Photoluminescence of Inorganic Semiconductors for Chemical Sensor Applications

An Illuminating Framework: Understanding the Photoluminescence of α-CuAlCl4

“…Luminescent Quenching by Gases. Variation in the room temperature luminescence, on exposure to small molecule gases, includes copper aluminum chloride in a group of inorganic materials which can act as a gas sorption sensors. , A plot of gas sorbed by α-CuAlCl 4 at room temperature as a function of relative pressure, P S / P 0 , is shown in Figure . After reaching the relative pressure for the onset of sorption, approximately 0.02 Torr, there is a rapid increase in the amount of gas sorbed up to about 1 equiv of gas per formula unit.…”

Combinatorial and High-Throughput Development of Sensing Materials: The First 10 Years

“…Thus, finding a solution to complement the existing organic fluorescent reagents with more photostable, yet chemically or biologically responsive, nanocrystals is very attractive. It is known that a variety of photoluminescent materials are sensitive to the local environment . In particular, polished or etched bulk CdSe semiconductor crystals , and nanocrystals , were shown to be sensitive to environmental changes.…”

Emission Spectral Properties of Cadmium Sulfide Nanoparticles with Multiphoton Excitation

“…There is growing interest in the use of semiconductor nanoparticles as luminescence probes. Photoluminescence from small inorganic particles was first reported less than 20 years ago. − It is now known that nanosized particles with 10 to 100 Å diameters display quantum confinement and unique optical and physical properties. − There has been progress in synthesizing homogeneous size nanoparticles preparation and stabilization of the surfaces to improve the luminescent properties. − Stabilized semiconductor nanoparticles have been used as biological or intracellular probes, − and there is growing interest in their use as chemical sensors. − The emission spectral properties of some CdS are known to be sensitive to binding of double helical DNA or oligonucleotides. − Nanoparticles with covalently bound DNA are being used to create organized nanocrystals − or to measure DNA hybridization …”

“…[7][8] Stabilized semiconductor nanoparticles have been used as biological or intracellular probes, [9][10] and there is growing interest in their use as chemical sensors. [11][12][13] The emission spectral properties of some CdS are known to be sensitive to binding of double helical DNA or oligonucleotides. [14][15][16] Nanoparticles with covalently bound DNA are being used to create organized nanocrystals [17][18] or to measure DNA hybridization.…”