-
1
-
-
0017542596
-
-
a) C. I. Simionescu, V. Percec, S. Dumitrescu, J. Polym. Sci. Polym. Chem. Ed. 1977, 15, 2497-2509;
-
(1977)
J. Polym. Sci. Polym. Chem. Ed.
, vol.15
, pp. 2497-2509
-
-
Simionescu, C.I.1
Percec, V.2
Dumitrescu, S.3
-
3
-
-
73249139071
-
-
B. M. Rosen, C. J. Wilson, D. A. Wilson, M. Peterca, M. R. Imam, V. Percec, Chem. Rev. 2009, 109, 6275-6540.
-
(2009)
Chem. Rev.
, vol.109
, pp. 6275-6540
-
-
Rosen, B.M.1
Wilson, C.J.2
Wilson, D.A.3
Peterca, M.4
Imam, M.R.5
Percec, V.6
-
4
-
-
84889429106
-
-
Helically Folding Polymers Eds.: S. Hecht, I. Hue, Wiley-VCH, Weinheim chap. 11 and references therein
-
a) "Helically Folding Polymers": E. Yashima, K. Maeda in Foldamers: Structure Properties and Applications (Eds.: S. Hecht, I. Hue), Wiley-VCH, Weinheim, 2007, chap. 11, pp. 331-366, and references therein;
-
(2007)
Foldamers: Structure Properties and Applications
, pp. 331-366
-
-
Yashima, E.1
Maeda, K.2
-
7
-
-
0001407862
-
-
M. M. Green, J.-W. Park, T. Sato, A. Teramoto, S. Lifson, R. L. B. Selinger, J. V. Selinger, Angew. Chem. 1999, 111, 3328-3345;
-
(1999)
Angew. Chem.
, vol.111
, pp. 3328-3345
-
-
Green, M.M.1
Park, J.-W.2
Sato, T.3
Teramoto, A.4
Lifson, S.5
Selinger, R.L.B.6
Selinger, J.V.7
-
8
-
-
0033517692
-
-
Angew. Chem. Int. Ed. 1999, 38, 3138-3154;
-
(1999)
Angew. Chem. Int. Ed.
, vol.38
, pp. 3138-3154
-
-
-
9
-
-
84890700094
-
-
Expression of Chirality in Polymers Ed.: D. B. Amabilino, Wiley-VCH, Weinheim chap. 5
-
e) "Expression of Chirality in Polymers": T. Sierra in Chirality at the Nanoscale: Nanoparticles, Surfaces Materials and more (Ed.: D. B. Amabilino), Wiley-VCH, Weinheim, 2009, chap. 5, pp. 115-190.
-
(2009)
Chirality at the Nanoscale: Nanoparticles, Surfaces Materials
, pp. 115-190
-
-
Sierra, T.1
-
10
-
-
17144364271
-
-
a) T. Miyagawa, A. Furuku, K. Maeda, H. Katagiri, Y. Furusho, E. Yashima, J. Am. Chem. Soc. 2005, 127, 5018-5019;
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 5018-5019
-
-
Miyagawa, T.1
Furuku, A.2
Maeda, K.3
Katagiri, H.4
Furusho, Y.5
Yashima, E.6
-
11
-
-
0038450358
-
-
b) K. Tang, M. M. Green, K. S. Cheon, J. V. Selinger, B. A. Garetz, J. Am. Chem. Soc. 2003, 125, 7313-7323;
-
(2003)
J. Am. Chem. Soc.
, vol.125
, pp. 7313-7323
-
-
Tang, K.1
Green, M.M.2
Cheon, K.S.3
Selinger, J.V.4
Garetz, B.A.5
-
12
-
-
33646544017
-
-
S. Sakurai, K. Okoshi, J. Kumaki, E. Yashima, J. Am. Chem. Soc. 2006, 128, 5650-5651;
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 5650-5651
-
-
Sakurai, S.1
Okoshi, K.2
Kumaki, J.3
Yashima, E.4
-
13
-
-
34250640339
-
-
K. Okoshi, S. Sakurai, J. K. Ohsawa, E. Yashima, Angew. Chem. 2006, 118, 8353-8356;
-
(2006)
Angew. Chem.
, vol.118
, pp. 8353-8356
-
-
Okoshi, K.1
Sakurai, S.2
Ohsawa, J.K.3
Yashima, E.4
-
14
-
-
33845738384
-
-
Angew. Chem. Int. Ed. 2006, 45, 8173-8176;
-
(2006)
Angew. Chem. Int. Ed.
