MEASUREMENT OF VIBRATIONAL CIRCULAR DICHROISM BELOW 600 CM-1 : PROGRESS TOWARDS MEETING THE CHALLENGE

作者: Prasad L. Polavarapu , Zhengyu Deng

DOI: 10.1366/0003702963905826

关键词: Circular dichroismChemistryCircular polarizationBeam splitterOpticsVibrational circular dichroismPolarization (waves)InterferometryFar infrared

摘要: The measurement of vibrational circular dichroism (VCD) below ∼600 cm-1 is one the experimental challenges current times. Polarization-division interferometry considered to be most efficient approach for realizing these measurements. A crucial component successful applications this beamsplitter, which divides incoming beam according polarization. Free-standing metal wires and deposited on a mylar substrate have been employed as beamsplitters, their performance has evaluated ∼700-10 region. VCD measurements obtained enantiomers α-pinene in 400-250 region are presented. status future developments needed routine far-infrared summarized.

参考文章(27)
Laurence A. Nafie, Mario Citra, N. Ragunathan, Gu-Sheng Yu, Diping Che, Chapter 3 Instrumental methods of infrared and Raman vibrational optical activity Techniques and Instrumentation in Analytical Chemistry. ,vol. 14, pp. 53- 89 ,(1994) , 10.1016/S0167-9244(08)70176-8
Jennifer A. Bardwell, Michael J. Dignam, Fourier Transform Polarimetry Springer, Boston, MA. pp. 415- 443 ,(1987) , 10.1007/978-1-4684-7776-4_22
James C. Kemp, Piezo-Optical Birefringence Modulators: New Use for a Long-Known Effect Journal of the Optical Society of America. ,vol. 59, pp. 950- 954 ,(1969) , 10.1364/JOSA.59.000950
F. Devlin, P. J. Stephens, Vibrational Circular Dichroism Measurement in the Frequency Range of 800 to 650 cm−1 Applied Spectroscopy. ,vol. 41, pp. 1142- 1144 ,(1987) , 10.1366/0003702874447581
Günter Georg Hoffmann, Bernhard Schrader, Günther Snatzke, Photoelastic modulator for the mid‐IR range down to 33 μm with inexpensive and simple control electronics Review of Scientific Instruments. ,vol. 58, pp. 1675- 1677 ,(1987) , 10.1063/1.1139656
Hatsuo Ishida, Yuichi Ishino, Henry Buijs, Carl Tripp, Michael J. Dignam, Polarization-Modulation FT-IR Reflection Spectroscopy Using a Polarizing Michelson Interferometer: Applied Spectroscopy. ,vol. 41, pp. 1288- 1294 ,(1987) , 10.1366/0003702874447167
D. Tsankov, T. Eggimann, H. Wieser, Alternative Design for Improved FT-IR/VCD Capabilities Applied Spectroscopy. ,vol. 49, pp. 132- 138 ,(1995) , 10.1366/0003702953963292
Prasad L. Polavarapu, Zhengyu Deng, Stephen Weibel, Polarization-Division Beamsplitters with KBr and KRS-5 Substrates for Fourier Transform Infrared Spectroscopy Applied Spectroscopy. ,vol. 50, pp. 98- 101 ,(1996) , 10.1366/0003702963906672
Prasad L. Polavarapu, Zhengyu Deng, Gang-Chi Chen, Polarization-Division Interferometry: Time-Resolved Infrared Vibrational Dichroism Spectroscopy Applied Spectroscopy. ,vol. 49, pp. 229- 236 ,(1995) , 10.1366/0003702953963797
M. Diem, G. M. Roberts, O. Lee, A. Barlow, Design and Performance of an Optimized Dispersive Infrared Dichrograph Applied Spectroscopy. ,vol. 42, pp. 20- 27 ,(1988) , 10.1366/0003702884428428