CD spectra of poly

Figure 4.7 UV and CD spectra of poly silane homopolymer 4 (solid lines) and copolymer 10 (dotted lines) containing 10 mol % of (6 )-2-methylbutyl and 90 mol % of 2-methylpropyl groups in isooctane at —5°C.

Figure 4.22 UV-Vis and CD spectra of poly[ -hexyl(/ -(S)-2-methylbutoxyphenyl)silane] (40) aggregates prepared by methods I and II at 55%/45% THF/methanol volume ratio at 20°C.

Figure 35 UV and CD spectra of poly[methyl-(S)-2-methylbutylsilylene] in isooctane at 25 °C before and after cut-and-paste experiment.204 Reprinted with permission from Fujiki, M. Macromol. Rapid Commun. 2001,22, 539-563, 2001 Wiley-VCH.

Fig.6 CD spectra of poly(Ne-p-phenylazobenzenesulfonyl-L-lysine) (VI) in various HFP/MeOH solvent mixtures (v/v) a) 0% b) 2% c) 5% d) 8% e) 15%. Continuous line kept in the dark or irradiated at 417 nm dashed line irradiated at 340 nm.

Fig. 10 Effect of irradiation and dark-adaptation on CD spectra of poly(L-glutamic acid) containing 85 mol%spiropyran units, in HFP 1) Kept in the dark 2) exposed to sunlight dashed lines intermediate spectra during decay in the dark over 8 h.

Figure 7a compares the UV and CD spectra of homopolymer 4-S and copolymer 10 with 10 mol % of (S)-2-methylbutyl and 90 mol % of 2-methyl-propyl side groups in isooctane at - 5 °C. The UV-CD spectra of 10 are almost identical to those of 4-S, with the CD signal profile matching the corresponding UV absorption, except for their 7,max values. As expected, the UV and CD spectra of copolymer 11 bearing (JR)-2-methylbutyl side groups reveal almost identical features to those in 4-R, the corresponding antipode of 4-S, except for the sign of the CD band, as shown in Fig. 9b. For comparison, UV and CD spectra of poly(n-hexyl-2-methylpropylsilane) (12) in isooctane at - 5 °C are displayed in Fig. 7c. It is evident that UV spectral characteristics (Amax,...

Figure 10. CD spectra of poly(n-hexylisocyanate) (poly-85) dissolved in optically active solvents at 20 °C. Ultraviolet spectrum (bottom) shown only for (A)-2-chlorobutane (polymer concentration 1.9 mg/mL). (Reprinted with permission from ref 171. Copyright 1993 American Chemical Society.)...

Figure 3. Experimental CD spectra of poly[Lys(Z) -1-nag la] in trimethyl phosphate at room temperature, [Nap] = 5.0x10 M. Numbers in the figure indicate the number of LysCZ) units, m.

Figure 4. Theoretical CD spectra of poly[Ala -1-napAla] in a-helical conformation with the least-energy side-chain conformation predicted from the ECEPP energy calculation. Numbers in the figure indicate m.

Fig. 8. CD spectra of poly-L-lysine in different chain conformations [18]...

Fig. 4. The effect of temperature on CD spectra of poly(i and short chain 1 used as in Fig. 3...

Figure 3. CD spectra of poly-trans-3-ethyl-D-proline. In trifluoroethanol, ( —...

We therefore carried out a series of studies on the circular dichroism spectrum of poly(i -oxypropylene) in a number of solvents in the vacuum ultraviolet region under the cooperation with W.C. Johnson, Oregon State University. In the circular dichroism(CD) spectra of poly(/ -oxypropylene), two CD bands were observed for cyclohexane, acetonitrile, and trifluoroethanol(TFE) solutions. 

Figure 14.3 CD spectra of poly(L-glutainic acid) bearing 36 mol% azobenzme units, before (-----) and after (—) irradiation, in aqueous solution at various pH values A,...

