Photoluminescence of poly

J.-I. Lee, G. Klaemer, and R.D. Miller, Oxidative stability and its effect on the photoluminescence of poly(fluorene) derivatives end group effects, Chem. Mater., 11 1083-1088, 1999. 

Chunwaschirasiri W, Tanto B, Huber DL, Winokur MJ (2005) Chain conformations and photoluminescence of poly(di-n-octylfluorene). Physical Rev Lett 94(10) 107402-1-107402-4... 

Papadimitrakopoulos, R, et al. 1994. The role of carbonyl groups in the photoluminescence of poly(p-phenylene vinylene). Chem Mater 6 1563. 

Tunable Photoluminescence of Poly(quinoline)s in Polymer Blend Films and Silica... 

Raman spectrum and photoluminescence of poly (2,5 bis (2-thienyl) 3-alkylthiophene) In this chapter the polymers are denoted pA3Th-C or pA3Th-E ( is defined in Table 14.16, C(E) refers to chemical (electrochemical) oxidative polymerization). The Raman analysis developed for polythiophene cannot be strictly applied because the Raman spectra are not identical. In particular, the R and p criteria may be redefined. However, some qualitative argimients of this analysis can be used in order to compare polymers prepared from silylated and hydrogenated monomers. 

Photoluminescence of poly (1,4 bis(2-thienyl) 2,5 dialkoxy phenylene) Room-temperature photoluminescences taken on pA2ThB-Cl and pA2ThB-Cl polymers (Table 14.17) are shown in Figure 14.42. These spectra have been obtained from polymers in solution [132]. Two results can be emphasized ... 

The photoelectronic properties of poly(dihexylgermane) were investigated by photoluminescence spectroscopy, after one- and two-photon absorption. The spectra were compared with those of the analogous poly(dihexylsilane)111. 

C.L. Gettinger, A.J. Heeger, J.H. Drake, and D.J. Pine, A photoluminescence study of poly (phenylene vinylene) derivatives the effect of intrinsic persistence length, J. Chem. Phys., 101 1673-1678, 1994. 

K. Yoshino, M. Hirohata, T. Sonoda, R. Hidayat, A. Fujii, A. Naka, and M. Ishikawa, Electroluminescence and photoluminescence characteristics of poly(disilanylene oligophenylenejs and poly(disilanylene oligothienylenejs, Synth. Met., 102 1158, 1999. 

L.S. Swanson, J. Shinar, Y.W. Ding, and T.J. Barton, Photoluminescence, electroluminescence, and optically detected magnetic resonance study of 2,5-dialkoxy derivatives of poly(p-phenylene acetylene) (PPA) and PPA-based light-emitting diodes, Synth. Met., 55 1-6, 1993. 

BMW Langeveld-Voss, R Janssen, MPT Christiaans, SCJ Meskers, HPJM Dekkers, and EW Meijer, Circular dichroism and circular polarization of photoluminescence of highly ordered poly 3,4-di[(5)-2-methylbutoxy]thiophene, J. Am. Chem. Soc., 118 4908 -909, 1996. 

DPAs and 1-phenyl-1-alkynes show intense photo- and electroluminescences. A systematic investigation on the luminescence of poly(DPAs) has revealed that these polymers exhibit photoluminescence around 530 nm and electroluminescence around 550 nm. In a similar way, poly(l-phenyl-1-alkynes) photochemically and electrochemi-cally emit strong lights with spectral maxima located around 455 and 470 nm, respectively. Green and blue emissions are observed from the electroluminescent devices using poly(DPAs) and poly(l-phenyl-1-alkynes) as the emission layers, respectively. ... 

Whereas in solution the photoluminescence efficiency (Of) of poly(3-alkylthiophenes) (PATs) is 3(Mf)%, it drastically drops to 1-4% and lower in the solid state due to the increased contribution of nonradiative decay via interchain interactions and ISC caused by the heavy-atom effect of sulfur (97MM4608). Optoelectronic devices of this type of compounds have been studied (98SCI(280)1741 06SM(156)1241). Fibers of poly(3-hex-ylthiophene) for photovoltaic applications have been described (07MI1377). Poly(3-octylthiophene) showed a TTA band at 800 nm (96JPC15309). The photophysical properties of some alkyl and aryl polythiophenes have been studied (03JCP(118)1550). The absorption maximum of poly(3-octylthiophene) is at 438 nm, while the fluorescence was... 

Rhenium(I) tricarbonyl-2,2 -bipyridine moieties were used to cap both ends of a poly fluorine, yielding Re-capped Re(bpy)(CO)3(py)-X-(py)(CO)3(bpy)Re 2+ polymers, where X = polyfluorene [51, 52], The polymers with and without the Re caps were spin-coated from their solutions in CH2C12 onto an ITO surface previously modified with a layer of poly(styrene sulfonic acid), doped with poly(ethylenedioxythiophene). The LED (light-emitting device) was then topped with a layer of Ca/Al. The photoluminescence (PL) and electroluminescence seen were consistent with the presence of [Re(bpy)(CO)3(py)]+ [158],... 

Copolymers containing alternating l,4-bis(phenylethenyl)benzene, l,4-bis(phenylethenyl)-2,5-dimethoxybenzene or l,5-bis(phenylethenyl)naphthalene chromophores, and dibenzo-24-crown-8 spacers within the polymer backbone, best represented by 87, showed blue light emission in solution, and tunable photoluminescence and electroluminescence depending on the structure of the chromophore. Blends of these copolymers with a small amount of poly(ethylene oxide), and lithium salt as active layers, form efficient light-emitting electrochemical cells <2003JMC800>. 

The skeleton-side-chain interaction is reflected in optical properties. The absorption and photoluminescence spectra of poly(methylpropylsilane) and poly(methylphenylsilane) are shown in Figure 14. For poly-(methylpropylsilane), the spectrum profiles are explained by the simple band model just discussed. However, for poly(methylphenylpolysilane), the spectrum profiles are very different. The absorption peak at 3.7 eV corresponds to a a-a transition, and the second peak at 4.5 eV corresponds to a tt-tt transition in phenyl side chains. The sharp photoluminescence peak originates from the a -CT transition. 

Polarised fluorescence has been used to study the orientation of non-crystalline polymer chains and a fluorescence technique has been developed to quantify the amount of microgel in polyacryl-amide. Time resolved photoluminescence analysis of poly( -phenyl-... 

Yamase, T. Sugeta, M. Charge-transfer photoluminescence of polyoxo-tungstates and poly-oxo-molybdates. J. Chem. Soc. - Dalton Trans. 1993, 759-765. 

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