Parallel 12-Position LED Photoreactor

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Application Note 33: Accelerating Metal-mediated Photodecarboxylative Arylation Reactions.

Designed to run small scale batch photochemical reactions in parallel with precise temperature control, SOLSTICE is a 12-position reactor tube holder that fits onto a standard (135mm dia. top-plate) magnetic stirrer. It is ideal for catalyst screening, optimisation of reaction conditions and for preparing small focused compound arrays.

Easy to set up, tube reactors are fitted with septa and can be inerted and pre-loaded with reagent solutions or loaded/degassed in situ.

The individual tube reactors (12 x 8ml max.) are magnetically stirred and their temperatures can be conveniently controlled by connecting to an external thermoregulating recirculator. For reactions close to room temperature, a cold (or mixed cold/hot) water supply provides an effective low-cost alternative. An internal temperature probe accurately measures reaction temperatures.

Optional inserts are available to create thin films under vortex stirring conditions to maximise light absorption. Recommended reaction volumes are 0.5 - 5ml per tube.

SOLSTICE uses the Uniqsis BOREALIS LED light source. Standard options are 365nm, 385nm, 405nm, 420nm, 455nm or 525nm (with other wavelengths are available on request).

BOREALIS LED lamps are available in both 180W and 120W versions. The former is driven by a digital power supply unit that can be controlled remotely and displays both the internal reactor and LED backplate temperatures. The more compact 120W PSU (shown opposite) is designed for standalone operation and, although lacking a digital display interface, LED intensity can be adjusted using a rotary control knob.

Locating pins ensure that the LED lamp unit can only be fitted in one position. This in combination with the symmetrical design ensures that all tube reactors are subject to an identical photon flux thereby allowing a direct comparison of individual tube reactors.

Whilst limited scale-up can be achieved by scaling out across a number of tubes, a version with larger individual  tube reactors (12 x 20ml) - SOLSTICE MAXI - is also available. Alternatively, the BOREALIS FLOW photoreactor, based upon the Uniqsis COLD COIL affords continuous flow-through processing.

Features and Benefits:


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