dc.contributor.author | BLAU, WERNER | en |
dc.contributor.author | SENGE, MATHIAS | en |
dc.contributor.author | WANG, JING | en |
dc.date.accessioned | 2013-07-25T11:24:18Z | |
dc.date.available | 2013-07-25T11:24:18Z | |
dc.date.issued | 2013 | en |
dc.date.submitted | 2013 | en |
dc.identifier.citation | Zawadzka M, Wang J, Blau WJ, Senge MO, Nonlinear absorption properties of 5,10-A2B2 porphyrins - correlation of molecular structure with the nonlinear responses., Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 12, 2013, 996 1007 | en |
dc.identifier.other | Y | en |
dc.description | PUBLISHED | en |
dc.description.abstract | The nonlinear absorption properties of two series of novel free base and metalated
meso
5,10-A
2
B
2
sub-
stituted porphyrins, both bearing
p
-tolyl as an A substituent and TMS-ethynyl or bromine as a B substitu-
ent, were investigated with the open Z-scan technique at 532 nm in the ns time regime. Most of the
compounds exhibited a transmission drop with increasing input
fl
uence. This behavior is desirable for
their applications in optical limiting. More complex responses: a drop in transmission followed by an
increase in transmission or an increase in transmission followed by a transmission drop, with increasing
input
fl
uence, were detected for certain compounds. All of the recorded responses were successfully
fi
tted with a four-level model with simultaneous two-photon absorption arising from the higher excited
states (consecutive one- + one- + two-photon absorption). The TMS-ethynyl group was found to be a
more e
ffi
cient
meso
substituent in optical limiting than the bromine atom. Indium, lead and zinc com-
plexes with TMS-ethynyl substituents were the strongest positive nonlinear absorbers amongst com-
pounds studied which makes them the most interesting candidates for optical limiting application. | en |
dc.description.sponsorship | This work was supported by a grant from Science Foundation
Ireland (SFI P.I. 09/IN.1/B2650). J.W. acknowledges the
financial support from the 100-Talent Program of Chinese
Academy of Sciences, the National Natural Science Foundation
of China (NSFC, No. 61178007), and Science and Technology
Commission of Shanghai Municipality (STCSM Nano Project,
No. 11nm0502400, Pujiang Talent Program 12PJ1409400). The
authors would like to thank Dr Eimear Finnigan for his help
with the manuscript | en |
dc.format.extent | 996-1007 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology | en |
dc.relation.ispartofseries | 12 | en |
dc.rights | Y | en |
dc.subject | positive nonlinear absorbers | en |
dc.subject.lcsh | positive nonlinear absorbers | en |
dc.title | Nonlinear absorption properties of 5,10-A2B2 porphyrins - correlation of molecular structure with the nonlinear responses | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/wblau | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/sengem | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/jjwang | en |
dc.identifier.rssinternalid | 85014 | en |
dc.identifier.doi | http://dx.doi.org/10.1039/C3PP25410K | en |
dc.subject.TCDTheme | Nanoscience & Materials | en |
dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
dc.contributor.sponsorGrantNumber | SFI P.I. 09/IN.1/B265 | en |
dc.identifier.uri | http://hdl.handle.net/2262/66795 | |