Results 31 to 40 of about 70,821 (371)

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

, 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, Hernández, Laura, Ibarra, Luis Exequiel, Lorente, Carolina, Macor, Lorena Paola, Palacios, Rodrigo Emiliano, Ponzio, Rodrigo Andrés, Spada, Ramiro Martín   +7 more
core   +2 more sources

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

, 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., Aylott, J. W., Beeby, A., Boyle, R. W., Brown, R. A., Chauhan, V. M., Giuntini, F., MacRobert, A. J., Rosser, G. A.   +8 more
core   +1 more source

A Highly Sensitive “on-off” Time-Resolved Phosphorescence Sensor Based on Aptamer Functionalized Magnetite Nanoparticles for Cadmium Detection in Food Samples

Foods, 2020
Cadmium contamination is a severe threat to food safety. Therefore, the development of sensitive and selective cadmium detection strategies is urgently required. The elimination of background autofluorescence generated from the food matrix is critical to
Bin Lai, Ruiying Wang, Xiaoting Yu, Haitao Wang, Zhouping Wang, Mingqian Tan   +5 more
doaj   +1 more source

Near-IR Phosphorescence of Iridium(III) Corroles at Ambient Temperature [PDF]

, 2010
The photophysical properties of Ir(III) corroles differ from those of phosphorescent porphyrin complexes, cyclometalated and polyimine Ir(III) compounds, and other luminescent metallocorroles.
Durrell, Alec C., Gray, Harry B., Gross, Zeev, Palmer, Joshua H., Winkler, Jay R.   +4 more
core   +2 more sources

Induction of long-lived room temperature phosphorescence of carbon dots by water in hydrogen-bonded matrices

Nature Communications, 2018
A long phosphorescence lifetime is desirable for imaging and detection, however, phosphorescence is often quenched in aqueous environments limiting applications. Here, Li et al.
Qijun Li, Ming Zhou, Mingyang Yang, Qingfeng Yang, Zhixun Zhang, Jing Shi   +5 more
doaj   +1 more source

Structure of the Cytoplasmic Loop between Putative Helices II and III of the Mannitol Permease of Escherichia coli: A Tryptophan and 5-Fluorotryptophan Spectroscopy Study [PDF]

, 2008
In this work, four single tryptophan (Trp) mutants of the dimeric mannitol transporter of Escherichia coli, EIImtl, are characterized using Trp and 5-fluoroTrp (5-FTrp) fluorescence spectroscopy.
Broos J., Broos J., Broos J., Broos J., Broos J., Callis P. R., Chen Y., Cioni P., Eftink M. R., Galley W. C., Gonnelli M., Gonnelli M., Koning R. I., Lakowicz J. R., Legler P. M., Lengeler J. W., Liu T. Q., Meech S. R., Nguyen T. X., Robillard G. T., Robillard G. T., Ross J. B. A., Strambini G. B., Sugiyama J. E., Swaving Dijkstra D., van Montfort B. A., van Montfort R. L. M., Veldhuis G., Veldhuis G., Veldhuis G., Vervoort E. B., Vos E. P., Winkler G. R.   +32 more
core   +3 more sources

Manipulating intermolecular interactions for ultralong organic phosphorescence

Aggregate, 2023
Ultralong organic phosphorescence (UOP) materials have received considerable attention in the field of organic optoelectronics due to their long lifetime, high exciton utilization, large Stokes shift, and so on.
Suzhi Cai, Xiaokang Yao, Huili Ma, Huifang Shi, Zhongfu An   +4 more
semanticscholar   +1 more source

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

, 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, Besenyei, Gábor, Bitter, István, Faigl, Ferenc, Grün, Alajos, Kubinyi, Miklós, Kunsági-Máté, Éva, Párkányi, László, Szalontai, Gábor   +8 more
core   +1 more source

Biophosphorescence in fluorescent millipedes (Diplopoda: Xystodesmidae) and its relationships with bioluminescence

Scientific Reports, 2023
Three types of luminescence have been reported in living organisms: bioluminescence (BL), ultraweak chemiluminescence and biofluorescence (FL). In millipedes, both BL and FL have been reported in Motyxia sequoiae and related Xystodesmidae species ...
Vadim R. Viviani
doaj   +1 more source

Cerebral tissue pO2 response to stimulation is preserved with age in awake mice [PDF]

, 2019
Published in final edited form as: Neurosci Lett. 2019 April 23; 699: 160–166. doi:10.1016/j.neulet.2019.02.007.Compromised oxygen supply to cerebral tissue could be an important mechanism contributing to age-related cognition decline. We recently showed
Boas, David, Bélanger, Samuel, Kakkar, Ashok, Lesage, Frédéric, Lu, Xuecong, Moeini, Mohammad, Picard, Frédéric   +6 more
core   +1 more source