자료유형  

 학위논문

Control Number  

0017161105

International Standard Book Number  

9798382715414

Dewey Decimal Classification Number  

547

Main Entry-Personal Name  

Miller, Ethan G.

Publication, Distribution, etc. (Imprint  

[S.l.] : University of Colorado at Boulder., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

257 p.

General Note  

Source: Dissertations Abstracts International, Volume: 85-11, Section: B.

General Note  

Advisor: Damrauer, Niels H.;Sammakia, Tarek.

Dissertation Note  

Thesis (Ph.D.)--University of Colorado at Boulder, 2024.

Summary, Etc.  

요약Systematic study of dynamic photophysical processes such as Singlet Fission (SF) and Triplet-Triplet Annihilation Upconversion (TTAUC) requires an abundance of viable samples. Structures which showcase these abilities are relatively rare and can feature complex syntheses with a variety of transformations involving sensitive intermediates. Pursuit of fixed geometry targets in our lab's previous efforts involved sequences of reactions in excess of ten steps, and with small overall yields. This thesis details early, cycloaddition-centered efforts, and goes on to describe the development of a new method for rigid polyacene dimer formation with shorter routes and higher yields, employing Catellani-like palladium catalysis for annulations between strained bicyclic fragments and halogenated polyacene feedstock. Through a systematic investigation of key reaction parameters, the working temperature of this modified CANAL protocol was reduced from over one-hundred degrees Celsius to seventy or, in some cases, sixty degrees. Modification of the solvent environment together with this reduction in temperature permits the use of linear polyacene starting materials containing up to at least five rings, and these new conditions were employed to obtain a small library of new anthracene, tetracene, and pentacene dimers suitable for study of SF and TTAUC.

Subject Added Entry-Topical Term  

Organic chemistry.

Subject Added Entry-Topical Term  

Materials science.

Subject Added Entry-Topical Term  

Chemistry.

Subject Added Entry-Topical Term  

Analytical chemistry.

Index Term-Uncontrolled  

Catellani

Index Term-Uncontrolled  

Polyacene

Index Term-Uncontrolled  

Singlet Fission

Index Term-Uncontrolled  

Triplet annihilation

Added Entry-Corporate Name  

University of Colorado at Boulder Chemistry

Host Item Entry  

Dissertations Abstracts International. 85-11B.

Electronic Location and Access  

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Control Number  

joongbu:656546