The Resource Examination of selective quenching agents for polycyclic aromatic hydrocarbons in polyamido amine dendrimers, by Deborah A. Wade

Examination of selective quenching agents for polycyclic aromatic hydrocarbons in polyamido amine dendrimers, by Deborah A. Wade

Label
Examination of selective quenching agents for polycyclic aromatic hydrocarbons in polyamido amine dendrimers
Title
Examination of selective quenching agents for polycyclic aromatic hydrocarbons in polyamido amine dendrimers
Statement of responsibility
by Deborah A. Wade
Title variation
Examination of quenchers for PAH's in PAMAM
Creator
Subject
Language
eng
Summary
Carboxylate-terminated polyamido amine (PAMAM-CT) dendrimers have been compared to anionic micelles. It has been found that though the PAHs do associate with the dendrimers, the PAHs are able to penetrate farther into the dendrimer's interior away from the palisade region and surface groups. The degree of association appears to be independent of dendrimer and PAH size. Unlike in traditional anionic micelles, the nitromethane selective quenching of the fluorescence of the alternant, as opposed to nonalternant, PAHs is retained in unimolecular PAMAM-CT dendrimers. Large, positively-charged surfactants, like cetylpyridinium chloride (CPC) will associate with the negatively-charged surface groups of the dendrimers and cause precipitation. Because of the aggregation of the dendrimers by CPC, the parent moiety, pyridinium chloride (PC) was examined as a quenching agent. Experimental results clearly show that PC is indeed a selective fluorescence quenching agent of alternant PAHs in acetonitrile and water. Since it was not previously investigated, PC was examined as a selective quenching agent in the presence of anionic micelles, sodium dodecanoate and sodium ocaanoate, with the same surface groups. Unfortunately, sodium dodecanoate precipitated from solution on addition of PC. Selective quenching of alternant PAHs was observed in the sodium octanoate and sodium dodecylsulfate micelle. With the addition of PC, the larger PAMAM-CT dendrimer, G5.5, did precipitate from solution, while the smaller dendrimer, PAMAM-CT G4.5, did not. The dendrimer "protected" the PAHs from the environment and prevented PC from quenching the alternant PAHs. Future studies should examine whether a sulfateterminated PAMAM would result in similar effect or behave more like the SDS micelle
Additional physical form
Also available on the Internet.
Cataloging source
MUU
http://library.link/vocab/creatorDate
1973-
http://library.link/vocab/creatorName
Wade, Deborah A.
Degree
Ph. D.
Dissertation year
2000.
Government publication
government publication of a state province territory dependency etc
Granting institution
University of Missouri-Columbia
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • bibliography
  • theses
http://library.link/vocab/subjectName
  • Polycyclic aromatic hydrocarbons
  • Polyamines
  • Dendrimers
Target audience
specialized
Label
Examination of selective quenching agents for polycyclic aromatic hydrocarbons in polyamido amine dendrimers, by Deborah A. Wade
Instantiates
Publication
Note
  • Typescript
  • Vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
46929355
Dimensions
29 cm
Dimensions
unknown
Extent
xii, 143 leaves
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations
Specific material designation
remote
Label
Examination of selective quenching agents for polycyclic aromatic hydrocarbons in polyamido amine dendrimers, by Deborah A. Wade
Publication
Note
  • Typescript
  • Vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
46929355
Dimensions
29 cm
Dimensions
unknown
Extent
xii, 143 leaves
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations
Specific material designation
remote

Library Locations

    • University of Missouri Libraries DepositoryBorrow it
      2908 Lemone Blvd, Columbia, MO, 65211, US
      38.919360 -92.291620
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