title: Hybrid oxygen-responsive reflective Bragg grating platforms.
abstract: Oxygen responsive sensor platforms were fabricated by pin printing tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) ([Ru(dpp)(3)](2+)) doped sols onto wavelength tuned reflective Bragg gratings. In an epi-luminescence configuration, these Bragg gratings (Gr) were designed to selectively reflect the O(2) responsive [Ru(dpp)(3)](2+) emission toward the detector to enhance the detected signal magnitude. The xerogel based sensors were formed onto (i) glass (XGl), (ii) directly on top of the grating (XGrGl), or (iii) on the glass substrate opposite the grating (XGlGr). The results show that all sensors exhibit linear, statistically equivalent O(2) sensitivities, and the XGrGl platform yields up to an 8-fold increase in relative detected analytical signal (RDAS) in comparison to the control (XGl) platform.
authors.affiliation: Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA.
authors.forename: Ka Yi
authors.initials: KY
authors.lastname: Yung
authors.forename: Huina
authors.initials: H
authors.lastname: Xu
authors.forename: Ke
authors.initials: K
authors.lastname: Liu
authors.forename: Greggory J
authors.initials: GJ
authors.lastname: Martinez
authors.forename: Frank V
authors.initials: FV
authors.lastname: Bright
authors.forename: Michael R
authors.initials: MR
authors.lastname: Detty
authors.forename: Alexander N
authors.initials: AN
authors.lastname: Cartwright
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D005782:Gels / Q000737:chemistry; D005898:Glass / Q000737:chemistry; D008163:Luminescent Measurements; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010618:Phenanthrolines / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D005782:Gels; D009942:Organometallic Compounds; D010618:Phenanthrolines; C041132:tris(4,7-diphenyl-1,10-phenanthroline)ruthenium (II); D010100:Oxygen