Synthesis and properties of conjugated metallo-supramolecular polymers
Příprava a vlastnosti konjugovaných organokovových polymerů
dissertation thesis (DEFENDED)
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http://hdl.handle.net/20.500.11956/77975Identifiers
Study Information System: 114426
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- Kvalifikační práce [19109]
Author
Advisor
Referee
Jindřich, Jindřich
Strachota, Adam
Faculty / Institute
Faculty of Science
Discipline
-
Department
Department of Physical and Macromolecular Chemistry
Date of defense
18. 2. 2016
Publisher
Univerzita Karlova, Přírodovědecká fakultaLanguage
English
Grade
Pass
bis(tpy tpy ':6',2''-terpyridin-4'-yl) s -bromhexyl, 6-(4- methoxyfenoxy)hexyl) mono- loky. Tyto - 3, CH2Cl2 - trieth polymery rozpustné v nad elektron- i -Mt2+ -U, ii) iii - jejich vazba na koncové terpyridinové ligandy oskopie, SEC a viskozimetrie. sahu delokalizace tpy-Mt2+ -tpy - - - - - -
More than twenty new bis(tpy)oligothiophenes (tpy stands for 2,2':6',2''-terpyridin-4'-yl) with unsubstituted as well as substituted (with methyl, hexyl, bromohexyl or 6-(4- methoxyphenoxy)hexyl groups) central blocks comprising one to four thiophene rings have been prepared as building blocks (unimers) for constitutional dynamic metallo- supramolecular polymers (MSPs) soluble in common organic solvents. In addition a series of ionic unimers soluble in alcohols and partially in water have been prepared by modification of bromohexyl unimers with trimethylamine or triethylphosphine. Spectroscopic studies have shown that the steric hindrances prevail over the electronic effects of substituents as regards the impact on the delocalization of electrons along unimer chains. Unimers with high steric hindrances in the middle of the central oligothiophene block were found to behave nearly like the unimers with half central block. Three stages of the assembly of MSPs from unimers and metal ions in solutions were characterized by the exclusion chromatography: (i) formation of dimers U-Mt2+ -U in the early stages of assembling, (ii) assembly to longer MSPs chains, and (iii) end-capping with surplus metal ions and partial decomposition of MSPs chains. The observed changes in optical absorption spectra indicate a...