Communication
ChemComm
was also helpful in improving the gCPL values of (+)-PEO114-b-
P(D20Q11)/K13[Eu(SiW11O ) ] (Fig. S19, ESI†).
39 2
6 J. Kumar, B. Marydasan, T. Nakashima, T. Kawai and J. Yuasa, Chem.
Commun., 2016, 52, 9885.
7
F. Zinna, U. Giovanella and L. D. Bari, Adv. Mater., 2015, 27, 1791.
Furthermore, gCPL was closely correlated to the molar content
and configurations of the Q groups. As summarized in Fig. 2d,
for the (+)-PEO114-b-(D Q )/EuW assemblies, the maximum gCPL
8 U. Tohgha, K. K. Deol, A. G. Porter, S. G. Bartko, J. K. Choi,
B. M. Leonard, K. Varga, J. Kubelka, G. Muller and M. Balaz,
ACS Nano, 2013, 7, 11094.
x
y
10
9
M. Naito, K. Iwahori, A. Miura, M. Yamane and I. Yamashita, Angew.
Chem., Int. Ed., 2010, 49, 7006.
values at both 587 nm and 596 nm first increased along with the
Q molar content, respectively reaching a maximum of À2.1 Â 10 K. Nakamura, S. Furumi, M. Takeuchi, T. Shibuya and K. Tanaka,
À2
À2
J. Am. Chem. Soc., 2014, 136, 5555.
1
0
and +2.3 Â 10 when the Q molar content was 35.46%,
1
1 J. Z. Liu, H. Su, L. M. Meng, Y. H. Zhao, C. M. Deng, J. C. Y. Ng, P. Lu,
M. Faisal, J. W. Y. Lam, X. H. Huang, H. K. Wu, K. S. Wong and
B. Z. Tang, Chem. Sci., 2012, 3, 2737.
2 K. Watanabe, T. Sakamoto, M. Taguchi, M. Fujiki and T. Nakano,
Chem. Commun., 2011, 47, 10996.
3 B. A. San Jose, J. L. Yan and K. Akagi, Angew. Chem., Int. Ed., 2014,
53, 10641.
4 M. Inouye, K. Hayashi, Y. Yonenaga, T. Itou, K. Fujimoto, T.-a.
Uchida, M. Iwamura and K. Nozaki, Angew. Chem., Int. Ed., 2014,
À3
and then gradually fell to the magnitude of 10 . The gCPL of (À)-
PEO114-b-(D
values due to the different configurations of the chiral group
Fig. 2d). In both cases, the optimum molar content of the chiral
x y
Q )/EuW10 showed similar trends but with different
1
1
1
(
III
Q pendants was B30%. Below this value, Eu was surrounded
by too many achiral DMAEMA pendants, which may weaken the
induction power of the Q pendants; whereas a higher content of
53, 14392.
bulky Q pendants may decrease the mobility of the polymer and 15 Z. C. Shen, T. Y. Wang, L. Shi, Z. Y. Tang and M. H. Liu, Chem. Sci.,
III
2015, 6, 4267.
thus prevent their effective access to Eu .
1
6 K. Okano, M. Taguchi, M. Fujiki and T. Yamashita, Angew. Chem.,
Int. Ed., 2011, 50, 12474.
In summary, chiral supramolecular assemblies composed of
chiral neutral–cationic polymers and anionic Eu-containing 17 G. X. Xu, S. W. Zeng, B. T. Zhang, M. T. Swihart, K.-T. Yong and
P. N. Prasad, Chem. Rev., 2016, 116, 12234.
POMs were prepared through non-covalent electrostatic inter-
1
1
8 L. Shang, S. J. Dong and G. U. Nienhaus, Nano Today, 2011, 6, 401.
9 Y. Y. Duan, L. Han, J. L. Zhang, S. Asahina, Z. H. Huang, L. Shi, B. Wang,
Y. Y. Cao, Y. Yao, L. G. Ma, C. Wang, R. K. Dukor, L. Sun, C. Jiang, Z. Y.
Tang, L. A. Nafie and S. A. Che, Angew. Chem., Int. Ed., 2015, 54, 15170.
0 N. Shi, J. Zhang and X. H. Wan, Acta Polym. Sin., 2016, 12, 1645.
1 F. Zinna and L. Di Bari, Chirality, 2015, 27, 1.
actions in a facile way. Besides energy transfer, chirality transfer
in both the ground and excited states was achieved. Influenced
by the chiral pendants of the polymers, the chiral torsion of the
2
2
ligand and the twisted angle deviated from 451 in the prefer-
III
ential direction of the square antiprismatic coordinated Eu lays 22 R. Carr, N. H. Evans and D. Parker, Chem. Soc. Rev., 2012, 41, 7673.
