Near-infrared light

Frei H. Chemistry with Red and Near Infrared Light Chimia 1991 45 175 190... 

Principle Optical Coherent Microscopy, using femtocorrelated infrared radiation and interference recording of near-infrared light backscattered from the tissue, allows us to see the internal structure in biological objects with high resolution. 

E. Gratton, V. Toronov, U. Wolf, M. Wolf, and A. Webb. Measurement of brain activity by near-infrared light. Journal of Biological Optics, 10(1) 011008-1-011008-13, 2005. 

E. Okada, M. Firbank, M. Schweiger, S. R. Arridge, M. Cope, and D. T. Delpy. Theoretical and experimental investigation of near infrared light propagation in a model of the adult head. Applied Optics, 36 21-31, 1997. 

G. Strangman, D. A. Boas, and J. P. Sutton. Non-invasive neuroimaging using near-infrared light. Biological Psychiatry, 52 679-693, 2002. 

Shen, J. Zhu, Y. Yang, X. Zong, ]. Zhang, J. Li, C., One-pot Hydrothermal Synthesis of Graphene Quantum Dots Surface-passivated by Polyethylene Glycol and Their Photoelectric Conversion under Near-infrared Light. New). Chem. 2012,36 97-101. 

The reduction of ring IV in chlorophylls a or b changes the optical absorption spectrum of the molecule dramatically. Whereas the long-wavelength absorption band of a cytochrome is relatively weak (see fig. 14.4), chlorophyll a has an intense absorption band at 676 nm (fig. 14.5). Chlorophyll b has a similar band at 642 nm. Bacteriochlorophylls a and b have strong absorption bands in the region of 770 nm (see fig. 15.5). The chlorophylls thus absorb red or near-infrared light very well. 

Typical OCT systems provide a axial resolution of around 10 pm, ultra-high resolution is of the order of 1 pm. OCT systems typically use near infrared light with penetration depths in soft tissue of the order of a few millimetres. The mode of contrast in OCT is based on boundaries between zone of differences in refractive index within a specimen specifically, layers of different types of tissue can show up prominently on OCT images. Since the mid-1990s OCT has been suggested to be promising for real-time optical biopsy [42, 43], State-of-the-art probe systems have dimensions of a few millimetres and can be readily used at endoscopy. 

Also the infrared microspectroscopy (IR) is a vibrational spectroscopy, but it presents some differences with respect to Raman spectroscopy and also provides different information. In infrared spectroscopy the sample is radiated with infrared light, whereas in Raman spectroscopy a monochromatic visible or near infrared light is used. In this way, the vibrational energy... 

Wu G, Mikhailovsky A, Khant HA et al (2008) Remotely triggered liposome release by near-infrared light absorption via hollow gold nanoshells. J Am Chem Soc 130 8175-8177... 

A W filament lamp is used for visible and near infrared light 1850 to 12,800 cm-1. 

Ioaninnidis, N. and Petrouleas, V. (2000) Electron paramagnetic resonance signals from S3 state of the oxygenOevolving complex. A broading radical signal induced by low temperature near-infrared light illumination, Biochemistry 39, 5246-5254. 

Xenon lamp An intense source of ultraviolet, visible and near-infrared light produced by electrical discharge in xenon under high pressure. 

Polymerizable polycyclic perfluoromonomers, (111), prepared by Sumida [2] were suitable as resist components having high transparency in the ultraviolet region and near-infrared light region. 

Kang, T.S., Harrison, B.S., Bouguettaya, M., et al. (2003) Near-infrared light-emitting diodes (LEDs) based on poly(phenylene)/Yb-tris(P-diketonate) complexes. At/vanceti Functional Materials, 13, 205-210. 

Hebbink, G.A., Klink, S.I., OudeAlink, P.G.B., and van Veggel, F.C.J.M. (2001) Visible and near-infrared light emitting calix[4]arene-based ternary lanthanide complexes. Inorganica Chimica Acta, 317, 114. 

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