Journal ArticleDOI
Metal coordination in photoluminescent sensing
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TLDR
The design principles and coordination chemistry of metal probes based on mechanisms of PeT, PCT, ESIPT, FRET, and excimer formation will be discussed in detail, with particular attention given to rationales for the design of turn-on and ratiometric probes.Abstract:
Coordination chemistry plays an essential role in the design of photoluminescent probes for metal ions. Metal coordination to organic dyes induces distinct optical responses which signal the presence of metal species of interest. Luminescent lanthanide (Ln(3+)) and transition metal complexes of d(6), d(8) and d(10) configurations often exhibit unique luminescence properties different from organic dyes, such as high quantum yield, large Stokes shift, long emission wavelength and emission lifetimes, low sensitivity to microenvironments, and can be explored as lumophores to construct probes for metal ions, anions and neutral species. In this review, the design principles and coordination chemistry of metal probes based on mechanisms of PeT, PCT, ESIPT, FRET, and excimer formation will be discussed in detail. Particular attention will be given to rationales for the design of turn-on and ratiometric probes. Moreover, phosphorescent probe design based on Ln(3+) and d(6), d(8) and d(10)-metal complexes are also presented via discussing certain factors affecting the phosphorescence of these metal complexes. A survey of the latest progress in photoluminescent probes for identification of essential metal cations in the human body or toxic metal cations in the environment will be presented focusing on their design rationales and sensing behaviors. Metal complex-based photoluminescent probes for biorelated anions such as PPi, and neutral biomolecules ATP, NO, and H(2)S will be discussed also in the context of their metal coordination-related sensing behaviors and design approaches.read more
Citations
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References
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Journal ArticleDOI
A Selective Turn-On Fluorescent Sensor for Imaging Copper in Living Cells
TL;DR: This BODIPY-based probe is the first Cu+-responsive sensor with visible excitation and emission profiles and gives a 10-fold turn-on response for detecting this ion.
Journal ArticleDOI
Metals and neuroscience.
TL;DR: It is especially intriguing how the powerful catalytic redox activity of antioxidant Cu/Zn-superoxide dismutase can convert into a pro-oxidant activity, a theme echoed in the recent proposal that Abeta and PrP, the proteins respectively involved in Alzheimer's disease and prion diseases, possess similar redox activities.
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Synthetically Tailored Excited States: Phosphorescent, Cyclometalated Iridium(III) Complexes and Their Applications
Michael S. Lowry,Stefan Bernhard +1 more
TL;DR: Methods for synthetically tailoring the properties of bis-cyclometalated iridium(III) materials are focused on, and the factors governing the nature of their lowest excited state are explored.
Journal ArticleDOI
Cell-Penetrating Metal Complex Optical Probes: Targeted and Responsive Systems Based on Lanthanide Luminescence
TL;DR: Lanthanide coordination complexes exhibit predominant localization profiles in protein-rich regions (nucleoli/ribosomes), in cellular mitochondria, or in endosomes/lysosomes, which offer considerable promise as intracellular optical probes, amenable to single- or two-photon excitation, that may report on the local ionic composition of living cells subjected to differing environmental stresses.
Journal ArticleDOI
Development of a highly selective fluorescence probe for hydrogen sulfide.
Kiyoshi Sasakura,Kenjiro Hanaoka,Norihiro Shibuya,Yoshinori Mikami,Yuka Kimura,Toru Komatsu,Tasuku Ueno,Takuya Terai,Hideo Kimura,Tetsuo Nagano +9 more
TL;DR: The design and synthesis of a novel fluorescence probe for H(2)S, HSip-1 is reported, utilizing azamacrocyclic copper(II) ion complex chemistry to control the fluorescence.