title: Lifetime-Based Oxygen Sensing Properties of palladium(II) and platinum(II) meso-tetrakis(4-phenylethynyl)phenylporphyrin.
abstract: High oxygen permeable [poly(TMSP)] nanofibers incorporating porphyrin macrocycle as luminescence indicators were prepared by electrospinning technique. The porphyrins involves were modified by i) introducing phenylacetylide substituents on the para position of the phenyl moieties and ii) varying the metal centers [Pt(II) or Pd(II)] of the meso-tetrakisphenylporphyrins. A set of nanofibers; (Pt-TPP)NF, (Pd-TPP)NF, (Pt-TPA)NF and (Pd-TPA)NF were obtained to study their structure-activity relationship toward oxygen. The lifetime-based technique was privileged to take advantage of their long-lived phosphorescent properties. A two-fold enhancement was observed for (Pt-TPA)NF and (Pd-TPA)NF compared to (Pt-TPP)NF and (Pd-TPP)NF demonstrating the positive effect of the phenylacetylide moieties on the lifetime. Also, Silver nanoparticles were included in nanofibers to investigate their influence on lifetime-based oxygen sensitivity, showing that the presence of AgNPs only affects (Pd-TPA)NF.
authors.affiliation: Faculty of Science, Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey.
authors.forename: Emel
authors.initials: E
authors.lastname: Önal
authors.affiliation: Department of Physical Chemistry, Institute of Chemistry, University of Potsdam, 14476, Potsdam, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Saß
authors.affiliation: Department of Physical Chemistry, Institute of Chemistry, University of Potsdam, 14476, Potsdam, Germany.
authors.forename: Jeanne
authors.initials: J
authors.lastname: Hurpin
authors.affiliation: Faculty of Science, Department of Chemistry, Dokuz Eylul University, 35160, Buca, Izmir, Turkey.
authors.forename: Kadriye
authors.initials: K
authors.lastname: Ertekin
authors.affiliation: Faculty of Science, Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey.
authors.forename: Sevinc Zehra
authors.initials: SZ
authors.lastname: Topal
authors.affiliation: Department of Physical Chemistry, Institute of Chemistry, University of Potsdam, 14476, Potsdam, Germany. kumke@uni-potsdam.de.
authors.forename: Michael U
authors.initials: MU
authors.lastname: Kumke
authors.affiliation: Faculty of Science, Department of Chemistry, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey. chirel@gtu.edu.tr.
authors.forename: Catherine
authors.identifier: http://orcid.org/0000-0002-6297-5650
authors.initials: C
authors.lastname: Hirel
keywords: Nanofibers; Oxygen sensing; Phenylacetylide; Phosphorescence lifetime; Poly(trimethylsilylpropyne) matrix; meso-tetrakisphenylporphyrins