Index Catalog // ScholarsArchive@OSU

Excited state molecular structural evolution and chemical reactivity studied by femtosecond stimulated Raman spectroscopy

Creator:: Han, Fangyuan
Abstract:: In this dissertation, my research work on excited state dynamics of small organic molecules in solutions is presented. Using femtosecond stimulated Raman spectroscopy (FSRS) as the main experimental tool, the excited state hydrogen-bonding dynamics (ESHBD) of Coumarin 102, a common laser dye molecule, in ethanol solution is examined with <150...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Chong Fang In this dissertation, my research work on excited state dynamics of small

Investigating Low-Frequency Vibrations in Condensed Matter Using Time-Resolved Third-Harmonic Generation Spectroscopy

Creator:: Wang, Liang
Abstract:: In this thesis, I present a new method we developed to study low frequency (< 700 cm⁻¹) vibrational dynamics: Time-resolved third-harmonic generation (TRTHG) spectroscopy. Among a variety of vibrational spectroscopy techniques, TRTHG differentiates itself with robustness, versatility, and simplicity. In TRTHG experiment, that involves only two ultrashort laser pulses, the...
Resource Type:: Masters Thesis
Full Text:: Fang In this thesis, I present a new method we developed to study low frequency

Femtosecond Stimulated Raman Studies of Excited State Structural Events

Creator:: Tang, Longteng
Abstract:: Femtosecond stimulated Raman spectroscopy (FSRS) is an ultrafast vibrational technique which allows rapid collection of Raman spectra with simultaneously high temporal and spectral resolution. With the recent development of FSRS methodology, three FSRS techniques (conventional, tunable, and anti-Stokes) have been implemented in our laboratory to dissect the excited state structural...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Chong Fang Femtosecond stimulated Raman spectroscopy (FSRS) is an ultrafast vibrational

Tracking Excited State Proton Transfer and Inhibition with Ultrafast Raman and Transient Absorption Spectroscopy

Creator:: Oscar, Breland G.
Abstract:: In this dissertation, excited state proton transfer (ESPT) and its inhibition in solution and protein environments are revealed using both femtosecond transient absorption (fs-TA) spectroscopy and femtosecond stimulated Raman spectroscopy (FSRS). Using a tunable Raman pump to enhance transient vibrational features of the photoacidic chromophore HPTS in methanol and methanol...
Resource Type:: Dissertation
Full Text:: Chemistry 1990, 41 (1), 647-681. 19. Liu, W.; Tang, L.; Oscar, B. G.; Wang, Y.; Chen, C.; Fang, C

Optical Development and Materials Applications of Tunable Femtosecond Stimulated Raman Spectroscopy

Creator:: Zhu, Liangdong
Abstract:: To obtain a mechanistic understanding of the chemical processes, techniques that offer a frame-by-frame visualization of molecular structure during a reaction are of vital importance. Numerous efforts and advances have been made in order to acquire such vivid molecular “movies”, especially in the electronic excited state. Ultrafast molecular spectroscopy method...
Resource Type:: Dissertation
Full Text:: , C. Chen, and C. Fang, "Tracking Ultrafast Vibrational Cooling during Excited-State Proton Transfer

Tracking Photoinduced Primary Events with Femtosecond Stimulated Raman Spectroscopy and Calculations

Creator:: Wang, Yanli
Abstract:: Femtosecond stimulated Raman spectroscopy (FSRS) is a powerful ultrafast technique which can track photoinduced excited state structural events on femtosecond (fs) to picosecond (ps) timescales. In addition to high temporal and spectral resolutions, FSRS provides a broad spectral window from ca. 100—2000 cm-1 for detection, enabling the direct mapping of...
Resource Type:: Dissertation
Full Text:: Abstract approved: _____________________________________________________ Chong Fang Femtosecond

Dynamics and Design of Green Fluorescent Protein-Inspired Superphotoacids and Red-Emitting Fluorophores with Transient Absorption and Femtosecond Stimulated Raman Spectroscopy

Creator:: Chen, Cheng
Abstract:: In the past decades, femtosecond stimulated Raman spectroscopy (FSRS) has been gaining tremendous popularity in fundamental sciences stemming from chemistry to biology. It is capable of capturing both equilibrium and non-equilibrium structural information across a broad range of timescales with simultaneously high temporal and spectral resolutions. Femtosecond transient absorption spectroscopy...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Cheng Chen for

Revealing Ultrafast Dynamics and Functional Basis of Potential Biomedical Tools from Calcium Sensing to Optogenetics

Creator:: Tachibana, Sean R.
Abstract:: Photoactivated biomedical tools like fluorescent biosensors and optogenetic proteins have increased in popularity due to the precision targeting and activation used for in vivo applications. In nature, the initially discovered parent proteins exhibit properties such as fluorescence quantum yield (FQY), fluorescence color, and photoswitching dynamics that are unfavorable in mammalian...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Chong Fang “The journey of 1000 miles begins with a single step.” – Miyamoto Musashi

Molecular Dynamics on REX-GECO1 Reveal Structural Features Governing Fluorescence

Creator:: Rozanov, Nikita
Abstract:: Fluorescent proteins have emerged as an essential toolset for bioimaging, creating a demand for engineering proteins with new and improved fluorescent properties. In this thesis, I explore the atomistic structure of REX-GECO1, a newly engineered protein biosensor that has unique optical properties. Since this protein has no available crystal structure,...
Resource Type:: Undergraduate Thesis
Full Text:: Features Governing Fluorescence Abstract approved: Chong Fang Fluorescent proteins have emerged as an

Capturing Molecular Movies of Organic and Organometallic Systems in Solution by Ultrafast Spectroscopy

Creator:: Boulanger, Sean A.
Abstract:: Ultrafast spectroscopy can exploit the structure-function relationship of chemical- and biological-based systems. More specifically, femtosecond stimulated Raman spectroscopy (FSRS) provides ground- and excited-state vibrational information with simultaneously high spectral (spatial) and temporal resolutions. The electronic counterpart, femtosecond transient absorption (fs-TA), complements FSRS data analysis as part of a comprehensive approach...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Chong Fang Ultrafast spectroscopy can exploit the structure-function relationship of

ScholarsArchive@OSU

Excited state molecular structural evolution and chemical reactivity studied by femtosecond stimulated Raman spectroscopy

Investigating Low-Frequency Vibrations in Condensed Matter Using Time-Resolved Third-Harmonic Generation Spectroscopy

Femtosecond Stimulated Raman Studies of Excited State Structural Events

Tracking Excited State Proton Transfer and Inhibition with Ultrafast Raman and Transient Absorption Spectroscopy

Optical Development and Materials Applications of Tunable Femtosecond Stimulated Raman Spectroscopy

Tracking Photoinduced Primary Events with Femtosecond Stimulated Raman Spectroscopy and Calculations

Dynamics and Design of Green Fluorescent Protein-Inspired Superphotoacids and Red-Emitting Fluorophores with Transient Absorption and Femtosecond Stimulated Raman Spectroscopy

Revealing Ultrafast Dynamics and Functional Basis of Potential Biomedical Tools from Calcium Sensing to Optogenetics

Molecular Dynamics on REX-GECO1 Reveal Structural Features Governing Fluorescence

Capturing Molecular Movies of Organic and Organometallic Systems in Solution by Ultrafast Spectroscopy

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