Enabling Visible Light Sensitization of Yb, Nd and Er in Dimeric Ln/Ga Metallacrowns through Functionalization with Ru Complexes for NIR-II Multiplex Imaging.

Multiplex imaging in the second near-infrared window (NIR-II, 1000-1700 nm) provides exciting opportunities for more precise understanding of biological processes and more accurate diagnosis of diseases by enabling real-time acquisition of images with improved contrast and spatial resolution in deeper tissues. Today, the number of imaging agents suitable for this modality remains very scarce. In this work, we have synthesized and fully characterized, including theoretical calculations, a series of dimeric Ln/Ga metallacrowns bearing Ru polypyridyl complexes, LnRu-3 (Ln=Y, Yb, Nd, Er).

Correction: Budesonide promotes airway epithelial barrier integrity following double-stranded RNA challenge.

[This corrects the article DOI: 10.1371/journal.pone.

Tuning white light emission using single-component tetrachroic Dy metallacrowns: the role of chromophoric building blocks.

White light production is of major importance for ambient lighting and technological displays. White light can be obtained by several types of materials and their combinations, but single component emitters remain rare and desirable towards thinner devices that are, therefore, easier to control and that require fewer manufacturing steps. We have designed a series of dysprosium(iii)-based luminescent metallacrowns (MCs) to achieve this goal.

Investigation of Ln complexation by a DOTA derivative substituted by an imidazothiadiazole: synthesis, solution structure, luminescence and relaxation properties.

We investigated the coordination properties of original macrocyclic Ln complexes comprising an imidazothiadiazole heterocycle. The thermodynamic stability of the Gd complex was determined by a combination of potentiometric and photophysical measurements. The kinetic inertness was assessed in highly acidic media.

A Dual-Mode Near-Infrared Optical and Photoacoustic Imaging Agent Based on a Low Energy Absorbing Ytterbium Complex.

Near-infrared (NIR) luminescence and photoacoustic (PA) imaging have attracted increasing attention for the real-time monitoring of biological samples due to high sensitivity, resolution, and pronounced signal detection depth, respectively. For improved contrast, both techniques require imaging agents possessing high absorption in the red-NIR range. Herein, we took advantage of a ternary complex formed with the anionic ytterbium(III) (2-thenoyltrifluoroacetonate) ([Yb(tta)]) and the cationic NIR-absorbing chromophore, 1,1'-diethyl-2,2'-dicarbocyanine (Cy), to evaluate its potential to act as a dual-mode NIR luminescence and PA imaging agent.