Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties

A cyclen backbone was utilized to study the effect of backbone rigidity on Eu(iii) luminescence sensitization using a 1,2-HOPO derivative and 2-thenoyltrifluoroacetonate (TTA) as chromophores. The restriction of molecular movement of Eu-Cy-HOPO brought about by the increased rigidity provided a tigh...

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Autores principales: Dai, Lixiong, Lo, Wai-Sum, Gu, Yanjuan, Xiong, Qingwu, Wong, Ka-Leung, Kwok, Wai-Ming, Wong, Wing-Tak, Law, Ga-Lai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2019
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6498141/
https://www.ncbi.nlm.nih.gov/pubmed/31123564
http://dx.doi.org/10.1039/c9sc00244h
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author Dai, Lixiong
Lo, Wai-Sum
Gu, Yanjuan
Xiong, Qingwu
Wong, Ka-Leung
Kwok, Wai-Ming
Wong, Wing-Tak
Law, Ga-Lai
author_facet Dai, Lixiong
Lo, Wai-Sum
Gu, Yanjuan
Xiong, Qingwu
Wong, Ka-Leung
Kwok, Wai-Ming
Wong, Wing-Tak
Law, Ga-Lai
author_sort Dai, Lixiong
collection PubMed
description A cyclen backbone was utilized to study the effect of backbone rigidity on Eu(iii) luminescence sensitization using a 1,2-HOPO derivative and 2-thenoyltrifluoroacetonate (TTA) as chromophores. The restriction of molecular movement of Eu-Cy-HOPO brought about by the increased rigidity provided a tightly packed coordination environment for the octadentate Eu(iii) center which resulted in the highest overall quantum yield (30.2%) and sensitization efficiency (64.6%) among 1,2-HOPO sensitized Eu(iii) complexes. Eu-Cy-HOPO is also the first 1,2-HOPO-based lanthanide complex to emit Eu(iii) luminescence under two-photon excitation.
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spelling pubmed-64981412019-05-23 Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties Dai, Lixiong Lo, Wai-Sum Gu, Yanjuan Xiong, Qingwu Wong, Ka-Leung Kwok, Wai-Ming Wong, Wing-Tak Law, Ga-Lai Chem Sci Chemistry A cyclen backbone was utilized to study the effect of backbone rigidity on Eu(iii) luminescence sensitization using a 1,2-HOPO derivative and 2-thenoyltrifluoroacetonate (TTA) as chromophores. The restriction of molecular movement of Eu-Cy-HOPO brought about by the increased rigidity provided a tightly packed coordination environment for the octadentate Eu(iii) center which resulted in the highest overall quantum yield (30.2%) and sensitization efficiency (64.6%) among 1,2-HOPO sensitized Eu(iii) complexes. Eu-Cy-HOPO is also the first 1,2-HOPO-based lanthanide complex to emit Eu(iii) luminescence under two-photon excitation. Royal Society of Chemistry 2019-03-28 /pmc/articles/PMC6498141/ /pubmed/31123564 http://dx.doi.org/10.1039/c9sc00244h Text en This journal is © The Royal Society of Chemistry 2019 http://creativecommons.org/licenses/by/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0)
spellingShingle Chemistry
Dai, Lixiong
Lo, Wai-Sum
Gu, Yanjuan
Xiong, Qingwu
Wong, Ka-Leung
Kwok, Wai-Ming
Wong, Wing-Tak
Law, Ga-Lai
Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties
title Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties
title_full Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties
title_fullStr Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties
title_full_unstemmed Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties
title_short Breaking the 1,2-HOPO barrier with a cyclen backbone for more efficient sensitization of Eu(iii) luminescence and unprecedented two-photon excitation properties
title_sort breaking the 1,2-hopo barrier with a cyclen backbone for more efficient sensitization of eu(iii) luminescence and unprecedented two-photon excitation properties
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6498141/
https://www.ncbi.nlm.nih.gov/pubmed/31123564
http://dx.doi.org/10.1039/c9sc00244h
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