Advances in Fluorescence Sensing

Dear Colleagues,

The development of activatable sensors for the recognition and detection of environmentally and biologically important species led to a major progression in science and technology and facilitated economic growth. Scientists worked for years to develop sensors with a rapid response, high selectivity and supersensitivity. Among various sensing techniques, fluorescence sensing (fluorometry), referring to chemosensors based on fluorescence spectroscopy, has specific advantages in term of simplicity, versatility and easy manipulation. Fluorescence sensing can achieve the detection of specific analytes of cations, anions, and biomolecules; the imaging of cell and biological tissue; the measurement of physical and industrial parameters of temperature, pH and humidity; and even the probing of local microstructures of materials, etc.

The luminescent species involved in fluorescence sensing could be small-molecule fluorophores, organocomplexes (organometallics, lanthanide chelates), polymers, nanoparticles (quantum dots, lanthanide or transition-metal-doped nanocrystals), nanostructures, and even bulk solids. The configuration of the fluorescent sensors can consist of molecules, fine particles or large surfaces/interfaces of materials/devices. The indicators adopted for sensing can range from spectral position, fluorescence intensity, fluorescence intensity ratio, band shape, band width to lifetime, etc. The excited processes involved in the sensitive evolution of fluorescence signals can derive from intramolecular charge transfer (ICT), photoinduced electron transfer (PET), Förster resonance energy transfer (FRET), excited-state intramolecular proton transfer (ESIPT) and chelation-induced enhanced fluorescence (CHEF).

Recently, there has been rapid progress in fluorescence sensing; some new and popular topics are emerging. Here, we propose a Special Issue to highlight “Advances in Fluorescence Sensing”, which encompasses a broad range of fluorescent sensors and their applications, including ions/molecules sensing, pH and humidity sensing, optical thermometry, bioimaging and diagnostics applications, etc. It is anticipated that this Special Issue will provide a forum for mutual communication among researchers in the fields of chemistry, materials science, spectroscopy, and biology.

Prof. Dr. Guo-Hui Pan
Prof. Dr. Hongshang Peng
Prof. Dr. Biao Dong
Guest Editors

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