Results 31 to 40 of about 21,517 (199)

Conjugatable water-soluble Pt(ii) and Pd(ii) porphyrin complexes: Novel nano- and molecular probes for optical oxygen tension measurement in tissue engineering [PDF]

open access: yes, 2014
Measurement of oxygen tension in compressed collagen sheets was performed using matrix-embedded optical oxygen sensors based on platinum(II) and palladium(II) porphyrins supported on polyacrylamide nanoparticles.
Athanasiadis, A.   +8 more
core   +1 more source

Red Phosphorescence from Benzo[2,1,3]thiadiazoles at Room Temperature [PDF]

open access: yes, 2016
We describe the red phosphorescence exhibited by a class of structurally simple benzo[2,1,3]thiadiazoles at room temperature. The photophysical properties of these molecules in deoxygenated cyclohexane, including their absorption spectra, steady-state ...
Graham T. Sazama   +7 more
core   +2 more sources

Amplified singlet oxygen generation in metallated-porphyrin doped conjugated polymer nanoparticles [PDF]

open access: yes, 2018
We report on the mechanism and efficiencies of singlet oxygen O2(1Δg) generation of nanoparticles (NP) of the conjugated polymer (CP) poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) doped with platinum octaethylporphyrin (PtOEP) suspended in water.
Chesta, Carlos Alberto   +7 more
core   +2 more sources

Design of mechanical-robust phosphorescence materials through covalent click reaction

open access: yesNature Communications, 2023
It remains a great challenge to engineer materials with strong and stable interactions for the simultaneously mechanical-robust and room temperature phosphorescence-efficient materials.
Rui Tian, Shuo Gao, Kaitao Li, Chao Lu
doaj   +1 more source

Excimer formation by steric twisting in carbazole and triphenylamine-based host materials [PDF]

open access: yes, 2015
This paper presents a detailed spectroscopic investigation of luminescence properties of 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP) and N,N,N’,N’-tetraphenylbenzidine (TAD) in solutions and neat films.
Alexander Rudnick (1351473)   +7 more
core   +3 more sources

Gas phase thermometry of hot turbulent jets using laser induced phosphorescence [PDF]

open access: yes, 2013
This article is made available through the Brunel Open Access Publishing Fund. Copyright @ 2013 OSAThe temperature distributions of heated turbulent jets of air were determined using two dimensional (planar) laser induced phosphorescence.
Agrawal   +38 more
core   +1 more source

Temperature dependent persistent luminescence : evaluating the optimum working temperature [PDF]

open access: yes, 2019
Development of persistent luminescent materials has drawn continuous attention in recent years in view of their potential applications in the fields of security night-vision signage, in vivo bio-imaging and optical data storage.
De Clercq, Olivier   +2 more
core   +1 more source

Highly efficient, dual state emission from an organic semiconductor

open access: yes, 2013
We report highly efficient, simultaneous fluorescence and phosphorescence (74% yield) at room temperature from a single molecule ensemble of (BzP)PB dispersed into a polymer host. The slow phosphorescence (208 ms lifetime) is very efficient (50%) at room
Baldo, Marc A.   +5 more
core   +1 more source

A new xantphos-type ligand and its gold(I) complexes: Synthesis, structure, luminescence [PDF]

open access: yes, 2013
A novel xantphos analog diphosphine ligand, 9,9-dimethyl-4,5-bis(diphenylphosphinomethyl)-9H-xanthene (X(CP)2), with methylene groups inserted between the xanthene skeleton and the two diphenylphosphine units, has been synthesized. A two-coordinate and a
Baranyai, Péter   +8 more
core   +1 more source

Two‐Photon Excited Near‐Infrared Phosphorescence Based on Secondary Supramolecular Confinement

open access: yesAdvanced Science, 2022
Organic phosphorescence materials have received wide attention in bioimaging for bio‐low toxicity and large Stokes. Herein, a design strategy to achieve near‐infrared (NIR) excitation and emission of organic room‐temperature phosphorescence through two ...
Xin‐Kun Ma   +4 more
doaj   +1 more source

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