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Dissertation45

Creator

Alzola, Joaquin Miguel1
Bae, Youn Jue1
Bancroft, Laura1
Be, Ariana Gray1
Bellcross, Aleia1
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Keyword

Spectroscopy4
Coherence2
Photophysics2
Semiconductors2
electrostatics2
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Physical chemistry[remove]45
Chemistry17
Materials Science8
Organic chemistry6
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Surface Chemistry of Human-Derived Organic Compounds in Indoor Environments

Description:

Human skin oils are significant scavengers of atmospheric oxidants in occupied indoor environments. Many techniques used to study gas-phase transformations of surface films indoors have been limited to off-line bulk analysis, although more surface-selective methodologies are emerging. Here, we present a multi-prong analytical approach to characterizing skin oil ozonolysis. Skin...

Keyword:

squalene, nonlinear spectroscopy, ozonolysis, indoor air, optical profilometry, and surface science

Subject:

Physical chemistry and Chemistry

Creator:

Butman, Jana Lee

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16586 and etdadmin_upload_986300
Fundamental Electron Transfer Dynamics in Donor-Acceptor Compounds: One-, Two-, and Four- Acceptor Systems

Description:

This thesis document is comprised of three research projects. The first investigates the active vibrational modes involved in twisted intramolecular charge transfer in a Julolidine-BODIPY dyad using two-dimensional electronic spectroscopy along with DFT calculations. We identified two types of vibrations, compression and torsional motion, as playing an important role in...

Subject:

Organic chemistry, Physical chemistry, and Chemistry

Creator:

Fisher, Jeremy

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16773 and etdadmin_upload_1014057
Phase-Sensitive Second-Order Nonlinear Spectroscopy of Metal Oxide:Aqueous Interfaces

Description:

Many processes in nature and human-made settings rely on the unique properties of charged metal oxide:aqueous interfaces. Despite their ubiquity, these buried interfaces are challenging to study, since any analytical technique aiming to overcome the relatively small number density of interfacial versus bulk species must be highly sensitive and surface-selective....

Keyword:

solid aqueous interface, second harmonic generation, nonlinear optical spectroscopy, metal oxide, heterodyne detection, and hematite

Subject:

Physical chemistry, Geochemistry, and Chemistry

Creator:

Lozier, Emilie

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16725 and etdadmin_upload_1012560
Colloidal superionics

Description:

This dissertation focuses on the study of the superionic state in multicomponent systems, where the smaller component exhibits delocalization and mobility while still maintaining system compactness through component attractions. Superionic behavior is widely observed in various systems and plays a crucial role in ceramic superionic conductors, which offer high ion...

Keyword:

electrostatics, charge transport, sublattice melting, phase transition, superionic behaviors, and colloidal crystals

Subject:

Physical chemistry, Chemistry, and Condensed matter physics

Creator:

Lin, Yange

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16697 and etdadmin_upload_1009942
Large deviations in non-equilibrium dynamics: Markov models and thermodynamic uncertainty relations

Description:

This manuscript describes and contextualizes the research I performed as a PhD student in Northwestern University. The first three chapters, on Markov chains, stochastic thermodynamics, and large deviation theory, describe three interrelated topics that serve as the background for subsequent research detailed in the next three chapters, on understanding the...

Keyword:

large deviation theory, thermodynamic uncertainty relations, stochastic thermodynamics, and non-equilibrium statistical mechanics

Subject:

Physical chemistry and Statistical physics

Creator:

Fu, Rueih-Sheng

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_994428 and http://dissertations.umi.com/northwestern:16629
Surface-Specific Analysis of α-Pinene Derived Dimers and the Study of Chirality in Biogenic Secondary Organic Aerosol Particles

Description:

Despite the increasing interest in biogenic secondary organic aerosols (SOAs), their role in the climate system remains the greatest source of uncertainty in global models. Cloud formation, critical for the net cooling effect provided by cloud cover, is dependent on the abundance of SOA particles and their ability to activate...

Subject:

Physical chemistry, Atmospheric chemistry, and Chemistry

Creator:

Bellcross, Aleia

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16628 and etdadmin_upload_993914
Non-Equilibrium Structural and Electronic Dynamics in Perovskite Semiconductors

Description:

Recent progress in semiconductor synthesis and photophysics has revealed a host of new materials with exciting properties for applications in optoelectronic devices such as sensors, photovoltaics, solid state lighting, and more. One of the most significant recent additions to the field is the class of hybrid and inorganic materials that...

Subject:

Physical chemistry, Chemistry, and Materials Science

Creator:

Cuthriell, Shelby A

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16650 and etdadmin_upload_1000360
Electrostatic Mechanisms for Shape Selection in Charged Chiral Molecular Assemblies

Description:

How molecular chirality manifests at the nano- to macroscale has been a scientific puzzle since Louis Pasteur discovered biochirality. In general, amphiphilic molecules can organize into a variety of assembly shapes including micelles, spherical vesicles, cylindrical micelles, and planar bilayers. However, when such amphiphilic molecules are chiral, helical ribbons, helicoidal...

Keyword:

self-assembly, soft mattter, electrostatics, membranes, chiral, and charge

Subject:

Physical chemistry, Physics, and Materials Science

Creator:

McCourt, Joseph

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16654 and etdadmin_upload_1000771
Exploring Singlet Fission and Symmetry-Breaking Charge Separation using Ultrafast Optical Spectroscopy

Description:

Understanding the photophysical processes of organic materials is important for utilizing them as functional photonic materials. Typical photophysical processes include intersystem crossing, charge transfer (CT), symmetry-breaking charge separation (SB-CS), singlet fission (SF), etc. There are serval factors that can lead to different photophysical processes, such as the molecular energy levels,...

Subject:

Physical chemistry and Chemistry

Creator:

Lin, Chenjian

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/16/2023

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_947331 and http://dissertations.umi.com/northwestern:16377
Spin Dynamics of Systems with Two or Three Unpaired Spins in Weak or Moderate Exchange Coupling Regime

Description:

This thesis presents results on photophysics and spin dynamics of photoactive organic molecules that possess one unpaired electron spin in the ground state and two or three unpaired spins upon photoexcitation. The excited state dynamics of the systems were studied using transient optical absorption spectroscopies and non-Boltzmann population on the...

Subject:

Physical chemistry and Chemistry

Creator:

Mao, Haochuan

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/16/2023

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_946833 and http://dissertations.umi.com/northwestern:16364

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