Franck poly

The above described model sequences have been studied both as oligomers [7,8,11-13,19] and as polymers [9,11,20]. An increase in the size of the helix is known to reinforce its stability, as revealed by their melting curves [18] and attested by X-ray diffraction measurements in solution [21]. Therefore, in this chapter we focus on the polymeric duplexes poly(dGdC).poly(dGdC) [= 1000 base-pairs], poly(dAdT).poly(dAdT) [= 200-400 base-pairs] and poly(dA).poly(dT) [= 2000 base-pairs] studied by us. First we discuss the absorption spectra, which reflect the properties of Franck-Condon states, in connection with theoretical studies. Then we turn to fluorescence properties fluorescence intensity decays (hereafter called simply fluorescence decays ), fluorescence anisotropy decays and time-resolved fluorescence spectra. We... 

Fig. 11 Illustration of the excited state relaxation derived from experimental results obtained for poly(dA).poly(dT) by steady-state absorption and fluorescence spectroscopy, fluorescence upconversion and based on the modeling of the Franck-Condon excited states of (dA)io(dT)io. In red (full line) experimental absorption spectrum yellow circles arranged at thirty steps represent the eigenstates, each circle being associated with a different helix conformation and chromophore vibrations.

W. Kaminsky and J. Franck, Monomer recovery by pyrolysis of poly(methylmeth-acrylate) (PMMA), Journal of Analytical and Applied Pyrolysis, 19,311-318 (1991). 

Cha H. J., Izumi T., Kokufuta E., Franck C. W. Spectroscopic studies of papain complexation with potassium poly(vinyl alcohol sulphate) ACS Polym. Preprints 1992 33 872-873. 

For block copolymers, the assignment of the MALDI peaks provides useful structure information. A ,B means a block of "m" consecutive units of A followed by a block of "n" consecutive units of B. Francke et al. ° used a monomer with a triple bond to synthetize a poly(para-phenylene... 

Francke, V., Rader, H. J., Geerts, Y, and Mullen, K., Synthesis and Gharacter-ization of a Poly(para-phenyleneethylene)-btocfc-poly(ethylene oxide) Rod-coil Block Copolymer, Macromol. Rapid Commun., 19, 275, 1998. 

Francke, V., T. Mangel, and K. Mullen. 1998. Synthesis of alpha, omega-diffinctionalized oligo- and poly(p-phenyleneethynylene)s. Macromolecules 31 2447. 

Francke, V, et al. 1998. Synthesis and characterization of a poly(pflr(jphenyleneethynylene)-block-poly(ethylene oxide) rod-coil block copolymer. Macromol Rapid Commun 19 275. 

Przybilla, L., Francke, V., Raeder, H.)., and Muellen, K. (2001) Block length determination of a poly(ethylene oxide)-b-poly(p-phenylene ethynylene) diblock copolymer by means of MALDI-TOF mass spectrometry combined with fragment-ion analysis. Macromolecuks, 34, 4401-4405. 

Sugiyama H, Fischer U, Antonijuan E, Hoffrnann VH, Hirao M, Hungerbuehler K. How do different process options and evaluation settings affect economic and environmental assessments A case study on methyl methacrylate (MMA) production processes. Process Saf Environ 2009 87(6) 361—70. Displaysearch (28.05.2015). Available from http //www.displaysearch.com/cps/rde/xchg/displaysearch/ hs.xsl/130516 flat panel pubHc display market expected to grow atmually through 2017.asp. Kaminsky W, Franck J. Monomer recovery by pyrolysis of poly(methyl methacrylate) (PMMA). J Anal Appl Pyrolysis 1991 19 311-8. 

Figure41 SFM images of nanoribbons found in thin fiims of poly(p-phenyleneethynylene)-block-poiy(dimethyisiioxane). (Reprinted from P. Leci re, A. Calderone, D. Marsitzky, V. Francke, K. MUiien, J.L. Br6das, and R. Lazzaroni. Synth. Met. 121 1295, 2001. Copyright [2001] Elsevier. With permission.)...

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