Polarization label for measuring 3-dimensional orientation
AssigneeMassachusetts Institute of Technology
InventorsStephen Empedocles, Moungi Bawendi
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Abstract
A photoactive moiety exhibiting an anisotropic transition dipole. The moiety exhibits emission of polarized light in response to energy absorption. In a preferred embodiment, the moiety comprises a particle from the group consisting of a crystalline arrangement of photoactive molecules and a photoactive nanocrystal. The moiety may include a matrix in which photoactive objects exhibiting an anisotropic emission dipole are embedded. The moiety may be photobleached to product the anisotropy and the photoactive objects may have a one dimensional transition dipole in their natural state.
Claims11
A photoactive moiety, wherein the moiety axhibits an anisotropic transition dipole characterized by a dark axis, and wherein the moiety has been modified from its natural state to produce the anisotropy.
Dependencies are inferred from the claim text.