Results 101 to 110 of about 23,032 (162)

Hybrid ultrasound and photoacoustic contrast agent designs combining metal phthalocyanines and PBCA microbubbles.

J Mater Chem B
Barmin RA, Moosavifar M, Zhang R, Rütten S, Thoröe-Boveleth S, Rama E, Ojha T, Kiessling F, Lammers T, Pallares RM.   +9 more
europepmc   +1 more source

From electron spin to relaxivity: a multidisciplinary perspective on first-row transition metal-based MRI probes. [PDF]

Chem Sci
Salvadori E, Lagostina V, Ricci M, Carniato F, Botta M, Platas-Iglesias C, Chiesa M.   +6 more
europepmc   +1 more source

Surface modification and nanodelivery of hypocrellin-based photosensitizers: photophysical optimization and biomedical applications. [PDF]

J Nanobiotechnology
Wang X, Yu X, Huang Y, Zhao Z, Jiao H, He X, Yin W.   +6 more
europepmc   +1 more source

Research Progress on Nano-Drug Delivery Systems for Photothermal Cancer Therapy. [PDF]

Int J Nanomedicine
Li T, Xiao D, Yin Y, Hu L.
europepmc   +1 more source

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Thermal stability of the asphaltene/kerogen vanadyl porphyrins

Organic Geochemistry, 1996
Abstract Thermal stability of vanadyl porphyrins incorporated into the asphaltene/kerogen structures of the Dead Sea asphalt “float”, the La Luna Mara limestone and the Serpiano marl was studied by electron spin resonance (ESR). Comparative studies were also made on alkyl vanadyl porphyrins such as deoxophylloerythroetioporphyrins and (extracted and ...
Goran Nikolic, Pavle I Premović
exaly   +2 more sources

Electrochemical studies of tetraphenylporphyrin and vanadyl porphyrin

Science in China Series B: Chemistry, 1997
The electrochemical reductions and oxidations of tetraphenylporphyrin (TPP) and vanadyl porphyrin (TPP-VO) were investigated in dimethylformamide at platinum, glass carbon and microdisk electrodes. A new electrode reaction mechanism of TPP and TPP-VO is proposed. The kinetic parameters have also been determined.
Qiankun Zhuang, Xiaoxia Gao
exaly   +2 more sources

Estimation of vanadyl porphyrin concentration in sedimentary kerogens and asphaltenes

Fuel, 2000
We describe a new, rapid method for determining the concentration of vanadyl porphyrins (VO2+-P) associated with the kerogen of bituminous sedimentary rocks using electron spin resonance (ESR). The method is simple, straightforward and inexpensive. Several concentrations of a vanadyl (VO2+) standard dissolved in glycerol-lignite mixture were prepared ...
N D Nikolic
exaly   +4 more sources

Vanadyl porphyrins in sedimentary kerogens/asphaltenes: Estimation of the concentration

, 1999
A new, rapid method for determining the concentration of vanadyl porphyrins (VO2+-P) associated with the kerogen of bituminous sedimentary rocks, using electron spin resonance (ESR) is described. The method is simple, straightforward and inexpensive. Several concentrations of a vanadyl (VO2+) standard dissolved in glycerol/lignite mixture were prepared.
Premović, Pavle I., Allard, Thierry, Nikolić, Nikola D., Tonsa, Ivana R., Pavlović, Mirjana S.   +4 more
core   +8 more sources

Are vanadyl porphyrins products of asphaltene/kerogen thermal breakdown?

Fuel, 1997
The idea was examined that during early stages of thermal maturation of source rocks or petroleums, the release of bound vanadyl (VO2+) porphyrins (P) from the immature asphaltenes or kerogen could contribute to an increase in extractable VO2+-P. To simulate such a change in the laboratory, the Dead Sea ‘floating’ asphalt and total organic (bitumen ...
Pavle I Premović
exaly   +2 more sources