The J-1700 Circular Dichroism Spectrophotometer was specifically designed for more demanding near-infrared CD applications. In addition to the enhanced far-UV capabilities, researchers probing the chiral activity of molecules in the NIR spectral region now have the ability to obtain data at wavelengths up to 2,500 nm. The InGaAs detector has a wavelength range from 900 – 2,500 nm, while the PMT ranges from 163 – 960 nm. The automatic detector interchange allows researchers to obtain both far-UV and NIR measurements without having to manually switch detectors. The addition of a grating monochromator to the double-prism monochromator setup provides low stray light and high light intensity, generating CD signals with high S/N performance throughout a large spectral range.
NIR-CD applications vary from conformational and chirality studies of metal coordination complexes to tuning the chiral properties of nanomaterials. Additionally, Magnetic Circular Dichroism (MCD) can be used in conjunction with NIR-CD to probe a chromophore’s electronic structure as well as to induce chirality in compounds.
Specifications
| Wavelength Range | RMS noise at 200 nm | Stray Light | Scan Speed | Wavelength Accuracy | Temperature Control | Cuvette Pathlengths | Detector |
|---|---|---|---|---|---|---|---|
| 163 to 2500 nm | 0.007 mdeg | <0.0003% | up to 10,000 | ± 0.1 nm | -40 to 130°C with peltier cell holder | 0.01 – 100 mm | PMT InGaAs detectors |
