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COMMUNICATION
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Figure 3. TEM images of the tubular polymersomes of PEG113-b-PFAZO78 formed in the
water/dioxane (0.6/1.0, v/v; initial concentration: 1.0 mg/mL) before and after light
irradiation (a)(b)(c): (a) initial aggregates; (b) aggregates after 532 nm green light
irradiation for 5 min (trans-to-cis isomerization); (c) aggregates after 405 nm blue light
irradiation for 5 min (cis-to-trans isomerization), treating with hydrazine hydrate for
different time (d) (e) (f): (d) initial aggregates; (e) aggregates in the presence of hydrazine
hydrate for 3 h; (f) aggregates in the presence of hydrazine hydrate for 20 h.
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instability of the tubular polymersomes and subsequent
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In summary, we have reported the fabrication of multi- 10. (a) G. Wang, X. Tong and Y. Zhao, Macromolecules, 2004, 37,
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911-8917; (b) J. Wu, B. Xu, Z. Liu, Y. Yao, Q. Zhuang and S. Lin,
morphological tubular polymersomes including tadpole-like,
smooth, needle-like and bead-like tubular polymersomes via
direct self-assembly of amphiphilic azobenzene-containing
block copolymers. We observed that the shape transformation
of those tubular polymersomes can be facilely and tuned by
changing the chemical structure of azobenzenes or adjusting
the water content. In addition, the tubular polymersomes
showed light and redox dual-responsive behaviours, which
could also induce the shape transformation. These novel smart
tubular polymersomes show promising potential applications in
stimuli-responsive nanomaterials such as specific switching
devices and polymeric nano-vehicles for loading cargo with
triggering release. More research on these tubular
polymersomes will be of great necessity.
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This work was supported by the National Science Foundation
of China (21871202, 21925107), the Priority Academic Program
Development of Jiangsu Higher Education Institutions (PAPD),
the Program of Innovative Research Team of Soochow
University and Collaborative Innovation Center of Suzhou Nano
Science and Technology.
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Conflicts of interest
There are no conflicts to declare.
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