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flash photolysis

Ammer, Johannes
  

(2012):


	Generation of carbocations by laser flash photolysis: explorations, limitations, applications.


Dissertation, LMU München: Fakultät für Chemie und Pharmazie

Ammer, Johannes (2012): Generation of carbocations by laser flash photolysis: explorations, limitations, applications. Dissertation, LMU München: Fakultät für Chemie und Pharmazie

... Among the many photo-leaving groups, phosphines turned out to be particularly advantageous, because they combine high stability, 36 even in alcoholic and aqueous solution, with a high preference for heterolytic cleavage ...

429

Mechanisms of intracellular calcium release during hormone and neurotransmitter action investigated with flash photolysis

Mechanisms of intracellular calcium release during hormone and neurotransmitter action investigated with flash photolysis

... for photolysis of nitrophenyl derivatives are in the near ultraviolet, 300–360nm, longer than those that damage proteins or nucleic acids and in a region where cells are relatively ...for flash ...

23

Excited state studies of inorganic complexes by laser flash photolysis

Excited state studies of inorganic complexes by laser flash photolysis

... laser flash photolysis, which indicated that while donors with E t > 170 kJ mol - 1 were quenched very effectively, those with low values of ET (< 110 kJ mol- ^), such as rubrene and 6 -carotene, ...

361

Kinetic studies of C₁ and C₂ Criegee intermediates with SO₂ using laser flash photolysis coupled with photoionization mass spectrometry and time resolved UV absorption spectroscopy

Kinetic studies of C₁ and C₂ Criegee intermediates with SO₂ using laser flash photolysis coupled with photoionization mass spectrometry and time resolved UV absorption spectroscopy

... flash photolysis to generate stabilized Criegee intermediate with the reaction being monitored by both photoionization mass spectroscopy and time-resolved UV absorption ...

28

Postsynaptic actions of excitatory amino acids investigated with flash photolysis

Postsynaptic actions of excitatory amino acids investigated with flash photolysis

... sh photolysis; an in a c tiv e photolabile an alo g u e of th e n e u ro tra n s m itte r is allowed to e q u ilib ra te w ith th e p re p a ra tio n , an d a known c o n c e n tra tio n of th e n e u ro tra n s m ...

181

An investigation of the metabotropic glutamate receptor of hippocampal neurones with flash photolysis

An investigation of the metabotropic glutamate receptor of hippocampal neurones with flash photolysis

... unknown and probably different when glutamate was released extracellularly.. Caged compound is MNI L-glutamate... The termination of calcium release correlates with flux. The rate o[r] ...

215

Reaction of superoxide radicals with glycosaminoglycan chloramides: a kinetic study

Reaction of superoxide radicals with glycosaminoglycan chloramides: a kinetic study

... Laser flash photolysis has been used here to obtain, for the first time, the rate constants for the direct reaction of superoxide radicals with the chloramides of hyaluronan and ...

30

Advanced Physical Techniques in Inorganic Chemistry: Probing Small Molecule Activation

Advanced Physical Techniques in Inorganic Chemistry: Probing Small Molecule Activation

... Laser flash photolysis of free bathocuproine revealed the presence of a long-lived photogenerated intermediate, assigned to pyridinyl radical 12 based on solvent-dependent yields of 12 as well as on ...

275

Photochemical dihydrogen production using an analogue of the active site of [NiFe] hydrogenase

Photochemical dihydrogen production using an analogue of the active site of [NiFe] hydrogenase

... TRIR kinetic traces for the decay of the 3MLCT excited state [ReClCO3bpy]* blue squares and the growth and decay of [ReClCO3bpy]•− red triangles, following flash photolysis 355 nm of 1 0[r] ...

12

Measurement of OH reactivity by laser flash photolysis coupled with laser-induced fluorescence spectroscopy

Measurement of OH reactivity by laser flash photolysis coupled with laser-induced fluorescence spectroscopy

... Abstract. OH reactivity (k OH 0 ) is the total pseudo-first-order loss rate coefficient describing the removal of OH radicals to all sinks in the atmosphere, and is the inverse of the chem- ical lifetime of OH. ...

18

One electron oxidation and reduction of glycosaminoglycan chloramides: a kinetic study

One electron oxidation and reduction of glycosaminoglycan chloramides: a kinetic study

... heparin preparations, 80 % heparin chloramide, 20 % heparin. Taurine monochloramine (TauCl) solutions were prepared by the addition of equal concentrations of taurine and hypochlorite at pH 7.4. The reaction was complete ...

39

PINK1 Associated Parkinson's Disease Is Caused by Neuronal Vulnerability to Calcium Induced Cell Death

PINK1 Associated Parkinson's Disease Is Caused by Neuronal Vulnerability to Calcium Induced Cell Death

... Mitochondrial Calcium Capacity Is Reduced in PINK1 KD/KO Neurons A–D Flash photolysis of permeabilized neurons loaded with Sodium Green and Rhod-5n demonstrated a flash-induced increase [r] ...

13

REVIEW ON FLASH CHROMATOGRAPHY

REVIEW ON FLASH CHROMATOGRAPHY

... In previous days, Column chromatography was used in many laboratories for preparative purposes as well as for reaction control in organic synthesis. Column chromatography is an extremely time consuming stage in any lab ...

5

Study Of Flash Floods

Study Of Flash Floods

... conditions. Flash floods occur with little or no warning and can reach full peak in only a few ...minutes. Flash floods occur within six hrs of a rain event, or after a dam failure or, following a sudden ...

7

A REVIEW ON A FLASH CHROMATOGRAPHY

A REVIEW ON A FLASH CHROMATOGRAPHY

... of Flash Chromatographic System The basic prerequisite for successful separations is the choice of the proper ...for flash chromatography; larger particles (lower mesh values) are used for gravity ...in ...

5

Ultrafast vibrational spectroscopic Studies on the photoionization of the α Tocopherol analogue Trolox C

Ultrafast vibrational spectroscopic Studies on the photoionization of the α Tocopherol analogue Trolox C

... The picosecond TA and FSRS studies described above clearly show the evolution of radical states of Trolox C. In addition the TA spectra from photoexcitation of Trolox C in aqueous solution contain a short-lived broad ...

33

Photochemically induced reactions between ozone and halogenated species: A matrix isolation study

Photochemically induced reactions between ozone and halogenated species: A matrix isolation study

... Hence, photolysis with radiation o f wavelengths > 350 nm caused new bands to form at the expense o f bands o f the complex; these new bands are attributed to vq = o and vc=o in different carbonyl*•-Lewis acid ...

218

Design of Flash Controller for Single Level Cell NAND Flash Memory

Design of Flash Controller for Single Level Cell NAND Flash Memory

... NAND flash controller was presented to control operations on flash ...of flash controller is control signal ...and flash controller can be effectively ...

6

CH2OO Criegee biradical yields following photolysis of CH2I2 in O2.

CH2OO Criegee biradical yields following photolysis of CH2I2 in O2.

... the slow loss of HCHO from the detection region via diffusion. f is therefore related to the yield of the Criegee, eqn (2), as we demonstrate below. Again, in experiments conducted with a photolysis wavelength of ...

7

Evaluating photolysis and sorption of antibiotics in both laboratory and environmental settings

Evaluating photolysis and sorption of antibiotics in both laboratory and environmental settings

... natural photolysis and absorption of antibiotics to sediments as they move downstream of WWTP ...indirect photolysis (Lunestad, Samuelsen et ...from photolysis may retain antimicrobial activity and ...

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