Ladder-structured conjugated oligomers

Jason Cranfield

Ladder-structured conjugated oligomers

Jason Cranfield

Research output: Thesis › Master's thesis

Abstract

This project's aim was to synthesis and investigate the properties of series of even-numbered polyazacenes in comparison with an analogous odd numbered series. Three compounds were initially planned to be synthesized, pyrazino [2,3-b] phenazine (L4), 4, 13-dihydro-2,4,6,9, 11, 13-pentaazahexacene (L6H2) and 3,14- dihydro1 ,3,5,7,12,14,16, 18heptaazaoctacene (L8H2) but only L4 was successfully prepared. Standard spectroscopic techniques such as FTIR, NMR and UV-Visible spectroscopy and thermogravimetric analysis have been used to characterize this compound, and to use in its comparison against the previously documented analogous series. The oligomers L4 and quinoxalino [2,3-b] phenazine (L5H2) were vacuum coated onto ITO coated glass slides and analyzed by cyclic voltammetry. Solubility problems led to the need for solution cyclic voltammetry to be used. L4 was compared against phenazine (L5H2) 7,16-Dihydro-5,7,9,14,16,18- hexaazaheptacene (L7H2) and.7,20-Dihydro5,7,9, 11,16,9,18,20,22- octaazanonacene (L9H2). Evidence has been found that L4 does not follow a trend in behavious. defined by "odd-numbered" oligomers of the same general structure.

Original language	English
Qualification	Master of Science by Research (MSc(R))
Awarding Institution	Kingston University
Supervisors/Advisors	Foot, Peter, Supervisor, External person Singer, Richard, Supervisor
Publication status	Accepted/In press - Nov 2009
Externally published	Yes

Bibliographical note

Department: Materials Research Group

Physical Location: This item is held in stock at Kingston University Library.

Keywords

Chemistry

Cite this

@mastersthesis{e39268b2390244ef9cefb85a7fdcd184,

title = "Ladder-structured conjugated oligomers",

abstract = "This project's aim was to synthesis and investigate the properties of series of even-numbered polyazacenes in comparison with an analogous odd numbered series. Three compounds were initially planned to be synthesized, pyrazino [2,3-b] phenazine (L4), 4, 13-dihydro-2,4,6,9, 11, 13-pentaazahexacene (L6H2) and 3,14- dihydro1 ,3,5,7,12,14,16, 18heptaazaoctacene (L8H2) but only L4 was successfully prepared. Standard spectroscopic techniques such as FTIR, NMR and UV-Visible spectroscopy and thermogravimetric analysis have been used to characterize this compound, and to use in its comparison against the previously documented analogous series. The oligomers L4 and quinoxalino [2,3-b] phenazine (L5H2) were vacuum coated onto ITO coated glass slides and analyzed by cyclic voltammetry. Solubility problems led to the need for solution cyclic voltammetry to be used. L4 was compared against phenazine (L5H2) 7,16-Dihydro-5,7,9,14,16,18- hexaazaheptacene (L7H2) and.7,20-Dihydro5,7,9, 11,16,9,18,20,22- octaazanonacene (L9H2). Evidence has been found that L4 does not follow a trend in behavious. defined by {"}odd-numbered{"} oligomers of the same general structure.",

keywords = "Chemistry",

author = "Jason Cranfield",

note = "Department: Materials Research Group Physical Location: This item is held in stock at Kingston University Library.",

year = "2009",

month = nov,

language = "English",

school = "Kingston University",

}

TY - THES

T1 - Ladder-structured conjugated oligomers

AU - Cranfield, Jason

N1 - Department: Materials Research Group Physical Location: This item is held in stock at Kingston University Library.

PY - 2009/11

Y1 - 2009/11

N2 - This project's aim was to synthesis and investigate the properties of series of even-numbered polyazacenes in comparison with an analogous odd numbered series. Three compounds were initially planned to be synthesized, pyrazino [2,3-b] phenazine (L4), 4, 13-dihydro-2,4,6,9, 11, 13-pentaazahexacene (L6H2) and 3,14- dihydro1 ,3,5,7,12,14,16, 18heptaazaoctacene (L8H2) but only L4 was successfully prepared. Standard spectroscopic techniques such as FTIR, NMR and UV-Visible spectroscopy and thermogravimetric analysis have been used to characterize this compound, and to use in its comparison against the previously documented analogous series. The oligomers L4 and quinoxalino [2,3-b] phenazine (L5H2) were vacuum coated onto ITO coated glass slides and analyzed by cyclic voltammetry. Solubility problems led to the need for solution cyclic voltammetry to be used. L4 was compared against phenazine (L5H2) 7,16-Dihydro-5,7,9,14,16,18- hexaazaheptacene (L7H2) and.7,20-Dihydro5,7,9, 11,16,9,18,20,22- octaazanonacene (L9H2). Evidence has been found that L4 does not follow a trend in behavious. defined by "odd-numbered" oligomers of the same general structure.

AB - This project's aim was to synthesis and investigate the properties of series of even-numbered polyazacenes in comparison with an analogous odd numbered series. Three compounds were initially planned to be synthesized, pyrazino [2,3-b] phenazine (L4), 4, 13-dihydro-2,4,6,9, 11, 13-pentaazahexacene (L6H2) and 3,14- dihydro1 ,3,5,7,12,14,16, 18heptaazaoctacene (L8H2) but only L4 was successfully prepared. Standard spectroscopic techniques such as FTIR, NMR and UV-Visible spectroscopy and thermogravimetric analysis have been used to characterize this compound, and to use in its comparison against the previously documented analogous series. The oligomers L4 and quinoxalino [2,3-b] phenazine (L5H2) were vacuum coated onto ITO coated glass slides and analyzed by cyclic voltammetry. Solubility problems led to the need for solution cyclic voltammetry to be used. L4 was compared against phenazine (L5H2) 7,16-Dihydro-5,7,9,14,16,18- hexaazaheptacene (L7H2) and.7,20-Dihydro5,7,9, 11,16,9,18,20,22- octaazanonacene (L9H2). Evidence has been found that L4 does not follow a trend in behavious. defined by "odd-numbered" oligomers of the same general structure.

KW - Chemistry

M3 - Master's thesis

ER -

Ladder-structured conjugated oligomers

Abstract

Bibliographical note

Keywords

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Cite this