期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 109, 期 36, 页码 14332-14336出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1213055109
关键词
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资金
- NSF [CHE-1048404]
- DOE Light-Material Interactions in Energy Conversion Energy Frontier Research Center [DE-SC0001293]
- Resnick Institute
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1212767] Funding Source: National Science Foundation
The reduced chain entanglement of brush polymers over their linear analogs drastically lowers the energetic barriers to reorganization. In this report, we demonstrate the rapid self-assembly of brush block copolymers to nanostructures with photonic bandgaps spanning the entire visible spectrum, from ultraviolet (UV) to near infrared (NIR). Linear relationships were observed between the peak wavelengths of reflection and polymer molecular weights. This work enables bottom-up fabrication of photonic crystals with application-tailored bandgaps, through synthetic control of the polymer molecular weight and the method of self-assembly. These polymers could be developed into NIR-reflective paints, to combat the urban heat island effect due to NIR photon thermalization.
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