Roberto Citroni, Margherita Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure |
title | Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure |
title_full | Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure |
title_fullStr | Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure |
title_full_unstemmed | Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure |
title_short | Linear, Non-Conjugated Cyclic and Conjugated Cyclic Paraphenylene under Pressure |
title_sort | linear, non-conjugated cyclic and conjugated cyclic paraphenylene under pressure |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803999/ https://www.ncbi.nlm.nih.gov/pubmed/31561548 http://dx.doi.org/10.3390/molecules24193496 |
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