Limit your search
Search Constraints
Number of results to display per page
Search Results
-
- Description:
- Recent progress in the field of nanomaterials has enabled significant advances in optoelectronic devices such as solar cells, light-emitting diodes, photocatalysts, and sensors. Nanoparticles feature superior optical and electronic properties that arise from quantum confinement and therefore cannot be attained used bulk materials. However, further developments in the field of...
- Keyword:
- ultrafast spectroscopy, transient absorption, nanoparticles, two-dimensional, nanoplatelets, and electronic processes
- Subject:
- Chemistry
- Creator:
- Brumberg, Alexandra
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_845490 and http://dissertations.umi.com/northwestern:15773
-
- Description:
- Metallic conductivity and broken inversion symmetry were long thought to be contraindicated properties, under the assumption that long-range Coulombic interactions (screened by free charge carriers) were necessary for coordinated polar displacements. Within the past decade, the discovery of polar metals has prompted a rethinking of the relationship between metallicity and...
- Keyword:
- first principles, contraindicated, polar, phase, ferroelectric, and metal
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Hickox-Young, Daniel Timothy
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15762 and etdadmin_upload_845260
-
- Description:
- This thesis describes the synthesis and photophysical characterization of low-dimensionalmaterials—including thin-film semiconductors, colloidal quantum dots, and molecules—with the broader motivation of integrating them into mixed-dimensional heterostructures with novel responses to external stimuli. Due to their high surface area to volume ratio and incomplete dielectric screening, mixed-dimensional heterostructures have high sensitivity...
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Olding, Jack Nicklaus
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15691 and etdadmin_upload_840718
-
- Description:
- Nanoparticles (NPs) are emerging as attractive drug carriers in therapeutic and diagnostic applications. The physiochemical properties of NPs, such as particle size, shape, and surface chemistry, play important roles in the functions of engineered nanoconstructs−NP cores with surface ligands. Recent work has screened these properties by monitoring cellular uptake and/or...
- Subject:
- Chemistry
- Creator:
- Liu, Tingting
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_844987 and http://dissertations.umi.com/northwestern:15753
-
- Description:
- The building blocks of life are proteins. These incredible nanostructures are responsible for forming the diverse infrastructure of living systems and for performing countless biological functions. In Nature, these materials and systems achieve structural complexity and function through highly regulated and controlled assembly of protein building blocks, driven by specific...
- Keyword:
- Hierarchical, Supramolecular , Proteins, and Self-assembly
- Subject:
- Nanotechnology and Chemistry
- Creator:
- Hayes, Oliver George
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_835884 and http://dissertations.umi.com/northwestern:15660
-
- Description:
- Oligonucleotides can be used to modulate the regulation of pathological genes that are associated with various diseases. However, due to biological barriers, efficient delivery of oligonucleotides, especially to extrahepatic tissues, remains a challenge. To overcome these barriers, multiple delivery strategies have been developed, ranging from medicinal chemistry to nanotechnology. Nanoparticle-based...
- Keyword:
- surface modification, biodistribution, and spherical nucleic acids
- Subject:
- Chemistry
- Creator:
- Zhang, Wuliang
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_830130 and http://dissertations.umi.com/northwestern:15627
-
- Description:
- Nanoparticle synthesis is capable of producing particles with any combination of structure, chemistry, size, shape, and surface. All of the different combinations of these physical properties can produce nanoparticles with almost countless materials properties suited for many applications. Given this interest in using nanoparticles in so many different fields, including...
- Keyword:
- nanoparticle growth, thermodynamics, nanoparticles, kinetics, hydrothermal synthesis, and crystal growth
- Subject:
- Inorganic chemistry, Chemistry, and Materials Science
- Creator:
- Ly, Tiffany
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15645 and etdadmin_upload_832870
-
- Description:
- One of the central challenges in solid-state chemistry is synthetic control over structure. Owing to limited reactivity of Pb with transition metals at ambient pressure and high temperature as well as the variety of properties that emerge from the few known binary transition-metal–Pb compounds, this research focuses on accessing and...
- Subject:
- Chemistry and Materials Science
- Creator:
- Tamerius, Alexandra
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_845128 and http://dissertations.umi.com/northwestern:15755
-
- Description:
- High-throughput methods enable rapid experimentation and/or screening of thousands of samples simultaneously. Mass-spectrometry based methods are of particular interest since they provide a label-free way to detect all species present in a given reaction mixture. To circumvent sample preparation and purification—which is typically a slow process—the Mrksich group developed a...
- Keyword:
- SAMDI, Biochemical Assays, High-Throughput, Single-Cell, and Mass Spectrometry
- Subject:
- Chemistry
- Creator:
- Hakim Moully, Elamar
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/06/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15661 and etdadmin_upload_836023
-
- Description:
- Quantum dots (QDs) are promising photocatalysts due to their large extinction coefficient, large surface area-to-volume ratio, and stability upon irradiation. QDs have been studied in photocatalytic hydrogen production, CO2 reduction, and reduction of small organic molecules such as nitrobenzene. This dissertation describes the application of QDs in two photocatalytic cross-coupling...
- Subject:
- Chemistry
- Creator:
- Zhang, Zhengyi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15493 and etdadmin_upload_798062
-
- Description:
- Mixed-dimensional heterojunctions between two-dimensional (2D) materials and organic semiconductors is a rapidly growing field. This is motivated by the promise of leveraging the extraordinary properties of 2D materials with the synthetic tunability and reconfigurability of organic electronics, allowing the realization of new physics or devices that are not possible in...
