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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Solvent-dependent selective fluorescence sensor for Zn2+ and Al3+ based on a new diarylethene with a salicylal schiff base group
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The colorimetric and ratiometric fluorescent detection of cyanide and sulfide in live cells, application for logic gate and bioimging
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Development of singlet oxygen-responsive phosphorescent ruthenium(II) complexes.
TL;DR: A new class of Ru(II)-bipyridine complex derivatives that can specifically respond to singlet oxygen with remarkable phosphorescence enhancements have been successfully developed.
References
More filters
Journal ArticleDOI
Signaling Recognition Events with Fluorescent Sensors and Switches.
A. Prasanna de Silva,H. Q. Nimal Gunaratne,Thorfinnur Gunnlaugsson,Allen J. M. Huxley,Colin P. McCoy,Jude T. Rademacher,Terence E. Rice +6 more
Journal ArticleDOI
The green fluorescent protein
TL;DR: In just three years, the green fluorescent protein from the jellyfish Aequorea victoria has vaulted from obscurity to become one of the most widely studied and exploited proteins in biochemistry and cell biology.
Journal ArticleDOI
Neurodegenerative diseases and oxidative stress.
TL;DR: Oxidative stress has been implicated in the progression of Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis and different strategies, including novel metal–protein attenuating compounds aimed at a variety of targets have shown promise in clinical studies.
Journal ArticleDOI
Plasma Homocysteine as a Risk Factor for Dementia and Alzheimer's Disease
Sudha Seshadri,Alexa S. Beiser,Jacob Selhub,Paul F. Jacques,Irwin H. Rosenberg,Ralph B. D'Agostino,Peter W.F. Wilson,Philip A. Wolf +7 more
TL;DR: Dementia developed in 111 subjects, including 83 given a diagnosis of Alzheimer's disease, over a median follow-up period of eight years, and plasma levels of folate and vitamins B12 and B6 increased.
Journal ArticleDOI
Structural Changes Accompanying Intramolecular Electron Transfer: Focus on Twisted Intramolecular Charge-Transfer States and Structures
TL;DR: The Rehybridization of the Acceptor (RICT) and Planarization ofThe Molecule (PICT) III is presented, with a comparison of the effects on yield and radiationless deactivation processes.