Raman spectra of dipicolinic acid in crystalline and liquid environments.
نویسندگان
چکیده
Raman spectra of dipicolinic acid (DPA) are important for detection of bacterial spores, since DPA and its salts present one of their major components. The implementation of a deeply cooled CCD camera in combination with pulsed excitation at 532 nm allowed measuring well-resolved Raman spectra of the DPA in different forms. Powder preparations, crystals grown from saturated solutions and aqueous solutions of the DPA were studied. The spectral features in different environments and comparison with the spectra obtained by other methods are discussed.
منابع مشابه
Multiple-trap laser tweezers Raman spectroscopy for simultaneous monitoring of the biological dynamics of multiple individual cells.
We report the development of a multiple-trap laser tweezers Raman spectroscopy (LTRS) array for simultaneously acquiring Raman spectra of individual cells in physiological environments. This LTRS-array technique was also combined with phase contrast and fluorescence microscopy, allowing measurement of Raman spectra, refractility, and fluorescence images of individual cells with a temporal resol...
متن کاملSpectroscopy, Structural, and Optical Investigations of NiFe2O4 Ferrite
Ni ferrite crystalline material is synthesized using a sol-gel method at two different temperatures. The vibrational and stretching modes, crystalline phase, size distribution and morphology of the products are investigated via Raman back-scattering and Fourier transform infrared (FTIR) spectroscopy, XRD and FESEM, respectively. Vibrational modes of spinel ferrite are observed at Raman and FTIR...
متن کاملAn electrochemical surface-enhanced Raman spectroscopy approach to anthrax detection
Metal film over nanosphere (MFON) electrodes are excellent substrates for surface-enhanced Raman scattering (SERS) spectroscopy. These surfaces are produced by vapor deposition of a metal film over nanospheres that are assembled in a hexagonally close packed arrangement. The efficiency and reproducibility of AgFON electrode as SERS substrates are confirmed by the repeatability of the electroche...
متن کاملSpectroscopic properties of dipicolinic acid and its dianion
If robust spectroscopic techniques are to be developed for the detection and identification of pathogens, one must understand the relevant spectroscopic properties of the target molecules. In this paper, we employ density functional theory (DFT) to study the structural, electronic, vibrational, optical, and magnetic properties of dipicolinic acid (DPA) and its dianion DPA . Our full geometrical...
متن کاملRaman Study of the Photochemistry of Maleic Acid Adsorbed on the Surface of Colloidal Silver
The surface-enhanced Raman scattering (SERS) spectra of maleic (cis; 2-butaneoic acid) and fumaric (trans; 2-butaneoic acid) acids adsorbed on aqueous silver sol particles are reported. These two acids form two groups of isomers which differ only in the relative positions of the two carboxylate groups. The photochemistry of maleic and fumaric acids adsorbed on the surface of silver colloids...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
دوره 61 4 شماره
صفحات -
تاریخ انتشار 2005