, vol.45
, pp. 8173-8176
-
-
-
15
-
-
0034834627
-
-
e) E. Yashima, K. Maeda, O. Sato, J. Am. Chem. Soc. 2001, 123, 8159-8160;
-
(2001)
J. Am. Chem. Soc.
, vol.123
, pp. 8159-8160
-
-
Yashima, E.1
Maeda, K.2
Sato, O.3
-
17
-
-
34250832094
-
-
Angew. Chem. Int. Ed. 2007, 46, 3693-3696;
-
(2007)
Angew. Chem. Int. Ed.
, vol.46
, pp. 3693-3696
-
-
-
18
-
-
41549156500
-
-
g) D. Pijper, M. G. M. Jongejan, A. Meetsma, B. L. Feringa, J. Am. Chem. Soc. 2008, 130, 4541-4552.
-
(2008)
J. Am. Chem. Soc.
, vol.130
, pp. 4541-4552
-
-
Pijper, D.1
Jongejan, M.G.M.2
Meetsma, A.3
Feringa, B.L.4
-
19
-
-
84863847854
-
-
Switching at the Nanoscale: Chiroptical Molecular Switches and Motors Ed.: D.B. Amabilino, Wiley-VCH, Weinheim chap. 11
-
a) "Switching at the Nanoscale: Chiroptical Molecular Switches and Motors": W. E. Browne, D. Pijper, M. M. Pollard, B. L. Feringa in Chirality at the Nanoscale: Nanoparticles, Surfaces Materials and more (Ed.: D.B. Amabilino), Wiley-VCH, Weinheim, 2009, chap. 11, pp. 349-390;
-
(2009)
Chirality at the Nanoscale: Nanoparticles, Surfaces Materials
, pp. 349-390
-
-
Browne, W.E.1
Pijper, D.2
Pollard, M.M.3
Feringa, B.L.4
-
22
-
-
51549108741
-
-
b) K. K. L. Cheuk, B. S. Li, J. W. Y. Lam, B. Z. Tang, Macromolecules 2008, 41, 5997-6005;
-
(2008)
Macromolecules
, vol.41
, pp. 5997-6005
-
-
Cheuk, K.K.L.1
Li, B.S.2
Lam, J.W.Y.3
Tang, B.Z.4
-
23
-
-
0041975128
-
-
K. K. L. Cheuk, J. W. Y. Lam, J. Chen, M. L. Lai, B. Z. Tang, Macromolecules 2003, 36, 5947-5959;
-
(2003)
Macromolecules
, vol.36
, pp. 5947-5959
-
-
Cheuk, K.K.L.1
Lam, J.W.Y.2
Chen, J.3
Lai, M.L.4
Tang, B.Z.5
-
24
-
-
0037435643
-
-
B. S. Li, K. K. L. Cheuk, L. Ling, J. Chen, X. Xiao, C. Bai, B. Z. Tang, Macromolecules 2003, 36, 77-85.
-
(2003)
Macromolecules
, vol.36
, pp. 77-85
-
-
Li, B.S.1
Cheuk, K.K.L.2
Ling, L.3
Chen, J.4
Xiao, X.5
Bai, C.6
Tang, B.Z.7
-
25
-
-
67649201437
-
-
The Perchlorate anion does not play a significant role in the phenomenon: we verified that the addition of tetrabutylammonium Perchlorate does not cause inversion. Also see: a
-
The Perchlorate anion does not play a significant role in the phenomenon: we verified that the addition of tetrabutylammonium Perchlorate does not cause inversion. Also see: a) R. Kakuchi, S. Nagata, Y. Tago, R. Sakai, I. Otsuka, T. Satoh, T. Kakuchi, Macromolecules 2009, 42, 3892-3897;
-
(2009)
Macromolecules
, vol.42
, pp. 3892-3897
-
-
Kakuchi, R.1
Nagata, S.2
Tago, Y.3
Sakai, R.4
Otsuka, I.5
Satoh, T.6
Kakuchi, T.7
-
26
-
-
56349129185
-
-
b) R. Kakuchi, S. Nagata, R. Sakai, I. Otsuka, H. Nakade, T. Satoh, T. Kakuchi, Chem. Eur. J. 2008, 14, 10259-10266.
