Infrared radiation is an ancient pollination signal - Science | AAAS

We’re sharing this article early to provide faster access to peer-reviewed, accepted research. It is citable and carries a permanent DOI. This version is subject to further edits and will be replaced automatically by the final Version of Record. All legal disclaimers apply. AbstractCovalent organic frameworks (COF) have emerged as promising phototherapeutic platforms for tumor therapy, where the columnar π-arrayed metal-free photosensitizers serve as both a cooperative light-harvesting antenna and a semiconducting scaffold for efficient charge-carrier separation and transport. However, the phototherapeutic agents based on COFs are usually activated with ultraviolet and visible light, resulting in the limitation of deep-tissue phototherapy. Herein, we develop near-infrared-responsive COFs through elaborate design and synthesis of a thia-hexaphyrin building block, which feature well-aligned conjugation skeletons for the generation of reactive oxygen species (ROS) and photothermal effect upon 808 nm laser irradiation, outperforming conventional porphyrin-based COFs.

Relative emissivity spectrum of 2P/Encke’s nucleus obtained by the COMICS observations, in comparison with that of 460P/PanSTARRS (T. Ootsubo et al. 2021). The spectrum of 460P/PanSTARRS (in grey) is shifted by 0.1 for the readability. The grey hatched area is the wavelength region influenced by the telluric ozone absorption. -- [astro-ph. EP] [astro-ph. EP] We observed comet 2P/Encke with the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the Subaru telescope on UT 2003 November 12.3, when the comet was at heliocentric and geocentric distances of 1.09 and 0.27 au, respectively.

While space-based astronomy is bringing new insights into our universe every day, there are still places that remain shrouded in mystery. Among these are the very cold objects visible in the far-infrared portion of the spectrum, like newly forming planets or the interstellar medium, but invisible to the naked eye. It is precisely to better understand how these systems evolve that NASA has selected PRIMA (PRobe far-Infrared Mission for Astrophysics). The mission’s European partners, coordinated from CNES by Olivier La Marle, Head of Universe Sciences, and Florent Canourgues, Project Lead for phase A of the French contribution and PRIMAger Project Manager, are supplying two complementary instruments, one of which is PRIMAger, an innovative cooled thermal camera.