If chirality arises in such a way through the bonding of achiral constituents, a racemic mixture is obtained. This may lead to a reduced symmetry of the adsorbate complex or to chiral distortions of the molecule owing to its interaction with the surface. This emergence of chirality is due to the restriction of the molecules to two-dimensional space on adsorption. In addition, achiral molecules can form chiral patterns on achiral surfaces 4. For example, achiral molecules may turn chiral on adsorption on a surface, even if the latter itself is not chiral 1, 2, 3. However, chiral assemblies can also emerge from achiral constituents.
Whereas the origin of homochirality on earth is still unclear, it is now evident that many biological macromolecules are built from chiral building blocks. It offers a built-in Hg lamp wavelength calibration source and the first traceable scale calibration substance (d-10-ammonium amphorsulfonate) for photometric accuracy and repeatability tests.Chirality is ubiquitous in nature and has tremendous impact on biology, medicine, and pharmaceutical sciences. Provides simultaneous acquisition of up to four data channels including CD, absorbance, linear dichroism (LD), fluorescence, fluorescence-detected CD (FDCD), fluorescence-detected LD (FDLD) and fluorescence anisotropy.Īn integrated validation mode provides users with a list of up to nine instrument performance and calibration tests. Minimal time exposure of biological samples to the high-energy UV light, reduces the risk of sample degradation. High sensitivity and fast scan speed allows the J-1500 to measure samples quickly, increasing productivity. The vacuum-UV region below 200 nm is of critical importance for biomolecules, particularly in protein secondary structure estimation. The innovative optical system of the J-1500 permits the measurement of a CD spectrum in the vacuum-UV region down to 163 nm.
JASCO SPECTRA MANAGER CIRCULAR DICHROISM SERIES
The dual polarizing prism optical design of the J-1000 series results in stray light lower than 0.0003%, enabling the instruments to obtain high-quality CD data even under conditions with high absorbance. Contact us for a quote.Įntire instrument is designed and manufactured by JASCO including the PEM crystal to provide the best performance and reliability in the industry. The JASCO spectroscopy portfolio offers high quality, reliable instrumentation for UV-Visible-NIR, FTIR, Fluorescence, Circular Dichroism, Raman and Polarimetry.
JASCO SPECTRA MANAGER CIRCULAR DICHROISM SOFTWARE
The Dual Polarizing Prism Monochromator covers the entire region required for routine analysis of biomolecules with excellent stray-light rejection for accurate results. Enhanced vacuum UV measurement enables the measurement of a CD spectrum in the vacuum UV region can go down to 163nm which is of critical importance for biomolecules.Ī range of sampling accessories with automatic recognition include thermostatted cell holders, cell changers, temperature controllers, microsamplers, fluorescence, titration units and specific application software packages.
J-1700 CD Spectrometer is designed for demanding near-infrared CD applications such as magnetic CD and covers the wavelength range from UV, Visible and NIR up to 2500 nm. J-1500 CD Spectrometer is designed as a multipurpose, flexible system with a wide dynamic range to meet demanding CD applications with high sensitivity. It’s simple yet powerful design is suitable for research as well as an effective tool for teaching CD in academic environments. J-1100 CD Spectrometer is designed for routine, conventional CD applications in a compact package. Based on over 50 years of experience, the Jasco J-1000 series offers the highest sensitivity, with a wider spectral range from vacuum UV to NIR wavelengths. JASCO J-1000 Series of CD spectrometers provide unparalleled optical performance and versatile flexibility for advanced biomolecular characterisation and stereochemical analysis.