Sensor luminescence

Navarro-Villoslada F., Orellana G., Moreno-Bondi M.C., Vick T., Driver M., Hildebrand G., Liefeith K., Fiber-Optic Luminescent Sensors with Composite Oxygen-Sensitive layers and Anti-Biofouling Coatings, Anal. Chem. 2001 73 5150-5156. 

Mayr T, Borisov SM, Abel T, Enko B, Waich K, Mistlberger G, Klimant I (2009) Light harvesting as a simple and versatile way to enhance brightness of luminescent sensors. Anal Chem 81 6541-6545... 

Stich MIJ, Nagl S, Wolfbeis OS, Henne U, Schaeferling M (2008) A dual luminescent sensor material for simultaneous imaging of pressure and temperature on surfaces. Adv Funct Mater... 

Keywords Dendrimers Luminescent sensors Metal complexes Metal ions... 

Fig. 2 Schematic representation of (a) a luminescent dendritic sensor with signal amplification and (b) a conventional luminescent sensor. The curved arrows represent interaction processes which changes the luminescence properties (from empty to filled circles). Analyte is represented by a solid hexagon, while the recognition site is by an empty hexagon...

Luminescent Sensor Molecules Based on Coordinated Metals A Review of Recent Developments, Coord. Chem. Rev. 

An important class of luminescence sensors is O2 quenching sensors, which are based on the decrease of luminescence intensity and lifetime of the sensor material as a function of02 tension. 48 50 We will deal in greater mathematical detail with these luminescence sensors in the next section. 

In spite of the numerous studies on practical applications of luminescence sensors, the understanding of the fundamental primary processes and underlying photophysics is still in its infancy. Only when details of the types of sites occupied by the sensor molecules, the local environment, and the quenching processes are understood and correlated with a variety of sensor molecules and supports can new materials and supports be rationally designed. 

J. N. Demas and B. A. DeGraff, Luminescence sensors Modeling of microheterogeneous systems and model differentiation SPIE 1681, 2-11 (1992). 

Ligand (264) has been prepared and complexed with Ru" to give [Ru(264)(4-Metpy)] + which protonates on the cyclam N atoms to give a series of species up to [Ru(H3264)(4-Metpy)] +. In aqueous solution, the system acts as a selective luminescent sensor for ATP (with respect to phosphate, sulfate, and chloride ions). Oxaaza macrocycles attached to the 4 -position of tpy either directly or with a spacer as in (265) have been synthesized in addition, l,10-diaza-18-... 

Jenkins AL, Uy OM, Murray GM. Polymer-based lanthanide luminescent sensor for detection of the hydrolysis product of the nerve agent Soman in water. Anal Chem 1999 71 373-378. 

Aggregation as the cause of luminescence was also probed in fluid solutions, since a dilute colorless solution was not emissive, but a concentrated (2 x 10-2 M) solution was weakly emissive a result that is consistent with the aggregation of these units in solution. Undoubtedly, this complex has potential for practical applications as a luminescent sensor for the detection of volatile organic compounds (VOCs). 

These luminescent sensor films can easily be inserted into microarray formats. Two general ways for the fabrication of ready-made sensor arrays are feasible ... 

L Fabbrizzi, ed. Special issue on luminescent sensors. Coord Chem Rev 205 1-232, 2000. 

Parker, D., Senanayake, P. K., Williams, J. A. G., Luminescent sensors for pH, p0(2), halide and hydroxide ions using phenanthridine as a photosensitiser in macrocyclic europium and terbium complexes. J. Chem. Soc., Perkin Trans. 21998, 2129-2139. 

In this section, a number of systems that have been shown to act as sensors and/or switches will be discussed. These systems have been subdivided based on their mode of operation as described in Scheme 5. In the following section these modes of operation, in conjunction with the concept of modulation, will be shown to produce lanthanide luminescent sensors and switches. 

The complex [Os(tpy)(tact-tpy)]2+ was examined in detail for potential application as a luminescence sensor. The complex emission was demonstrated to be sensitive to Cu2+ and Ni2+ in mixed aqueous acetonitrile solutions. The Ni2+ complex serves as a sensor for the anions ATP, AMP, and Cl . Finally, the authors demonstrated that sol-gel silica films containing the complex exhibited luminescence sensitive to oxygen [109]. 

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