This observation is not consistent with an interference that derives exclusively from the contribution to background absorbance, but instead suggests a mechanism involving the reaction of bilirubin with components of the reagent system to produce a chromophore
that absorbs at or near the analytical wavelength.
The protein coils itself into the shape of a barrel, with three amino acids in the center serving as the light-emitting chromophore
(SN: 10/5/96, p.
This structure is a strong chromophore
resulting in the yellowing of urethanes.
The project attempts to investigate members of a novel and very interesting class of bioactive molecules of interest as anti-cancer agents, consisting of a light-absorber chromophore
(PS) and a cisplatin-like unit.
The use of missiles in the structure of the drug delivery system solves the problem of using chromophore
-- which is not very safe -- in the formulation of the drug.
In solar cells made from organic film, this brief timescale constrains the size of the chromophore
arrays and how far excitation energy can travel," Fleming stated.
More specifically, factors affecting the properties of SRGs are the length of repeating units of polymer chains (11), flexibility of the main chains, hydrogen bonding, the nature of chromophore
substituents and size of the chromophores
(12), solvent types, and film thickness (13).
group is an anthraquinone, methine, or azo compound.
Dragan (Institute of Macromolecular Chemistry, Romania) collects information from the literature as well as original contributions in the field of ionic (co)polymers and hybrids such as self-assembled multilayers, ionic polymers containing azobenzene chromophore
, phase separation processes, chelating ion exchangers, polymer electrolytes, functionalized solid surfaces, ionic hybrid hydrogels, and nanocomposites for polymer electrolytes.
In addition, an initial photon may excite a bond which requires a second photon absorption of a given (perhaps different) energy to scission or become a chromophore
Upon absorption of a photon by a chromophore
, an electron is promoted from the singlet ground state (SO) to an intermediate vibrational level of the excited singlet state (S1).
This exciton jumps from one chromophore
to another until it reaches a reaction center, where that energy is harnessed to build the molecules that support life.