Photophysical Properties of Hemicyanine Dyes in Zeolite Film Grown on Glass Plate

Composites of plaster of Paris (PP) and hydroxylapatite (HA) particles are being applied for the surgical reconstruction of craniofacial bone defects and for cosmetic surgery. Two types of HA particles are being employed, the dense sintered ceramic (DHA) and the porous, coralline hydroxylapatite (PHA) particles. Excess water is expressed out of the moistened HA/PP mixture prior to implantation and setting by pressing it in a non-tapered syringe against a glass plate. This results in implants with faster setting times and greater mechanical strengths. It was therefore of interest to compare samples of the compressed versus noncompressed mixtures to see whether or not any changes in their microstructure after setting could be related to these different properties.USG Medical Grade Calcium Sulfate Hemihydrate (which has the lowest mortar consistency of any known plaster) was mixed with an equal weight of Interpore 200 particles (a commercial form of PHA). After moistening with a minimum amount of water, disc-shaped noncompressed samples were made by filling small holes (0.339 in. diameter x 0.053 in. deep) in polypropylene molds with a microspatula.

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PHOTOACOUSTIC MEASUREMENT OF PHOTOPHYSICAL PROPERTIES OF PHOTOSYNTHETIC PIGMENTS : PORPHYRINS AND CHLOROPHYLLS

Le Journal de Physique Colloques ◽

10.1051/jphyscol:1983657 ◽

1983 ◽

Vol 44 (C6) ◽

pp. C6-351-C6-353 ◽

Cited By ~ 1

Author(s):

T. A. Moore ◽

D. Benin ◽

R. Tom

Keyword(s):

Photosynthetic Pigments ◽

Photophysical Properties ◽

Photoacoustic Measurement

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Crack divergence phenomena in tempered glass

Strength Fracture and Complexity ◽

10.3233/sfc-204002 ◽

2020 ◽

Vol 13 (3) ◽

pp. 115-129

Author(s):

Shin’ichi Aratani

Keyword(s):

Optimal Design ◽

High Speed ◽

Glass Plate ◽

Acute Angle ◽

Divergence Angle ◽

High Speed Photography ◽

Tempered Glass ◽

Thick Glass

High speed photography using the Cranz-Schardin camera was performed to study the crack divergence and divergence angle in thermally tempered glass. A tempered 3.5 mm thick glass plate was used as a specimen. It was shown that two types of bifurcation and branching existed as the crack divergence. The divergence angle was smaller than the value calculated from the principle of optimal design and showed an acute angle.

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Photophysical Properties of Coumarin-30 Dye in Aprotic and Protic Solvents of Varying Polarities

Photochemistry and Photobiology ◽

10.1562/2004-03-19-ra-119 ◽

2004 ◽

Author(s):

H. Pal ◽

Sadasivam Senthilkumar ◽

Sukhendu Nath

Keyword(s):

Photophysical Properties ◽

Protic Solvents

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Solvent Dependence of Structural Dynamics and Spin-flip Processes in 3,4,5-tri(9H-carbazole-9-yl)benzonitrile (ortho-3CzBN)

10.26434/chemrxiv.11798568.v2 ◽

2020 ◽

Author(s):

Masaki Saigo ◽

Kiyoshi Miyata ◽

Hajime Nakanotani ◽

Chihaya Adachi ◽

Ken Onda

Keyword(s):

Dft Calculations ◽

Excited States ◽

Structural Changes ◽

Photophysical Properties ◽

Delayed Fluorescence ◽

Time Resolved ◽

Thermally Activated Delayed Fluorescence ◽

Thermally Activated ◽

Solvent Dependence ◽

Acetonitrile Solutions

We have investigated the solvent-dependence of structural changes along with intersystem crossing of a thermally activated delayed fluorescence (TADF) molecule, 3,4,5-tri(9H-carbazole-9-yl)benzonitrile (o-3CzBN), in toluene, tetrahydrofuran, and acetonitrile solutions using time-resolved infrared (TR-IR) spectroscopy and DFT calculations. We found that the geometries of the S1 and T1 states are very similar in all solvents though the photophysical properties mostly depend on the solvent. In addition, the time-dependent DFT calculations based on these geometries suggested that the thermally activated delayed fluorescence process of o-3CzBN is governed more by the higher-lying excited states than by the structural changes in the excited states.<br>

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