3
214 Macromolecules, Vol. 43, No. 7, 2010
Ohishi et al.
precipitation. The poly(N-OOB-m-benzamide) arm and segment
were converted to poly(N-H-m-benzamide) ones by treatment
with TFA. In the H NMR spectra of the block-arm star4 and the
J. Am. Chem. Soc. 1999, 121, 9239–9240. (e) Lubbad, S.; Buchmeiser,
M. R. Macromol. Rapid Commun. 2003, 24, 580–584. (f) Kricheldorf,
H. R. Angew. Chem., Int. Ed. 2006, 45, 5752–5784. (g) Nomura, K.;
Watanabe, Y.; Fujita, S.; Fujiki, M.; Otani, H. Macromolecules 2009,
1
miktoarm star7 in DMSO at 23 ꢀC, the signal of the poly(N-octyl-
m-benzamide) moiety was weakly observed, but its intensity
increased to the expected level on heating. This observation
indicates that the poly(N-octyl-m-benzamide) moiety, which is
insoluble in DMSO, is packed in the star polymers at 23 ꢀC and
extended at higher temperatures. It seems intriguing that semi-
rigid aromatic polyamide arms in star polymers can dynamically
change the molecular geometry in response to thermal stimula-
tion, as in the case of star polymers composed of flexible coil
polymers.
4
2, 899–901.
6) (a) Kricheldorf, H. R.; Adebahr, T. Makromol. Chem. 1993, 194,
103–2115. (b) Kricheldorf, H. R.; Stukenbrock, T. Polymer 1997, 38,
(
(
2
3373–3383. (c) Kricheldorf, H. R.; Stukenbrock, T.; Friedrich, C.
J. Polym. Sci., Part A: Polym. Chem. 1998, 36, 1387–1395. (d) Honda,
K.; Maruyama, T.; Yamamoto, T. Synth. Met. 1997, 90, 153–155.
(
e) Nagase, Y.; Nakagawa, J. Kobunshi Ronbunshu 2000, 57, 678–684.
7) (a) Aujard, I.; Baltaze, J.-P.; Baudin, J.-B.; Cogn ꢀe , E.; Ferrage, F.;
Jullien, L.; Perez, E.; Pr ꢀe vost, V.; Qian, L. M.; Ruel, O. J. Am.
Chem. Soc. 2001, 123, 8177–8188. (b) Abd-El-Aziz, A. S.; Todd,
K. E.; Afifi, T. H. Macromol. Rapid Commun. 2002, 23, 113–117.
(
3
c) Li, B.; Li, J.; Fu, Y.; Bo, Z. J. Am. Chem. Soc. 2004, 126, 3430–
431. (d) Nicolas, Y.; Blanchard, P.; Levillain, E.; Allain, M.; Mercier,
Acknowledgment. This study was supported by a Scientific
Frontier Research Project Grant from the Ministry of Education,
Science, Sport and Culture, Japan. We thank Dr. Toshiyuki
Kataoka (Kanagawa University) for helpful discussions on
DLS analysis.
N.; Roncali, J. Org. Lett. 2004, 6, 273–276.
(
8) (a) Yokoyama, A.; Yokozawa, T. Macromolecules 2007, 40, 4093–
4
1
101. (b) Yokozawa, T.; Yokoyama, A. Prog. Polym. Sci. 2007, 32,
47–172. (c) Yokozawa, T.; Yokoyama, A. Chem. Rev. 2009, 109,
5595–5619.
(
9) (a) Yokozawa, T.; Asai, T.; Sugi, R.; Ishigooka, S.; Hiraoka, S.
J. Am. Chem. Soc. 2000, 122, 8313–8314. (b) Yokozawa, T.; Muroya,
D.; Sugi, R.; Yokoyama, A. Macromol. Rapid Commun. 2005, 26,
979–981.
References and Notes
(
1) (a) Hadjichristidis, N.; Pitsikalis, M.; Pispas, S.; Iatrou, H. Chem.
Rev. 2001, 101, 3747–3792. (b) Hadjichristidis, N.; Iatrou, H.; Pitsikalis,
M.; Mays, J. Prog. Polym. Sci. 2006, 31, 1068–1132.
(10) (a) Sugi,R.;Yokoyama, A.; Furuyama, T.; Uchiyama, M.; Yokozawa,
T. J. Am. Chem. Soc. 2005, 127, 10172–10173.
(
2) For example (review), see: (a) Hirao, A.; Hayashi, M.; Haraguchi,
N. Macromol. Rapid Commun. 2000, 21, 1171–1184. (b) Hadjichristidis,
N.; Pispas, S.; Iatrou, H.; Pitsikalis, M. Curr. Org. Chem. 2002, 6, 155–
(11) Ohishi, T.; Sugi, R.; Yokoyama, A.; Yokozawa, T. J. Polym. Sci.,
Part A: Polym. Chem. 2006, 44, 4990–5003.
