116. Absorption spectra of polycyclic hydrocarbons. Part II. Partially reduced derivatives of phenanthrene, etc.

1935 ◽  
pp. 512 ◽  
Author(s):  
F. A. Askew
Keyword(s):  
Absorption Spectra ◽  
Polycyclic Hydrocarbons ◽  
Derivatives Of

scholarly journals Epoxy derivatives of aromatic polycyclic hydrocarbons. The preparation of benz[a]anthracene 8,9-oxide and 10,11-dihydrobenz[a]anthracene 8,9-oxide and their metabolism by rat liver preparations

1971 ◽  
Vol 125 (1) ◽  
pp. 159-168 ◽  
Author(s):  
P. Sims
Keyword(s):  
Rat Liver ◽  
Reduced Glutathione ◽  
Mercapturic Acids ◽  
Polycyclic Hydrocarbons ◽  
Glutathione Conjugates ◽  
Liver Homogenates ◽  
Derivatives Of ◽  
Related Compounds

The syntheses of 10,11-dihydrobenz[a]anthracene 8,9-oxide, benz[a]anthracene 8,9-oxide and 9-hydroxybenz[a]anthracene are described, together with those of a number of related compounds. The epoxides react both chemically and enzymically with water to yield the corresponding dihydrodiols and with reduced glutathione to form glutathione conjugates, and they react chemically with N-acetylcysteine to yield the corresponding mercapturic acids. 8,9-Dihydro-8,9-dihydroxybenz[a]anthracene, formed enzymically from benz[a]anthracene 8,9-oxide, was identical with a dihydrodiol formed when benz[a]anthracene was metabolized by rat liver homogenates. Similarly 10,11-dihydrobenz[a]anthracene 8,9-oxide yielded a dihydrodiol identical with the product formed when 10,11-dihydrobenz[a]anthracene was metabolized.

Polarographic half-wave potentials and ultraviolet absorption spectra of some conjugated heteroenoid compounds

1969 ◽  
Vol 47 (21) ◽  
pp. 4076-4083 ◽  
Author(s):  
H. L. Holmes ◽  
D. J. Currie
Keyword(s):  
Absorption Spectra ◽  
Functional Groups ◽  
Ultraviolet Absorption ◽  
Half Wave ◽  
Active Methylene Compounds ◽  
Derivatives Of ◽  
Active Methylene ◽  
Hammett Relationship

The half-wave potentials of phenyl substituted derivatives for each series of conjugated heteroenoid compounds studied follow a Hammett relationship. The effect of change in the functional groups and of increase in length of the conjugated system upon half-wave potentials and ultraviolet absorption maxima is briefly discussed. Terephthalylidene derivatives of active methylene compounds function like the cinnamylidene derivatives.

Molecular Packing-Dependent Exciton and Polariton Dynamics in Anthradithiophene Organic Crystals

MRS Advances ◽  
2018 ◽  
Vol 3 (59) ◽  
pp. 3465-3470 ◽  
Author(s):  
Jonathan D B Van Schenck ◽  
Gregory Giesbers ◽  
Akash Kannegulla ◽  
Li-Jing Cheng ◽  
John E. Anthony ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Energy Absorption ◽  
Absorption Spectra ◽  
Organic Crystals ◽  
Optical Microcavities ◽  
Enhanced Absorption ◽  
Excitonic Transition ◽  
Dependent Absorption ◽  
Derivatives Of ◽  
Primary Contribution

AbstractPolarization-dependent absorption spectra of two functionalized derivatives of fluorinated anthradithiophene, diF TES-ADT and diF TDMS-ADT, were studied in the crystal phase using a Holstein-like Hamiltonian. For both molecules, the primary contribution to the lowest energy absorption was found to be the S0-S1 excitonic transition perturbed by an intermolecular coupling of 15 meV for both TES and TDMS. A secondary contribution, consistent with that from charge-transfer states, was also found. Additionally, absorption spectra were analysed when crystals were placed inside of optical microcavities formed by two metal mirrors. Cavities exhibited a primary absorption peak determined to be an enhanced absorption from the lowest-energy S0-S1 transition.

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