2
2
3 W. L. Chen, H. Q. Tan and E. B. Wang, J. Coord. Chem., 2012, 65, 1.
4 J. W. Zhang, J. H. Luo, P. M. Wang, B. Ding, Y. C. Huang, Z. L. Zhao,
J. Zhang and Y. G. Wei, Inorg. Chem., 2015, 54, 2551.
the foundation of generating CPL. The coupling between the
chiral chromophores and emission center further contributes to
the CPL. The CPL spectra could be enhanced to the magnitude of 25 B. Zhang, W. M. Guan, S. M. Zhang, B. Li and L. X. Wu, Chem.
À2
Commun., 2016, 52, 5308.
6 Z. H. Li, Chin. Phys. C, 2013, 37, 108002.
10
by salt. Bulky enough chiral pendants, a proper conforma-
2
2
tion and configuration of the chiral pendants, a balance between
chiral center content and chain flexibility, as well as the for-
mation of aggregates exert influences on the final gCPL values. As
CPL and CD are complementary and CPL in our work is more
sensitive to the environment than CD, this straightforward
method may pave an avenue for discovering novel CPL materials.
This work was supported by the National Natural Science
7 Z. H. Li, Z. H. Wu, G. Mo, X. Q. Xing and P. Liu, Instrum. Sci.
Technol., 2014, 42, 128.
8 H. B. Wei, S. M. Du, Y. Liu, H. X. Zhao, C. Y. Chen, Z. B. Li, J. Lin,
Y. Zhang, J. Zhang and X. H. Wan, Chem. Commun., 2014, 50, 1447.
9 H. B. Wei, J. L. Zhang, N. Shi, Y. Liu, B. Zhang, J. Zhang and
X. H. Wan, Chem. Sci., 2015, 6, 7201.
0 R. Ballardini, Q. G. Mulazzani, M. Venturi, F. Bolletta and V. Balzani,
Inorg. Chem., 1984, 23, 300.
1 W. D. Horrocks and D. R. Sudnick, J. Am. Chem. Soc., 1979, 101, 334.
2
2
3
3
Foundation of China (grant numbers 51373001 and 51673002). 32 N. Shi, Y. Guan, J. Zhang and X. H. Wan, RSC Adv., 2015, 5, 34900.
3
3
3 S. M. Han and N. Purdie, Anal. Chem., 1986, 58, 455.
4 O. Julinek, M. Krupicka, W. Lindner and M. Urbanova, Phys. Chem.
Chem. Phys., 2010, 12, 11487.
We appreciate Prof. Zhiyong Tang’s supports for the CPL
measurements.
3
5 J. I. Bruce, D. Parker, S. Lopinski and R. D. Peacock, Chirality, 2002,
14, 562.
Notes and references
36 S. Di Pietro and L. Di Bari, Inorg. Chem., 2012, 51, 12007.
37 T. Yamase, Handbook on the Physics and Chemistry of Rare Earths,
1
2
3
J. P. Riehl and F. S. Richardson, Chem. Rev., 1986, 86, 1.
K. Okutani, K. Nozaki and M. Iwamura, Inorg. Chem., 2014, 53, 5527. 38 T. Yamase, T. Ozeki and K. Ueda, Acta Crystallogr., Sect. C: Struct.
B. Kunnen, C. Macdonald, A. Doronin, S. Jacques, M. Eccles and
I. Meglinski, J. Biophotonics, 2015, 8, 317.
F. S. Richardson and J. P. Riehl, Chem. Rev., 1977, 77, 773.
R. Carr, R. Puckrin, B. K. McMahon, R. Pal, D. Parker and L.-O. 40 J. Zhang, Y. Liu, Y. Li, H. X. Zhao and X. H. Wan, Angew. Chem., Int.
Pålsson, Methods Appl. Fluoresc., 2014, 2, 024007. Ed., 2012, 51, 4598.
Elsevier B. V., 2009, vol. 39, pp. 301–304.
Chem., 1993, 49, 1572.
39 B. S. Bassil, M. H. Dickman, B. von der Kammer and U. Kortz, Inorg.
Chem., 2007, 38, 2452.
4
5
Chem. Commun.
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