Linked Life Data

20096046

Source:http://linkedlifedata.com/resource/pubmed/id/20096046

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-1-25
pubmed:abstractText
Pulsed-laser atom-probe tomography is used to compare the field-evaporation mass spectrum and spatial distribution of molecular fragments from various poly(3-alkylthiophene) films deposited on sharpened aluminium specimen carriers using two different deposition methods. Films deposited via a modified solution-cast methodology yield small fragments with a uniform structural morphology whereas films deposited via an electrospray ionization methodology yield a wide range of fragments with a very non-uniform structural morphology. The main field-evaporated chemical species identified for both deposition types were, in order of typical relative abundance, C(2)H(5) (+), CH(3) (+), C(2)H(4) (+), followed by C(3)H(7,8) (+)/SC(+) and SCH(+). Thick electrospray depositions allowed investigation of the influence of laser-pulse energy on the analysis. Evidence is presented supporting the presence of a critical laser-pulse energy whereby changes in film morphology are signalled by the appearance of a new mass fragment at 190 Da.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Feb
pubmed:issn
1365-2818
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
237
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
155-67
pubmed:year
2010
pubmed:articleTitle
Atom probe tomography analysis of poly(3-alkylthiophene)s.
pubmed:affiliation
Imago Scientific Instruments Corporation, Madison, WI 53711, USA. tprosa@imago.com
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.