FIGURE 6.13. CD spectra of poly(dG) poly(dC), poly(dG-dC), poly(dA-dG) poly(dC-dT) and poIy(dA-dC)-poly(dG-dT) (Redrawn from Ref. 29.)... 

FIGURE 9.1. CD spectra of poly-lysine-DNA complexes (a) and HI-hlstone-DNA complexes (b) at different polypeptide/DNA ratios r expressed in mole residues amino acid or nucleotide. 

Figure 13.2. CD spectra of poly(L-lysine)7 1, a-helix at pH = 11.1 2, j8-structure obtained by heat treatment at 52 C for 15 in at pH = 11.1 3, random coil at pH = 5.7. (Reproduced with permission of the American Chemical Society.)...

Fig. 10. CD spectra of poly-cyclohexylalanine in 59.1% methanesulfonic acid, immediately after the preparation of the solution (curve 1) and 2 hr after the preparation of the solution (curve 2) from ref. [32a]). See the original paper for the experimental details.

Investigations have been carried out, both from theoretical and experimental point of view, on a series of panz-substituted poly-L-phenylalanines [55-57]. Woody calculated the CD spectra of poly-p-amino-phenylalanine by assuming the same geometries and using the same methods as for various helical poly-L-tyrosines [55]. Comparison between computed CD curves and experimental data presently available [56] points strongly toward the RA conformation for the deprotonated polymer in water and excludes the three other... 

Figure 10 (A) The CD spectra of poly (dAdC) poly(dGdT) in the ( ) A (—) B and (—) Z conformations. Redrawn from data in...

Riazance-Lawrence JH and Johnson WC Jr (1992) Biopolymers Z2 271-276 by permission of John Wiley and Sons, Inc. (B) CD spectra of poly(dGdC) poly(dGdC) in the (—) B-form, (-) Z-form and ( ) in a form in which the bases assume the Hoogsteen base-... 

Figure 11 CD spectra of poly(dT) poly(dA) poly(dT) in the presence of (O) 0 ( ) 60 (V) 70 ( ) 80 ( ) 90 and ( ) 100 (xM spermidine. The insert shows the effects of (O) 0, ( ) 5, (T) 10, and ( ) 25 pM spermidine. Data were recorded at 25°C in 10 mM sodium oaoodyiate and 0.5 mM EDTA at pH 7.2. Redrawn with permission from data in Thomas TJ, Kulkarni GD, Greenfield NJ, Shirahata A and Thomas T. (1996) Biochem J. 319 591-599. Copyright (1996) Portiand Press.

Figure 12 CD spectra of poly(dA)complexed with the gene 32 coded protein of bacteriophage T4 at (—) 1.0, (—-) 29.9 and (..) 47.7°C. The nucleotide to protein ratio is 8.5. Also illustrat-...

The CD spectra of poly(D-lysine) reflect a markedly low degree of complexation. The prevalent part of poly(D-lysine) remains in unchanged random coil arrangement. The extent of complexation may be judged from comparison with the CD spectrum of poly(D-lysine) at pH = 11.3 (Fig. 11.1). Complexation efficiency of poly(L-lysine) with pectate is almost 100% while with poly(D-lysine)... 

Fig. 42 Experimental CD spectra of poly(DBF) having a menthoxy terminal group measured at different temperatures (in THE) (a) and theoretical CD spectra (b) of model dimer having different dihedral angles (c). Reprinted with permission from Nakano et al. [36], Copyright 2009, Wiley...

Figure 6.5 (a) Schematic representation of the macromolecular helicity induction on poly(1 -co-5 ) upon complexation with L-alanine. The achiral fullerene and crown ether pendants represented by yellow and blue rings for clarity arrange in a helical array along the one-handed helical polymer backbone induced by noncovalent chiral interactions with L-alanine. (b) CD spectra of poly(1o.i-co-5o,) with L- and o-Ala HClO ([Ala-HCl04]/[poly(1o.,-co-5o,)] = 2) in dichloromethane-acetonitrile (8/2, v/v) at 25... 

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