Generation of narrow‐band tunable radiation in the 1200 Å spectral region

1982 ◽  
Author(s):  
F. S. Tomkins ◽  
Rita Mahan
Keyword(s):  
Spectral Region ◽  
Narrow Band

scholarly journals Bioconjugatable, PEGylated hydroporphyrins for photochemistry and photomedicine. Narrow-band, red-emitting chlorins

2016 ◽  
Vol 40 (9) ◽  
pp. 7721-7740 ◽  
Author(s):  
Mengran Liu ◽  
Chih-Yuan Chen ◽  
Amit Kumar Mandal ◽  
Vanampally Chandrashaker ◽  
Rosemary B. Evans-Storms ◽  
...  
Keyword(s):  
Spectral Region ◽  
Narrow Band ◽  
Fluorescence Band ◽  
Near Ultraviolet

PEGylated chlorins are soluble in water, can be excited in the near-ultraviolet, and exhibit a relatively narrow fluorescence band in the red spectral region.

Argon Matrix Infrared Spectroscopic Evidence for the Generation of Pentatetraenone by Flash Pyrolysis of Suitable Precursors

1988 ◽  
Vol 41 (2) ◽  
pp. 225 ◽  
Author(s):  
RFC Brown ◽  
KJ Coulston ◽  
FW Eastwood ◽  
MJ Irvine ◽  
ADE Pullin
Keyword(s):  
Carbon Atom ◽  
Infrared Spectra ◽  
Spectral Region ◽  
Narrow Band ◽  
Broad Band ◽  
Carbonyl Carbon Atom ◽  
Carbonyl Carbon ◽  
Argon Matrix ◽  
Spectroscopic Evidence ◽  
Argon Mixture

Five compounds were investigated as precursors for the pyrolytic generation of pentatetraenone, H2C=C=C=C=C=O. These were (1)-(4): 3- ethenylidenebicyclo [2.2.1]hept-5-ene with the following 2,2 substituents : H, COOCOCF3 (1); H, 13COOCOCF3 (1′); (COOCOCF3)2 (2); (COO)2C(CH3)(OCH3) (3); (COO)2Si(CH3)2 (4) and 5-(3′- methylenebicyclo [2.2.1]hept-5′-en-2′-ylidene)-2,2-dimethyl-1,3-dioxan-4,6-dione (5). The five precursors were pyrolysed in a stream of argon at temperatures in the range 350-725°C and the pyrolysate -argon mixture condensed on a CsI plate at c. 10 K. Infrared spectra were obtained between 4000 and 250 cm-1. All five precursors gave two strong bands in the spectral region 2070-2250 cm-1, possibly attributable to pentatetraenone. At lower pyrolytic temperatures the more intense of the two bands was a broad band centred at c. 2128 cm-1 [precursors (1)- (4)] or at c. 2094 cm-1 [precursor (5)]. At higher pyrolytic temperatures these bands were diminished in intensity and replaced by a narrow band at 2207 cm-1 for all five precursors. Bands due to the expected other products for each pyrolysis reaction to form pentatetraenone were observed. H2C413CO ( pentatetraenone substituted by 13C at the carbonyl carbon atom) was prepared by pyrolysis of precursor (1′). We assign the broad bands at c. 2128 cm-1 [precursors (1)-(4)] and at c. 2094 [precursor (5)] to incompletely pyrolysed precursor in which cyclopentadiene has been retained but decomposition in the rest of the molecule has resulted in formation of a =C=C=O group. Bands at 2207, 2068 and 1726 cm-1 we assign to v2-v4 of pentatetraenone. Corresponding bands at 2168, 2056 and 1720 cm-1 are observed in the spectrum of H2C413CO.

Narrow band X-ray emission in the water-window spectral region from a laser heated gold copper mix-Z plasma

2006 ◽  
Vol 86 (3) ◽  
pp. 519-522 ◽  
Author(s):  
J.A. Chakera ◽  
S.R. Kumbhare ◽  
P.A. Naik ◽  
P.D. Gupta
Keyword(s):  
Spectral Region ◽  
Narrow Band ◽  
X Ray ◽  
Water Window ◽  
Laser Heated

scholarly journals Blue-Infrared Narrow-Band Photometry from Objective Prism Spectra

1973 ◽  
Vol 50 ◽  
pp. 127-133
Author(s):  
A. Cassatella ◽  
P. Maffei ◽  
R. Viotti
Keyword(s):  
Spectral Region ◽  
Narrow Band ◽  
Objective Prism

A technique for narrow-band photometry in the 3600–8400 Å spectral region from objective prism spectra is briefly described and applied to the Hyades.

Narrow Band Imagery In The 8-14 Micron Spectral Region

1986 ◽  
Author(s):  
J. H. Goebel ◽  
N. Moss ◽  
M. Cohen ◽  
C. R. McCreight ◽  
F. C. Witteborn ◽  
...  
Keyword(s):  
Spectral Region ◽  
Narrow Band

scholarly journals Bioconjugatable, PEGylated hydroporphyrins for photochemistry and photomedicine. Narrow-band, near-infrared-emitting bacteriochlorins

2016 ◽  
Vol 40 (9) ◽  
pp. 7750-7767 ◽  
Author(s):  
Nuonuo Zhang ◽  
Jianbing Jiang ◽  
Mengran Liu ◽  
Masahiko Taniguchi ◽  
Amit Kumar Mandal ◽  
...  
Keyword(s):  
Spectral Region ◽  
Near Infrared ◽  
Narrow Band ◽  
Fluorescence Band

PEGylated bacteriochlorins are soluble in water, can be excited in the ultraviolet, and exhibit a narrow fluorescence band in the NIR spectral region.

scholarly journals EXTENSION OF HIGH REFLECTANCE BAND WIDTH FOR FAR INFRARED SPECTRAL REGION : (1)

2004 ◽  
Vol 1 (2) ◽  
pp. 247-252
Author(s):  
Baghdad Science Journal
Keyword(s):  
Spectral Region ◽  
Matrix Theory ◽  
Narrow Band ◽  
Far Infrared ◽  
Normal Incidence ◽  
Characteristic Matrix ◽  
Infrared Spectral ◽  
Band Pass ◽  
Reflectance Band ◽  
High Reflectance

Extension of bandwidth for high reflectance zone for the spectral region (8-14pm) was studied adapting the concept of contiguous and overlapping high reflectance stacks. Computations was carried out using the modified characteristic matrix theory restricted to near-normal incidence of light on dielectric , homogenous and isotropic symmetrical stack. Certain precautions must be taken in the choice of stacks to avoid deep —reflectance minima from developing within the extended high reflectance region. Results illustrate that the techniques of extending the high reflectance regions are applicable not only to mirrors , but also to short-and long-edge filter and to narrow band pass filters.

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