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in publisher: "Arizona State University. Department of Chemistry."  
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Solid electrolytes and impact-resistant ceramics

Description: In this proposal, we describe a program to exploit recent achievements in two distinct areas of materials science, both of them dependent on the independent motion of singly charged ions through an immobile matrix. The first is the area of non-crystalline solid electrolytes in which this laboratory has gained prominence over the past decade. The second is an area proposed for study in our previous proposal and now verified as a principle worthy of considerable further investigation: it involves… more
Date: August 1991
Creator: Angell, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical activation of molecules by metals: Experimental studies of electron distributions and bonding

Description: The formal relationship between measured molecular ionization energies and thermodynamic bond dissociation energies has been developed into a single equation which unifies the treatment of covalent bonds, ionic bonds, and partially ionic bonds. This relationship has been used to clarify the fundamental thermodynamic information relating to metal-hydrogen, metal-alkyl, and metal-metal bond energies. We have been able to obtain a direct observation and measurement of the stabilization energy prov… more
Date: October 1991
Creator: Lichtenberger, Dennis L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Artificial photosynthesis using chlorophyll based carotenoid quinone triads: A brief synopsis of research progress as of 31 December 1986

Description: The design, synthesis and study of a series of carotenoid-chlorophyll-quinone triad molecules which mimic some of the basic photochemistry and photophysics of natural photosynthesis is sought. The first members of this series have now been prepared, and have been found to mimic photosynthetic charge separation, carotenoid antenna function, and carotenoid photoprotection from singlet oxygen damage. Although the triad molecules mimic the general principle of multistep electron transfer which is f… more
Date: 1987~
Creator: Gust, Devans & Moore, Thomas A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads

Description: This research project involves the design, synthesis and study of molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. The knowledge gained from the study of synthetic model systems which abstract features of the natural photosynthetic apparatus can be used to design artificial photosynthetic systems which employ the basic physics and chemistry of photosynthesis to help meet mankind's energy needs. More specifically, the proposed models are designe… more
Date: April 12, 1988
Creator: Gust, J.D. Jr. & Moore, T.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multi-chromophoric species: Synthetic tetrads and pentads

Description: This research project involves the design, synthesis and study of the molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with differ… more
Date: February 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads

Description: This research project involves the design, synthesis and study of molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with different … more
Date: April 12, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multi-chromophoric species: Synthetic tetrads and pentads. Technical progress report, 1987--1990

Description: This research project involves the design, synthesis and study of the molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with differ… more
Date: February 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads. Technical progress report

Description: This research project involves the design, synthesis and study of molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. The knowledge gained from the study of synthetic model systems which abstract features of the natural photosynthetic apparatus can be used to design artificial photosynthetic systems which employ the basic physics and chemistry of photosynthesis to help meet mankind`s energy needs. More specifically, the proposed models are designe… more
Date: April 12, 1988
Creator: Gust, J. D. Jr. & Moore, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Generation, detection and characterization of gas-phase transition metal aggregates and compounds. Progress report, year one

Description: The goal of our research is to employ spectroscopic techniques to characterize the bound portions of the potential energy surface (PES) for chemical systems involving diatomic and triatomic transition metal molecules. The approach incorporates the generation and isolation of new metal compounds via supersonic laser ablation molecular beam techniques. Detection and characterization is achieved using high resolution dye laser induced fluorescence spectroscopy. A major objective is to produce info… more
Date: August 1, 1992
Creator: Steimle, Timothy C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solid state chemistry of rare earth oxides. Technical progress report, 1975--1976. [Pr/sub 7/O/sub 12/; Pr/sub 10/O/sub 18/; HfO/sub 2/. xEr/sub 2/O/sub 3/]

Description: It has been demonstrated that electron microscope images obtained at about 3A resolution for Pr/sub 7/O/sub 12/ are in agreement with calculated images based upon known structures. This establishes the efficacy of crystal structure image interpretation in structural terms, including the defect structure and mechanism of phase reactions, for these types of related phases whose structures are as yet beyond conventional means to determine. Further work on the epsilon (Pr/sub 10/O/sub 18/) phase is… more
Date: April 15, 1976
Creator: Eyring, LeRoy; Skarnulis, A. Jerome; Tuenge, R. T. & Von Dreele, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solid state chemistry of rare earth oxides. Technical progress report, 1974--1975. [High-resolution electron optical methods at 3 A resolution]

Description: Electron microscope images obtained at about 3A resolution for Pr/sub 7/O/sub 12/ (and isomorphous Zr/sub 3/Sc/sub 4/O/sub 12/) are in excellent agreement with calculated images based upon the structure determined separately by total profile neutron powder diffraction analysis. The image calculation programs establish the efficacy of lattice image interpretation in structural terms for these types of related phases whose structures are as yet beyond conventional means to determine. Such images … more
Date: June 25, 1975
Creator: Eyring, LeRoy; Summerville, Edward & Skarnulis, A. Jerome
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Generation, detection and characterization of gas-phase transition metal aggregates and compounds

Description: The goal of our research is to employ spectroscopic techniques to characterize the bound portions of the potential energy surface (PES) for chemical systems involving diatomic and triatomic transition metal molecules. The approach incorporates the generation and isolation of new metal compounds via supersonic laser ablation molecular beam techniques. Detection and characterization is achieved using high resolution dye laser induced fluorescence spectroscopy. A major objective is to produce info… more
Date: 1992~
Creator: Steimle, Timothy C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solid electrolytes and impact-resistant ceramics. [Progress report]

Description: In this proposal, we describe a program to exploit recent achievements in two distinct areas of materials science, both of them dependent on the independent motion of singly charged ions through an immobile matrix. The first is the area of non-crystalline solid electrolytes in which this laboratory has gained prominence over the past decade. The second is an area proposed for study in our previous proposal and now verified as a principle worthy of considerable further investigation: it involves… more
Date: August 1991
Creator: Angell, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads. Technical progress report, 1989

Description: This research project involves the design, synthesis and study of molecules which mimic many of the important aspects of photosynthetic electron and energy transfer. Specifically, the molecules are designed to mimic the following aspects of natural photosynthetic multistep electron transfer: electron donation from a tetrapyrrole excited singlet state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with different … more
Date: April 12, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Polymer-in-salt electrolytes]. Annual report and extension proposal

Description: The research proposed for the current grant consisted of five components, of which the authors have made substantial progress on three and have performed some exploratory work on a sixth for which they present here an argument for extending. The components on which they have made progress are: (1) development of and improvement on the basic polymer-in-salt idea. This will be separated into parts dealing with improvements in salt constitution, and improvements in polymer type, emphasizing the ro… more
Date: 1997
Creator: Angell, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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