Self-Assembled Semiconducting Polymer Quantum Boxes.
ROCHESTER UNIV NY DEPT OF CHEMICAL ENGINEERING
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Ultrasmall semiconducting polymer quantum boxes having three-dimensional confinement volumes of 1-2 nm to the 3d power are prepared by self-organization of blends of an ABA block conjugated copolymer with its component homopolymer A. Optical experiments evidence quantum confinement effects on excitons in the novel low dimensional semiconductors, including observation of new discrete optical transitions in photoluminescence excitation spectra at room temperature, enhanced luminescence, and exceptional temperature and electric field stability of the quasi zero-dimensional excitons. These results provide the first evidence of quantum confinement effects in semiconducting polymers and a general approach to preparing organic semiconductor quantum boxes which have potential applications in molecular and conventional optoelectronic and photonic devices.
- Polymer Chemistry
- Physical Chemistry
- Atomic and Molecular Physics and Spectroscopy
- Quantum Theory and Relativity