(12) Sugi, R.; Ohishi, T.; Yokoyama, A.; Yokozawa, T. Macromol.
176. (c) Hirao, A.; Hayashi, M.; Tokuda, Y.; Haraguchi, N.; Higashihara,
Rapid Commun. 2006, 27, 716–721.
T.; Ryu, S. W. Polym. J. 2002, 34, 633–658. (d) Hirao, A.; Sugiyama,
K.; Tsunoda, Y.; Matusuo, A.; Watanabe, T. J. Polym. Sci., Part A:
Polym. Chem. 2006, 44, 6659–6687. (e) Hirao, A.; Inoue, K.; Higashihara,
T.; Hayashi, M. Polym. J. 2008, 44, 923–941.
(13) Ohishi, T.; Sugi, R.; Yokoyama, A.; Yokozawa, T. Macromole-
cules 2008, 41, 9683–9691.
(14) Sugi, R.; Hitaka, Y.; Yokoyama, A.; Yokozawa, T. Macromole-
cules 2005, 38, 5526–5531.
(
(
(
3) For example (review), see: (a) Sawamoto, M. Prog. Polym. Sci.
(15) Yoshino, K.; Yokoyama, A.; Yokozawa, T. J. Polym. Sci., Part A:
Polym. Chem. 2009, 47, 6238–6332.
(16) (a) Gitsov, I.; Fr ꢀe chet, J. M. J. J. Am. Chem. Soc. 1996, 118, 3785–
3786. (b) Heise, A.; Hedrick, J. L.; Frank, C. W.; Miller, R. D. J. Am.
Chem. Soc. 1999, 121, 8647–8648.
(17) Bigot, Y. L.; Delmas, M.; Gaset, A. Synth. Commun. 1983, 13, 177–
182.
(18) (a) Dhaon, M. K.; Olsen, R. K.; Ramasamy, K. J. Org. Chem. 1982,
47, 1962–1965. (b) Yokoyama, A.; Maruyama, T.; Tagami, K.; Masu,
H.; Katagiri, K.; Azumaya, I.; Yokozawa, T. Org. Lett. 2008, 10, 3207–
3210.
(19) Liu, Q.; Zhang, P.; Qing, A.; Lan, Y.; Shi, J.; Lu, M. Polymer 2006,
47, 6963–6969.
(20) (a) Baek, K.-Y.; Kamigaito, M.; Sawamoto, M. Macromolecules
2001, 34, 215–221. (b) Baek, K.-Y.; Kamigaito, M.; Sawamoto, M.
Macromolecules 2001, 34, 7629–7635.
1
1
1
991, 16, 111–172. (b) Kennedy, J. P.; Jacob, A. S. Acc. Chem. Res.
998, 31, 835–841. (c) Charleux, B.; Faust, R. Adv. Polym. Sci. 1999,
42, 1–69. (d) Aoshima, S.; Yoshida, T.; Kanazawa, A.; Kanaoka, S.
J. Polym. Sci., Part A: Polym. Chem. 2007, 45, 1801–1813.
e) Aoshima, S.; Kanaoka, S. Adv. Polym. Sci. 2008, 210, 169–208.
(
4) For example (review), see: (a) Matyjaszewski, K.; Xia, J. Chem.
Rev. 2001, 101, 2921–2990. (b) Kamigaito, M.; Ando, T.; Sawamoto, M.
Chem. Rev. 2001, 101, 3689–3746. (c) Tsarevsky, N. V.; Matyjaszewski,
K. Chem. Rev. 2007, 107, 2270–2299. (d) Kaimigaito, M.; Sato, K.
Macromolecules 2008, 41, 269–276. (e) Ouchi, M.; Terashima, T.;
Sawamoto, M. Acc. Chem. Res. 2008, 41, 1120–1132.
5) For selected examples, see: (a) Saunders, R. S.; Cohen, R. E.;
Wong, S. J.; Schrock, R. R. Macromolecules 1992, 25, 2055–2057.
(
b) Chang, J. Y.; Ji, H. J.; Han, M. J.; Rhee, S. B.; Cheong, K.; Yoon, M.
Macromolecules 1994, 27, 1376–1378. (c) Trollsas, M.; Hedrick, J. L.;
Mecerreyes, D.; Dubois, P.; J ꢀe r ^o me, R.; Ihre, H.; Hult, A. Macromo-
lecules 1998, 31, 2756–2763. (d) Hecht, S.; Ihre, H.; Fr ꢀe chet, J. M. J.
(21) Yokozawa, T.; Ogawa, M.; Sekino, A.; Sugi, R.; Yokoyama, A.
J. Am. Chem. Soc. 2002, 124, 15158–15159.