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Photochemical hole-burning spectroscopy

Photochemical hole burning spectroscopy is applied to estimate the low-temperature relaxation properties of polymers. Methacrylate polymers, polyethylene derivatives, and polymers with aromatic groups were studied. Both slight and large changes of microenvironments around doped dye molecules are detected by temperature cycling experiment. Relaxation behavior of the polymers is discussed in relation to their diemical structures. The low-energy excitation mode of each polymer is also estimated and... [Pg.173]

Reinot, T., Hayes, J.M., and SmaU, G.J., Fundamentals on non-photochemical hole burning spectroscopy and its apphcations to complex systems. Photon. Sci. News, 6,83, 2000. [Pg.2363]

Hole burning The photohleaching of a feature, normally a narrow range, within an inhomogeneous broader absorption or emission band. The holes are produced by the disappearance of resonantly excited molecules as a result of photophysical or photochemical processes. The resulting spectroscopic technique is site-selection spectroscopy. [Pg.317]

In previous work it has been shown that the width of the zero-phonon hole (ZPH) in the photochemical hole burned spectrum of the P-band can be used to determine the lifetime of P from its total zero-point level which, incidentally, is a determination not possible by ultra-fast spectroscopy. [Pg.176]

See other pages where Photochemical hole-burning spectroscopy is mentioned: [Pg.28]    [Pg.143]    [Pg.391]    [Pg.404]    [Pg.416]    [Pg.508]    [Pg.24]    [Pg.188]    [Pg.18]    [Pg.28]    [Pg.28]    [Pg.26]    [Pg.180]    [Pg.453]    [Pg.592]    [Pg.117]    [Pg.246]    [Pg.238]    [Pg.129]    [Pg.826]    [Pg.833]    [Pg.28]   
See also in sourсe #XX -- [ Pg.235 ]



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