Exploring Photophysical Properties and Sensitivity to Oxygen in Anisolyl-Picolinate Antenna Conjugated to Azamacrocycles.

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-06-30 DOI:10.1021/acs.inorgchem.5c00436

Lucile Bridou, Loëza Collobert, Kyangwi P Malikidogo, Salauat R Kiraev, Maher Hojorat, Nadège Hamon, Anh Thy Bui, François Riobé, Akos Banyasz, Maryline Beyler, Raphaël Tripier, Olivier Sénèque, Olivier Maury

引用次数: 0

Abstract

An anisolyl-picolinate antenna grafted onto different macrocyclic ligands such as tacn, pyclen, or cyclen renders the resulting terbium(III) complexes highly sensitive to oxygen in aqueous solutions, enabling the design of ratiometric or lifetime-based molecular sensors. The underlying sensitization mechanism was investigated using analogous gadolinium(III) complexes, and the oxygen sensitivity was studied using transient absorption spectroscopy. The antenna-based triplet lifetime increased by up to 900-fold upon degassing, underscoring the role of the ligand excited states in designing highly sensitive oxygen probes.

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偶氮大环共轭苯甲酸乙酯天线的光物理性质及其对氧的敏感性研究。

将异聚吡啶甲酸酯天线接枝到不同的大环配体上，如tacn、pyclen或cyclen，使所得到的铽（III）配合物对水溶液中的氧高度敏感，从而可以设计比例或基于寿命的分子传感器。利用类似的钆（III）配合物研究了其潜在的敏化机理，并利用瞬态吸收光谱研究了其氧敏性。在脱气后，基于天线的三重态寿命增加了900倍，强调了配体激发态在设计高灵敏度氧探针中的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.