- Keyword:
- organic - inorganic hybrid, heterostructures, mixed dimensional, and 2d materials
- Subject:
- Nanoscience, Chemistry, and Materials Science
- Creator:
- Amsterdam, Samuel
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15597 and etdadmin_upload_820903
-
- Description:
- In the first two decades of the 21st century, metal organic frameworks (MOFs) have attracted much attention in both fundamental-research and-industrial application areas. Derived from a vast library of both inorganic metal nodes and organic linker bridges, MOFs are crystalline materials whose structures and chemical environments can both be tuned...
- Keyword:
- Catalysis, Hierarchically porous materials, Water treatment, and Metal organic frameworks
- Subject:
- Chemistry
- Creator:
- Zhang, Furui
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_818384 and http://dissertations.umi.com/northwestern:15561
-
- Description:
- Chirality and polarity describe orthogonal mechanisms of inversion symmetry breaking, which is the origin of valuable properties in crystalline materials including nonlinear optical activity, ferroelectricity, and piezoelectricity. Noncentrosymmetric (NCS) materials have numerous applications yet opportunities remain for cooperative coupling between chiral and polar basic building units to realize high-performance materials....
- Keyword:
- chirality, inversion symmetry, and racemates
- Subject:
- Inorganic chemistry and Chemistry
- Creator:
- Nisbet, Matthew Lander
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15502 and etdadmin_upload_804610
-
- Description:
- The opposing activities of phosphatases and kinases determine the phosphorylation status of proteins, yet kinases have received disproportionate attention in studies of cellular processes, with the roles of phosphatases remaining less understood. This dissertation describes the use of self-assembled monolayer laser desorption/ionization mass spectrometry (SAMDI-MS) together with peptide arrays to...
- Keyword:
- SAMDI-MS, Phosphatases, High-Throughput Experiments, Enzyme Specificity, β-Catenin, and Peptide Arrays
- Subject:
- Chemistry, Biochemistry, and Cellular biology
- Creator:
- Huang, Che-Fan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_819016 and http://dissertations.umi.com/northwestern:15570
-
- Description:
- Two-dimensional (2D) covalent organic frameworks (COFs) are a class of crystalline polymer networks that polymerize and crystallize into layered structures, characterized by their atomically precise structure, permanent porosity and high modularity. Imine-linked COFs are one of the most important and promising classes of macromolecular sheets, which form by the condensation...
- Keyword:
- Covalent organic frameworks
- Subject:
- Polymer chemistry and Chemistry
- Creator:
- Ji, Woojung
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15494 and etdadmin_upload_799668
-
- Description:
- Molecular-oriented single-site heterogeneous catalysis is a powerful approach to address the long-lasting challenge of the structure-activity relationship in catalysis, as it allows molecular level control of the catalytic centers and thus the elucidation of reaction mechanisms. In this dissertation, single-site molybdenum-dioxo species have been immobilized on carbon supports, i.e. activated...
- Keyword:
- Molybdenum-oxo, Carbon support, and Single-site heterogeneous catalysis
- Subject:
- Chemistry
- Creator:
- Li, Jiaqi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15519 and etdadmin_upload_813943
-
- Description:
- The idea that structure determines the properties of a material is a powerful concept in chemistry and in all fields in which chemistry is important, including engineering, medicine, and materials science. My research aims to better understand the structure-property relationships of a class of materials known as metal–organic frameworks (MOFs)....
- Keyword:
- structure property relationships, contrast media, diamond anvil cell , metal–organic framework, nanomaterials, and materials chemistry
- Subject:
- Nanotechnology, Chemistry, and Materials Science
- Creator:
- Robison, Lee
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_795236 and http://dissertations.umi.com/northwestern:15463
-
- Description:
- Two-dimensional (2D) covalent organic frameworks (COFs) are a class of crystalline polymer networks that polymerize and crystallize into layered structures, characterized by their atomically precise structure, permanent porosity and high modularity. Imine-linked COFs are one of the most important and promising classes of macromolecular sheets, which form by the condensation...
- Keyword:
- Covalent organic frameworks
- Subject:
- Polymer chemistry and Chemistry
- Creator:
- Ji, Woojung
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15494 and etdadmin_upload_799668
-
- Description:
- Gold nanoparticles (AuNPs) display unique characteristics compared to their macro-counterparts that are dependent on shape, size, and attached surface molecules. Methods have been developed to precisely control both size and shape of AuNPs for specific applications. The biocompatibility, plasmonic properties, and ease of functionalization with thiolated molecules, make gold nanoparticles...
- Keyword:
- gold nanopaticles, therapeutics, DNA, cancer vaccine, and plasmonics
- Subject:
- Nanotechnology, Chemistry, and Biology
- Creator:
- Coughlin, Emma
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15532 and etdadmin_upload_815702
-
- Description:
- Functional electronic materials have transformed modern society toward a highly digitized and interconnected global community. The ever-growing demand for electronic devices with superior functionality poses a great challenge to the state-of-the-art field-effect transistors owing to the limited charge density afforded by silicon. Materials scientists and chemists have been working closely...
- Keyword:
- Bayesian optimization, Gaussian processes, deep neural network, computational materials science, and metal-insulator transition
- Subject:
- Chemistry
- Creator:
- Wang, Yiqun
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_815597 and http://dissertations.umi.com/northwestern:15531