Detail publikace

Active Anion Delivery by Self-Propelled Microswimmers

MOHSEN BELADI, M. KLEIN, J. KHEZRI, B. WALDER, L. PUMERA, M.

Originální název

Active Anion Delivery by Self-Propelled Microswimmers

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Self-propelled micro- and nanomachines are at the forefront of materials research, branching into applications in biomedical science and environmental remediation. Cationic frameworks enabling the collection and delivery of anionic species (A(-)) are highly required, due to the large variety of lifethreatening pollutants, such as radioactive technetium and carcinogenic chromium, and medicines, such as dexamethasone derivatives with negative charges. However, such autonomous moving carriers for active transport of the anions have been barely discussed. A polymeric viologen (PV++)-consisting of electroactive bicationic subunits-is utilized in a tubular autonomous microswimmer to selectively deliver A(-) of different sizes and charge densities. The cargo loading is based on a facile anion exchange mechanism. The packed crystal structure of PV++ allows removal of an exceptionally high quantity of anions per one microswimmer (2.55 X 10(-13) mol anions per microswimmer), a critical factor often neglected regarding the real-world application of microswimmers. Notably, there was virtually no leakage of anions during the delivery process or upon keeping the loaded microswimmers under ambient conditions for at least 4 months. Multiple release mechanisms, compatible with different environments, including electrochemical, photochemical, and a metathesis reaction, with high efficiencies up to 98% are introduced. Such functional autonomous micromachines provide great promise for the next generation of functional materials for biomedical and environmental applications.

Klíčová slova

micromotors; viologen; anions; autonomous motion; cargo delivery; environmental remediation

Autoři

MOHSEN BELADI, M.; KLEIN, J.; KHEZRI, B.; WALDER, L.; PUMERA, M.

Vydáno

24. 3. 2020

Nakladatel

AMER CHEMICAL SOC

Místo

WASHINGTON

ISSN

1936-0851

Periodikum

ACS Nano

Ročník

14

Číslo

3

Stát

Spojené státy americké

Strany od

3434

Strany do

3441

Strany počet

8

URL

https://pubs.acs.org/doi/10.1021/acsnano.9b09525

BibTex

@article{BUT164100,
  author="Mousavi {Mohsen Beladi} and Jonas {Klein} and Bahareh {Khezri} and Lorenz {Walder} and Martin {Pumera}",
  title="Active Anion Delivery by Self-Propelled Microswimmers",
  journal="ACS Nano",
  year="2020",
  volume="14",
  number="3",
  pages="3434--3441",
  doi="10.1021/acsnano.9b09525",
  issn="1936-0851",
  url="https://pubs.acs.org/doi/10.1021/acsnano.9b09525"
}