Optical properties, spectroscopy resonant Raman

The coordination and catalytic properties of the F-430 nickel in MCR have been examined by optical, EXAFS, and resonance Raman spectroscopy. These indicated that the nickel is probably 6-coordinate, and that no sulfur ligands are involved [106,107], The magnetic properties of the Ni(II) state of F-430 have been investigated by MCD spectroscopy [108,109], In both the free coenzyme and the protein-bound form, the 6-coordinate nickel is high-spin Ni(II) (S = 1)... 

Photoelectron spectra of Cd compounds have been reported see Photoelectron Spectroscopy of Transition Metal Systems), but discrepancies have been noted. X-ray photoelectron spectroscopy has been used in surface studies. Simmetry, bond length, and eqnUibrium constants see Equilibrium Constant) of Cd complexes have been determined through IR and Raman spectroscopy. Resonance Raman spectroscopy and Photoluminescence allow investigation of the optical properties of ultrathin CdS films. Electron diffraction studies have been reported. ... 

Boone BE, Shannon C (1996) Optical properties of ultrathin electrodeposited CdS films probed by resonance Raman spectroscopy and photoluminescence. J Phys Chem 100 9480-9484... 

The heme moiety provides de novo designed heme proteins with an intrinsic and spectroscopically rich probe. The interaction of the amide bonds of the peptide or protein with the heme macrocycle provides for an induced circular dichroism spectrum indicative of protein-cofactor interactions. The strong optical properties of the heme macrocycle also make it suitable for resonance Raman spectroscopy. Aside from the heme macrocycle, the encapsulated metal ion itself provides a spectroscopic probe into its electronic structure via EPR spectroscopy and electrochemistry. These spectroscopic and electrochemical tools provide a strong quantitative base for the detailed evaluation of the relative successes of de novo heme proteins. 

The IR spectra of all four crystal modifications were reported by Cady and Smith (1962) and by Holston (1962). The latter did point out some distinguishing features among the polymorphs, but Cady and Smith noted that problems with sample preparation and conversions among forms indicated that the optical properties described by McCrone (1950a) were the basis for the best rapid qualitative and even rough quantitative analysis. Raman spectroscopy, which requires less potentially destructive sample preparation, has been used to distinguish the polymorphs (Goetz and Brill 1979). The low resolution NMR spectra of the four crystal modifications were reported by Landers et al. (1985). The nuclear quadrupole resonance spectrum... 

It is possible to design an optieal sensor by using teehniques other than fluorescence as the detection mode, if there is a change in an optical property of the imprinted polymer after the analyte interacts with the imprinted polymer. Other detection methods include surface plasmon resonance spectroscopy [52-54], Raman [55-57], IR [30,58], photo- and chemiluminescence [59,60] among others [61-63]. A few selected examples are described in the section below. 

Modified anilino squaraines have been widely utilized in surface-enhanced Raman resonance scattering (SERBS) spectroscopy. Their molecular structure displays a quadrupole D-A-D system that is characterized by an electron-deficient cyclobutendione (C Oj) bridge (Figure 5.7). The total structure can be represented in many ways, with the charge homogenously distributed over the entire molecule. Several theoretical studies have been conducted on this class of materials and their unusual nonlinear optical properties [4,81]. 

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