Modern Molecular PhotochemistryBenjamin/Cummings Publishing Company, 1978 - 628 páginas Inleiding tot de studie van organische fotochemische reacties |
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Página 190
... example , ( Table 6.4 ) the lifetimes of naphthalene triplets increase from ~ 2 seconds to ~ ~ 20 sec upon substitution of C - H for C - D and the lifetime of acetone triplets increase from 0.56 ms to 1.7 ms upon substitution of C - H ...
... example , ( Table 6.4 ) the lifetimes of naphthalene triplets increase from ~ 2 seconds to ~ ~ 20 sec upon substitution of C - H for C - D and the lifetime of acetone triplets increase from 0.56 ms to 1.7 ms upon substitution of C - H ...
Página 192
... example is given by naphthalene and its halo derivatives . Both k and k , are 10 sec1 for naphthalene . Substitution of F for H has relatively little effect on the emission efficiencies or rate constants of fluoro - naphthalene relative ...
... example is given by naphthalene and its halo derivatives . Both k and k , are 10 sec1 for naphthalene . Substitution of F for H has relatively little effect on the emission efficiencies or rate constants of fluoro - naphthalene relative ...
Página 325
... example , the rate constant for energy transfer from benzene singlets ( E , ~ 110 kcal / mole ) to azo singlets is considerably smaller than that for transfer from aromatic hydrocarbon singlets whose energies are less than 90 kcal ...
... example , the rate constant for energy transfer from benzene singlets ( E , ~ 110 kcal / mole ) to azo singlets is considerably smaller than that for transfer from aromatic hydrocarbon singlets whose energies are less than 90 kcal ...
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1 | 10 |
Electronic Orbitals Configurations and States | 17 |
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absorption acceptor acetone aromatic benzene benzophenone bimolecular bond carbonyl Chem chemical CIDNP collision compounds configuration conrotatory correlation diagram corresponds cyclic cycloaddition Dewar benzene dipole diradical donor efficiency electrocyclic electrocyclic reactions electron spin electronically excited emission energy transfer ethylene example excimer exciplex experimental Figure fluid solution fluorescence formation Franck-Condon hydrogen abstraction intermediate internal conversion intersystem crossing intramolecular jump k₁ kcal/mole ketones lifetime magnetic field mechanism molecular molecule naphthalene nuclear geometry nuclear motion observed occur organic molecules oscillator oxetane oxygen pathway Ph Ph phosphorescence photochemical photochemistry photocycloaddition photon Photophysics photoreactions photosensitized Phys possess processes quantum yield quencher quenching radiationless transitions radiative radical pair rate constant reactant reaction reactive rearrangement representative point result ring S₁ S₁(n S₂ sec¯¹ sec¹ sensitization singlet solvent spectroscopic spectrum spin-orbit coupling structure symmetry T₁ temperature triplet triplet-triplet Turro undergo vibrational x-cleavage Zero Order zwitterionic