- Supramolecule-regulated photophysics of oligo(p-phenyleneethynylene)-based rod-coil block copolymers: Effect of molecular architecture
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Three new topology-varied rod-coil block copolymers, comprising the same oligo(p-phenyleneethynylene) (OPE) rod components and the same coil components, were synthesized by atom-transfer radical polymerization. Their photophysical properties were systematically studied and compared in consideration of their solid-state structures and self-assembly abilities. These copolymers have similar intrinsic photophysical properties to the OPE rods, as reflected in dilute solution. However, their photophysical properties in the solid state are manipulated to be dissimilar by supramolecular organization. Wide-angle X-ray diffraction (WAXD) and atomic force microscopy (AFM) data demonstrate that these copolymers possess different self-assembly abilities due to the molecular-architecture-dependent π-π interactions of the rods. Hence, the aggregates in the solid state are formed with a different mechanism for these copolymers, bringing about the discrepancy in the solid-state luminescent properties.
- Pu, Kan-Yi,Qi, Xiao-Ying,Yang, Yan-Lian,Lu, Xiao-Mei,Li, Ting-Cheng,Fan, Qu-Li,Wang, Chen,Liu, Bin,Chan, Hardy Sze On,Huang, Wei
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p. 1205 - 1215
(2008/09/17)
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- Synthesis of double-conjugated-segment molecules and their application as ultra-broad two-photon-absorption optical limiters
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A series of novel double-conjugated-segment molecules, in which two conjugated segments are separated by an ether chain, were synthesized; these compounds provide a very broad two-photon absorption spectral range, which satisfies an urgent need in the optical limiting area.
- Zhang, Junxiang,Cui, Yiping,Wang, Mingliang,Liu, Juzheng
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p. 2526 - 2527
(2007/10/03)
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- Synthesis and characterization of photorefractive polymers containing transition metal complexes as photosensitizer
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This paper reports detailed synthesis and characterization of a hybridized polymer system which combines the ionic transition metal complexes and a conjugated polymer backbone bearing NLO chromophores to manifest a large photorefractive (PR) effect. In th
- Peng, Zhonghua,Gharavi, Ali R.,Yu, Luping
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p. 4622 - 4632
(2007/10/03)
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