Invited for this month's cover are groups from the University of Aveiro and the University NOVA of Lisbon/Bioscope. The cover picture of the lighthouses of Barra (Aveiro) and Cabo Espichel (Lisbon) in Portugal represents the remarkable sensing ability of benzoporphyrin derivatives for Hg2+ metal ions. These systems have high potential for use as chromogenic and fluorogenic sensors. Read the full text of the article on page 1230.
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