Peng, Kang-Yung published the artcileEfficient Light Harvesting by Sequential Energy Transfer across Aggregates in Polymers of Finite Conjugational Segments with Short Aliphatic Linkages, SDS of cas: 146370-51-6, the publication is Journal of the American Chemical Society (2001), 123(46), 11388-11397, database is CAplus and MEDLINE.
A series of light-harvesting polymers (poly-DSBs) of dialkyloxy- or dialkyl-substituted distyrylbenzene ( substituents = methoxy, 2-ethylhexyloxy, and cyclohexyl) with methylene or ethylene spacers were prepared The interactions between lumophores and the role of chem. structure of poly-DSBs on the absorption, emission, and excitation spectra were studied. The proximity of distyrylbenzene lumophores was critical to effective interactions and to the energy-transfer processes. In concentrated solutions and solid films, intermol. aggregates exist resulting from different extents of interactions between lumophores and involve at least three species: loose, compact, and aligned aggregates as observed by photoluminescence and excitation spectroscopy. Sequential energy transfer was directly observed from individual lumophores to the most compact, aligned aggregates via looser intermol. aggregates by time-resolved fluorescence spectroscopy. This process mimics energy transfer in photosynthesis and is highly efficient; fluorescence can be red-shifted drastically by the presence of comparatively few aggregates and light from concentrated solutions and films of poly-DSBs is entirely or almost due to aggregation emission. Although sequential energy-transfer in fully conjugated electro/photoluminescent polymers due to inhomogeneity other than distributed conjugation length has never been directly observed at room temperature, events similar to those observed in poly-DSBs could occur but on a much shorter time scale, i.e., a few picoseconds.
Journal of the American Chemical Society published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, SDS of cas: 146370-51-6.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem