Picture Competition 2013

Ranking of Pictures

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Picture 18

Picture by Kamalneet Kaur
Initiation of crystallization of 4,6-dimethyl-2-chloropyrimidine, a versatile substrate in heterocyclic synthesis.

Picture by Krupal Jethava

The Beauty of Crystallization. The next day I said, Wow! The synthesized compound had formed artistic crystals around the oval-shaped magnetic stirrer bar. Amazing!

Picture by Mareen Müller

Colloidal Concourse.

Scanning electron microscope image of silica-core/poly(n-isopropylacrylamid)-shell particles. The surface structuring was obtained by particle transfer using micro contact printing stamps with circular depressions. Afterwards the substrate was exposed to oxygen plasma to remove the soft polymer shell.

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Picture 21

Picture by Jeff Terry and Daniel Velazquez

Thin Film Synthesis with Pulsed Laser Deposition.

Two lasers are used to deposit thin films on substrates. A CO2 laser impinges on the substrate on the left causing the substrate to emit blackbody radiation. A 266 nm pulse hits a target and creates the visible plume on the right. Chemistry under ultra-high vacuum conditions.

Picture by Sandra Gomes Rodrigues

Filtration of a school day. The beauty of the impurities.

Picture by Kate Prescott

BZ Oscillating Reaction.

A photo of the color transition shown in the BZ oscillating reaction. The color changes between colourless and a light
brown are due to intermediate products formed in each of the reaction steps. In this particular experiment, sulfuric acid, malonic acid, potassium bromate, and manganese sulfate react together to produce bromine, carbon dioxide, and water by either a radical or non-radical process depending on the concentration of certain intermediate products.

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Picture 24

Picture by Tina Michetti


Picture by Volker Gatterdam

Light-triggered protein assembly.

Shown is a modified microscope image of a glass surface functionalized with photoactivatable ("caged") glutathione. During light irradiation inactive glutathione is photoconverted into its biological relevant form, which can be recognized by the red fluorescent labeled protein glutathione-S-transferase (GST). Total width of this image is 100 µm.

Picture by Cornelia Flender

Pressure is on!
A beautifully random arrangement of pressure regulators.

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Picture 27

Picture by Martin M. Hiller and Raphael Stolina

670.8 nm

Water drops falling down on lithium dendrites. The rest is chemistry.

Picture by Konstantina Kipreou

Chemistry rocks!


 Picture by Konstantina Kipreou

A little professor is already on duty.

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Picture 30

Picture by Konstantina Kipreou
Fluorescence in the microcosm ...

Picture by Konstantina Kipreou
Starting the experiment in the microcosm ...

A ΄΄little΄΄ help is always welcome during the experiment.

Picture by Haresh Ajani

Crystallization of Tramadol hydrochloride

The molecular weight of tramadol hydrochloride is 299.8. It is a white, bitter, crystalline and odorless powder. It is readily soluble in water and ethanol and has a pKa of 9.41. The n-octanol/water log partition coefficient (logP) is 1.35 at pH 7.

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