Abstract
Precise control of the self-assembly of selected components within complex mixtures is a challenging goal whose realization is important for fabricating novel nanomaterials. Herein we show that by decorating the surfaces of metallic nanoparticles with differently substituted azobenzenes, it is possible to modulate the wavelength of light at which the self-assembly of these nanoparticles is induced. Exposing a mixture of two types of nanoparticles, each functionalized with a different azobenzene, to UV or blue light induces the selective self-assembly of only one type of nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates, and the simultaneous self-assembly of nanoparticles of the other type. By placing both types of azobenzenes on the same nanoparticles, we created unique materials ("frustrated" nanoparticles) whose self-assembly is induced irrespective of the wavelength of the incident light. A guiding light: Nanoparticles functionalized with variously substituted azobenzenes self-assemble into aggregates in response to different wavelengths of light. Exposing a mixture of differently sized nanoparticles, each functionalized with a different azobenzene, to light of a specific color (ultraviolet or blue) induces the selective self-assembly of only one type of the nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates and the simultaneous self-assembly of nanoparticles of the other type.
| Original language | English |
|---|---|
| Pages (from-to) | 12394-12397 |
| Number of pages | 4 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 54 |
| Issue number | 42 |
| DOIs | |
| Publication status | Published - Oct 1 2015 |
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Keywords
- azo compounds
- nanoparticles
- photochemistry
- self-assembly
- stimuli-responsive materials
ASJC Scopus subject areas
- Chemistry(all)
- Catalysis
Cite this
Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes. / Manna, Debasish; Udayabhaskararao, Thumu; Zhao, Hui; Klajn, Rafal.
In: Angewandte Chemie - International Edition, Vol. 54, No. 42, 01.10.2015, p. 12394-12397.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes
AU - Manna, Debasish
AU - Udayabhaskararao, Thumu
AU - Zhao, Hui
AU - Klajn, Rafal
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Precise control of the self-assembly of selected components within complex mixtures is a challenging goal whose realization is important for fabricating novel nanomaterials. Herein we show that by decorating the surfaces of metallic nanoparticles with differently substituted azobenzenes, it is possible to modulate the wavelength of light at which the self-assembly of these nanoparticles is induced. Exposing a mixture of two types of nanoparticles, each functionalized with a different azobenzene, to UV or blue light induces the selective self-assembly of only one type of nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates, and the simultaneous self-assembly of nanoparticles of the other type. By placing both types of azobenzenes on the same nanoparticles, we created unique materials ("frustrated" nanoparticles) whose self-assembly is induced irrespective of the wavelength of the incident light. A guiding light: Nanoparticles functionalized with variously substituted azobenzenes self-assemble into aggregates in response to different wavelengths of light. Exposing a mixture of differently sized nanoparticles, each functionalized with a different azobenzene, to light of a specific color (ultraviolet or blue) induces the selective self-assembly of only one type of the nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates and the simultaneous self-assembly of nanoparticles of the other type.
AB - Precise control of the self-assembly of selected components within complex mixtures is a challenging goal whose realization is important for fabricating novel nanomaterials. Herein we show that by decorating the surfaces of metallic nanoparticles with differently substituted azobenzenes, it is possible to modulate the wavelength of light at which the self-assembly of these nanoparticles is induced. Exposing a mixture of two types of nanoparticles, each functionalized with a different azobenzene, to UV or blue light induces the selective self-assembly of only one type of nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates, and the simultaneous self-assembly of nanoparticles of the other type. By placing both types of azobenzenes on the same nanoparticles, we created unique materials ("frustrated" nanoparticles) whose self-assembly is induced irrespective of the wavelength of the incident light. A guiding light: Nanoparticles functionalized with variously substituted azobenzenes self-assemble into aggregates in response to different wavelengths of light. Exposing a mixture of differently sized nanoparticles, each functionalized with a different azobenzene, to light of a specific color (ultraviolet or blue) induces the selective self-assembly of only one type of the nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates and the simultaneous self-assembly of nanoparticles of the other type.
KW - azo compounds
KW - nanoparticles
KW - photochemistry
KW - self-assembly
KW - stimuli-responsive materials
UR - http://www.scopus.com/inward/record.url?scp=84943199006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84943199006&partnerID=8YFLogxK
U2 - 10.1002/anie.201502419
DO - 10.1002/anie.201502419
M3 - Article
C2 - 25959725
AN - SCOPUS:84943199006
VL - 54
SP - 12394
EP - 12397
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 42
ER -