-
(2008)
Chem. Eur. J.
, vol.14
, pp. 10259-10266
-
-
Kakuchi, R.1
Nagata, S.2
Sakai, R.3
Otsuka, I.4
Nakade, H.5
Satoh, T.6
Kakuchi, T.7
-
27
-
-
61349185904
-
-
a) J. Kumaki, S. Sakurai, E. Yashima, Chem. Soc. Rev. 2009, 38, 737-746;
-
(2009)
Chem. Soc. Rev.
, vol.38
, pp. 737-746
-
-
Kumaki, J.1
Sakurai, S.2
Yashima, E.3
-
28
-
-
70350763353
-
-
b) S. Sakurai, S. Ohsawa, K. Nagai, K. Okoshi, J. Kumari, E. Yashima, Angew. Chem. 2007, 119, 7749-7752;
-
(2007)
Angew. Chem.
, vol.119
, pp. 7749-7752
-
-
Sakurai, S.1
Ohsawa, S.2
Nagai, K.3
Okoshi, K.4
Kumari, J.5
Yashima, E.6
-
29
-
-
35048837491
-
-
Angew. Chem. Int. Ed. 2007, 46, 7605-7608.
-
(2007)
Angew. Chem. Int. Ed.
, vol.46
, pp. 7605-7608
-
-
-
30
-
-
33749675099
-
-
F. Sanda, J. Tabei, M. Shiotsuki, T. Masuda, Sci. Technol. Adv. Mater. 2006, 7, 572-577.
-
(2006)
Sci. Technol. Adv. Mater.
, vol.7
, pp. 572-577
-
-
Sanda, F.1
Tabei, J.2
Shiotsuki, M.3
Masuda, T.4
-
31
-
-
4444382528
-
-
When interchain hydrogen bonds are formed, self-assembly into micellar spheres, helical cables, and fibers takes place; see: a
-
When interchain hydrogen bonds are formed, self-assembly into micellar spheres, helical cables, and fibers takes place; see: a) B. S. Li, S. Z. Kang, K. K. L. Cheuk, L. Wang, L. Ling, C. Bai, B. Z. Tang, Langmuir 2004, 20, 7598-7603;
-
(2004)
Langmuir
, vol.20
, pp. 7598-7603
-
-
Li, B.S.1
Kang, S.Z.2
Cheuk, K.K.L.3
Wang, L.4
Ling, L.5
Bai, C.6
Tang, B.Z.7
-
32
-
-
0042201978
-
-
b) B. S. L. Kevin, K. K. L. Cheuk, D. Yang, J. W. Y. Lam, L. J. Wan, C. Bai, B. Z. Tang, Macromolecules 2003, 36, 5447-5450.
-
(2003)
Macromolecules
, vol.36
, pp. 5447-5450
-
-
Kevin, B.S.L.1
Cheuk, K.K.L.2
Yang, D.3
Lam, J.W.Y.4
Wan, L.J.5
Bai, C.6
Tang, B.Z.7
-
33
-
-
76649127511
-
-
Calculations were performed with Gaussian 03 and Spartan 08 program packages. See the Supporting Information for details
-
Calculations were performed with Gaussian 03 and Spartan 08 program packages. See the Supporting Information for details.
-
-
-
-
34
-
-
0027110825
-
-
For a pioneering work on theoretical calculations of polyisocyanates, see
-
For a pioneering work on theoretical calculations of polyisocyanates, see: S. Lifson, C. E. Felder, M. M. Green, Macromolecules 1992, 25, 4142-4148.
