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COMMUNICATION
Journal Name
DOI: 10.1039/D0CC02962A
Visiting Scholar Scheme. We thank the referees for their
fruitful suggestions to improve the quality of this manuscript.
Conflicts of interest
There are no conflicts to declare.
Notes and references
1
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2
Fig. 3 Normalized degradation percentages of ABDA at 401 nm
in the presence of WP5⊃TPEPY nanoassemblies (a), and TPEPY
(
3
4
J. Gao, J. Li, W.-C. Geng, F.-Y. Chen, X. Duan, Z. Zheng, D. Ding
and D.-S. Guo, J. Am. Chem. Soc., 2018, 140, 4945−4953.
a) K. Hirakawa, M. Harada, S. Okazaki and Y. Nosaka, Chem.
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M. M. Cetin, J. A. Cooper, S. Allen, O. Anamimoghadam, E. A.
Scott, M. R. Wasielewski and J. F. Stoddart, J. Am. Chem. Soc.,
b) upon adding Fe3+ and EDTA under visible light irradiation.
Fluorescence emission spectra of WP5⊃TPEPY nanoassemblies
3
+
(
c), and TPEPY (d) upon adding Fe and EDTA. Inset:
3
+
Fluorescent images of WP5⊃TPEPY (Ⅰ), WP5⊃TPEPY+Fe
Ⅱ), WP5⊃TPEPY+Fe +EDTA (Ⅲ), TPEPY (Ⅳ), and
TPEPY+Fe (Ⅴ) (λex = 365 nm). [TPEPY] = 15 μM, [WP5] = 15
μM, [Fe ] = 0.18 mM, and [EDTA] = 4.50 mM.
3
+
(
3
+
2
019, 141, 12296−12304; d) W. Hu, T. He, H. Zhao, H. Tao, R.
3
+
Chen, L. Jin, J. Li, Q. Fan, W. Huang, A. Baev and P. N. Prasad,
Angew. Chem., Int. Ed., 2019, 131, 11222−11228.
1
generation.15
2
5 D. Wang, M. M. S. Lee, G. Shan, R. T. K. Kwok, J. W. Y. Lam, H.
role in the inhibition of O
3
+
Su, Y. Cai and B.-Z. Tang, Adv. Mater., 2018, 30, 1802105.
Subsequently, when EDTA, a strong chelator of Fe , was
6
D. Wang, H. Su, R. T. K. Kwok, X. Hu, H. Zou, Q. Luo, M. M. S.
added to the free TPEPY or WP5⊃TPEPY solution pre-treated
Lee, W. Xu, J. W. Y. Lam and B.-Z. Tang, Chem. Sci., 2018, 9,
3
+
1
2
with Fe , the O generation efficiency could be reversibly
3
685−3693.
recovered (Fig. 3a, 3b). What's more, for the WP5⊃TPEPY 7 a) F. Hu, S. Xu and B. Liu, Adv. Mater., 2018, 30, 1801350; b)
nanoassemblies, the fluorescence intensity could also be
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recovered, reaching to 90% of its original values (Fig. 3c).
8
9
1
Therefore, the reversible control of
2
O generation and
fluorescence emission of WP5⊃TPEPY supramolecular
3
+
nanoassemblies could be achieved via adding Fe and EDTA,
1
making it possible to qualitatively monitor the O
2
generation
efficiency by naked eye rather than using indicator.
In summary, a novel AIE-based smart singlet oxygen
generation system based on supramolecular strategy has been
1
successfully developed in aqueous phase, where the
O
2
generation is tunable. The strong host–guest combination 10 a) C. Chen, X. Ni, H.-W. Tian, Q. Liu, D.-S. Guo and D. Ding,
Angew. Chem., Int. Ed., 2020, DOI: 10.1002/anie.201916430;
between WP5 and TPEPY may greatly change the D–A
b) L. Shao, Y. Pan, B. Hua, S. Xu, G. Yu, M. Wang, B. Liu and F.
1
structure of the guest, and thus controllable O
2
generation
Int.
Ed.,
2020,
DOI:
could be achieved by conveniently changing the molar ratio
between the host and the guest molecule. Moreover, 11 a) X.-Y. Hu, X. Liu, W. Zhang, S. Qin, C. Yao, Y. Li, D. Cao, L.
1
Peng and L. Wang, Chem. Mater., 2016, 28, 3778−3788.
2
reversible control of O generation and fluorescence emission
1
2 a) H. Bakirci, A. L. Koner and W. M. Nau, J. Org. Chem., 2005,
of supramolecular nanoassemblies could be achieved through
adding Fe3+ and EDTA, making it possible to qualitatively
7
0, 9960−9966; b) K. Kim, N. Selvapalam, Y. H. Ko, K. M. Park,
D. Kim and J. Kim, Chem. Soc. Rev., 2007, 36, 267−279; c) Y.
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Acc. Chem. Res., 2012, 45, 1294−1308.
3 Y. Li, Q. Wu, M. Kang, N. Song, D. Wang and B.-Z. Tang,
Biomaterials, 2020, 232, 119749.
monitor the 1
O
2
generation efficiency by naked eye. The
present work provides a new strategy for the construction of
1
tunable
O
2
generation system based on simple
1
1
supramolecular strategy, which might have potential
applications in the fields of controlled photocatalysis and
regulated photodynamic therapy.
4 a) M. Zuo, W. Qian, T. Li, X.-Y. Hu, J. Jiang and L. Wang, ACS
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This work was supported by the National Natural Science
Foundation of China (No. 21572101, 21871136), and the
Natural Science Foundation of Jiangsu Province (No.
1
5169−15172.
1
5 P. A. Nikolaychuk and A. O. Kuvaeva, J. Chem. Educ., 2016, 93,
1267−1269.
4
| J. Name., 2012, 00, 1-3
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