LED Light Sources:
The EvoluChem™ LED spotlights are designed specifically for photo-catalytic chemistry applications. They fit the photoredox box and they are designed to irradiate all samples with maximum efficiency. The LED chips are selected for specific wavelengths 365 nm, 380 nm, 405 nm, 425 nm, 450 nm, 475 nm, 525 nm, 650 nm, 740nm, 6200K white.
- Power Consumption 18W or 30W Max
- Input Voltage 100-240 VAC
- Beam Angle 25°
- Wavelength Options 365 nm, 380 nm, 405 nm, 450 mm, 475 nm, 525 nm, 650 nm, 740 nm, 6200K white LED LG, EPILED, Cree XPE or XTE (9X)
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EvoluChem LED Light Options
|Product Name||Wavelength||LED||Relative Irradiance*||Part Number|
|365PF||365 nm||LG/CREE||9 mW/cm2||HCK1012-01-011|
|380PF||380 nm||LG||8 mW/cm2||HCK1012-01-013|
|405PF||405 nm||LG||28 mW/cm2||HCK1012-01-010|
|425PF||425 nm||EPILED||33 mW/cm2||HCK1012-01-012|
|450PF||450 nm||CREE XPE||34 mW/cm2||HCK1012-01-002|
|475PF||475 nm||CREE XPE||23 mW/cm2||HCK1012-01-003|
|525PF||525 nm||CREE XPE||10 mW/cm2||HCK1012-01-004|
|650PF||650 nm||EPILED||20 mW/cm2||HCK1012-01-014|
|740PF||740 nm||EPILED||20 mW/cm2||HCK1012-01-015|
|6200PF||Cold White||CREE XTE||29 mW/cm2||HCK1012-01-005|
|450DX||450 nm||CREE XPE||55 mW/cm2||HCK1012-01-008|
|365DX||365 nm||LG||25 mW/cm2||HCK1012-01-006|
*Average relative irradiance is measured in the photoredox box.
The Advantage of A Focused Light Beam
EvoluChem™ LEDs are designed to maximize the amount of light directed towards the sample. As shown at left, the EvoluChem 450PF LED (18W) delivers better light efficiency than the Kessil 150N (34W) due in part to its 25° light beam angle.
In fact, with a more focused beam, Evoluchem LEDs consistently deliver more irradiance than other brands… even though our LEDs require less power.
EvoluChem 450 nm vs Kessil Royal Blue
In duplicate in a 4-ml vial equipped with a teflon septa and 2×7 mm stir bar, were weighed 4-bromoacetophenone (4.95 mg, 25 µmol) and potassium benzyltrifluoroborate (4.50 mg, 25 µmol, 1 equiv.). To this vial was added a 1.0 ml solution in DMA containing NiCl2-dme (1.1 mg, 5 µmol, 20 mol %), dtbbpy (1.3 mg, 5 µmol, 20 mol %) and Ir(dF-CF3-ppy)2(dtbpy) (1.12 mg, 1 µmol, 4 mol %) followed by addition of 2,6-lutidine (17.5 µl, 150 µmol, 6 equiv.) . The solution was sparged with nitrogen via submerged needle for 5 minutes and vial was placed in EvoluChem photoreactor with blue Kessil 34W LED or with a EvoluChem LED 18W 450-455 nm. Reaction time course was monitored at 0, 5, 15, 45, 120, 240, and 360 minutes.