-
(1992)
Macromolecules
, vol.25
, pp. 4142-4148
-
-
Lifson, S.1
Felder, C.E.2
Green, M.M.3
-
35
-
-
27544455742
-
-
The temperature dependence of the intensity of the CD bands has been also explained on the basis of the helical extension/ compression of the main chain (cisoid-to-transoid conformational isomerization) in the case of dendronized poly(phenylacetylene)s. Presumably this second phenomenon is also present in our case because a change in the length of the backbone can be produced when the pendants change from sp1 to sp2 owing to the steric hindrance with the neighboring pendants (Figure 4 b). Because of the smaller size of our pendants relative to those of the dendronized poly(phenylacetylene)s, in the polymers described herein the contribution of helical extension/compression to the intensity of the CD bands should be less important than the main contribution due to helical reversal. See: a
-
The temperature dependence of the intensity of the CD bands has been also explained on the basis of the helical extension/ compression of the main chain (cisoid-to-transoid conformational isomerization) in the case of dendronized poly(phenylacetylene)s. Presumably this second phenomenon is also present in our case because a change in the length of the backbone can be produced when the pendants change from sp1 to sp2 owing to the steric hindrance with the neighboring pendants (Figure 4 b). Because of the smaller size of our pendants relative to those of the dendronized poly(phenylacetylene)s, in the polymers described herein the contribution of helical extension/compression to the intensity of the CD bands should be less important than the main contribution due to helical reversal. See: a) V. Percec, J. G. Rudick, M. Peterca, M. Wagner, M. Obata, C. M. Mitchell, W.-D. Cho, V. S. K. Balagurusamy, P. A. Heiney, J. Am. Chem. Soc. 2005, 127, 15257-15264;
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 15257-15264
-
-
Percec, V.1
Rudick, J.G.2
Peterca, M.3
Wagner, M.4
Obata, M.5
Mitchell, C.M.6
Cho, W.-D.7
Balagurusamy, V.S.K.8
Heiney, P.A.9
-
36
-
-
44949238078
-
-
and also references [1b-c]
-
b) V. Percec, J. G. Rudick, M. Peterca, P. A. Heiney, J. Am. Chem. Soc. 2008, 130, 7503-7508; and also references [1b-c].
-
(2008)
J. Am. Chem. Soc.
, vol.130
, pp. 7503-7508
-
-
Percec, V.1
Rudick, J.G.2
Peterca, M.3
Heiney, P.A.4
-
37
-
-
85004870442
-
-
a) S. Devarajan, M. Vijayan, K. R. K. Easwaran, Int. J. Peptide Protein Res. 1984, 23, 324-333;
-
(1984)
Int. J. Peptide Protein Res.
, vol.23
, pp. 324-333
-
-
Devarajan, S.1
Vijayan, M.2
Easwaran, K.R.K.3
-
38
-
-
0041800510
-
-
b) B. López, E. Quiñoá, R. Riguera, J. Am. Chem. Soc. 1999, 121, 9724-9725;
-
(1999)
J. Am. Chem. Soc.
, vol.121
, pp. 9724-9725
-
-
López, B.1
Quiñoá, E.2
Riguera, R.3
-
39
-
-
0037189213
-
-
R. García, J. M. Seco, S. A. Vázquez, E. Quiñoá, R. Riguera, J. Org. Chem. 2002, 67, 4579-4589;
-
(2002)
J. Org. Chem.
, vol.67
, pp. 4579-4589
-
-
García, R.1
Seco, J.M.2
Vázquez, S.A.3
Quiñoá, E.4
Riguera, R.5
-
40
-
-
32144461711
-
-
R. García, J. M. Seco, S. A. Vázquez, E. Quiñoá, R. Riguera, J. Org. Chem. 2006, 71, 1119-1130.
-
(2006)
J. Org. Chem.
, vol.71
, pp. 1119-1130
-
-
García, R.1
Seco, J.M.2
Vázquez, S.A.3
Quiñoá, E.4
Riguera, R.5
-
41
-
-
76649124669
-
-
Analogous reasoning can be applied for poly-(S)-1, taking into account that the starting helicity is the opposite (left-handed) because of the enantiomeric chirality of the pendant
-
Analogous reasoning can be applied for poly-(S)-1, taking into account that the starting helicity is the opposite (left-handed) because of the enantiomeric chirality of the pendant.
-
-
-
-
42
-
-
33745699433
-
-
L. M. Lai, J. W. Y. Lam, A. Qin, Y. Dong, B. Z. Tang, J. Phys. Chem. B 2006, 110, 11128-11138.
-
(2006)
J. Phys. Chem. B
, vol.110
, pp. 11128-11138
-
-
Lai, L.M.1
Lam, J.W.Y.2
Qin, A.3
Dong, Y.4
Tang, B.Z.5
-
43
-
-
61749094582
-
-
75th ed. (Ed.: D. R. Lide), CRC Press, Boca Raton, FL
-
a) CRC Handbook of Chemistry and Physics, 75th ed. (Ed.: D. R. Lide), CRC Press, Boca Raton, FL, 1994, pp. 6-155-6-188;
-
(1994)
CRC Handbook of Chemistry and Physics
, pp. 6155-6188
-
-
|