Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 30, Issue 38, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202002701
Keywords
micromotors; organic sensors; photocatalysis; semiconducting polymers; visible light
Categories
Funding
- project Advanced Functional Nanorobots - EFRR [CZ.02.1.01/0.0/0.0/15_003/0000444]
- European Research Council (ERC) [BEGMAT-678462]
Ask authors/readers for more resources
Photosensitive micromotors that can be remotely controlled by visible light irradiation demonstrate great potential in biomedical and environmental applications. To date, a vast number of light-driven micromotors are mainly composed from costly heavy and precious metal-containing multicomponent systems, that limit the modularity of chemical and physical properties of these materials. Herein, a highly efficient photocatalytic micromotors based exclusively on a purely organic polymer framework-semiconducting sulfur- and nitrogen-containing donor-acceptor polymer, is presented. Thanks to precisely tuned molecular architecture, this material has the ability to absorb visible light due to a conveniently situated energy gap. In addition, the donor-acceptor dyads within the polymer backbone ensure efficient photoexcited charge separation. Hence, these polymer-based micromotors can move in aqueous solutions under visible light illumination via a self-diffusiophoresis mechanism. Moreover, these micromachines can degrade toxic organic pollutants and respond to an increase in acidity of aqueous environments by instantaneous colour change. The combination of autonomous motility and intrinsic fluorescence enables these organic micromotors to be used as colorimetric and optical sensors for monitoring of the environmental aqueous acidity. The current findings open new pathways toward the design of organic polymer-based micromotors with tuneable band gap architecture for fabrication of self-propelled microsensors for environmental control and remediation applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available