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Development of Newly Built Chirped-pulsed Fourier Transform Microwave (CP-FTMW) Spectrometer for Studying Biomolecules in the Gas Phase

Bird, Ryan George (2011) Development of Newly Built Chirped-pulsed Fourier Transform Microwave (CP-FTMW) Spectrometer for Studying Biomolecules in the Gas Phase. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Recent advances in the technology of oscilloscopes and digital waveform generators have made it possible to shorten collection times, increase scan bandwidths and improve the overall sensitivity of microwave spectroscopy. Thus, microwave spectroscopy has become a powerful tool for the determination of the structures of molecules. The Pate group, at the University of Virginia, has developed a new technique called chirped-pulse Fourier transform microwave (CP-FTMW) spectroscopy that has the ability to measure the broadband pure rotational spectra of large molecules. Working in collaboration with the Pate group, we have developed, at the University of Pittsburgh, a small version of the UVa spectrometer. This version of the CP-FTMW spectrometer uses a narrower bandwidth pulse, ~500 MHz, which makes it possible to record a spectrum using lower power amplifiers at significantly reduced cost. Using this new spectrometer the pure rotational spectra of N,N΄-dimethylaniline, 4,4'-dimethylaminobenzonitrile, o-toluidine, m-toluidine, 4-fluorobenzyl alcohol, valeric acid, and δ-valerolactam were collected and studied. From these spectra, their three-dimensional structure, bonding properties, and intermolecular interactions were determined.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Bird, Ryan
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairPratt, David W,PRATT@pitt.eduPRATT
Committee MemberWeber, Stephen G.sweber@pitt.eduSWEBER
Committee MemberSaxena, Sunil K.sksaxena@pitt.eduSKSAXENA
Committee MemberSears, Trevor
Date: 16 September 2011
Date Type: Completion
Defense Date: 27 July 2010
Approval Date: 16 September 2011
Submission Date: 13 July 2011
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: δ-valerolactam; 4-fluorobenzyl alcohol; 44’-dimethylaminobenzonitrile; internal rotor; NN΄-dimethylaniline; nuclear quadrupole; Chirped-pulsed Fourier Transform Microwave; m-toluidine; o-toluidine; valeric acid; 5-aminovaleric acid
Other ID:, etd-07132011-204049
Date Deposited: 10 Nov 2011 19:51
Last Modified: 15 Nov 2016 13:45


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