The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Synthesis of Isocyanate-Based Brush Block Copolymers and Their Rapid Self-Assembly to Infrared-Reflecting Photonic Crystals
Abstract
The synthesis of rigid-rod, helical isocyanate-based macromonomers was achieved through the polymerization of hexyl isocyanate and 4-phenylbutyl isocyanate, initiated by an exo-norbornene functionalized half-titanocene complex. Sequential ruthenium-mediated ring-opening metathesis polymerization of these macromonomers readily afforded well-defined brush block copolymers, with precisely tunable molecular weights ranging from high (1512 kDa) to ultrahigh (7119 kDa), while maintaining narrow molecular weight distributions (PDI = 1.08-1.39). The self-assembly of these brush block copolymers to solid thin-films and their photonic properties were investigated. Due to the rigid architecture of these novel polymeric materials, they rapidly self-assemble through simple controlled evaporation to photonic crystal materials that reflect light from the ultra-violet, through the visible, to the near-infrared. The wavelength of reflectance is linearly related to the brush block copolymer molecular weight, allowing for predictable tuning of the band gap through synthetic control of the polymer molecular weight. A combination of scanning electron microscopy and optical modeling was employed to explain the origin of reflectivity.
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Self-citationImpact of urbanization and land-use change on climate
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Metadata
- Authors
- Miyake, G. M., Weitekamp, R. A., Piunova, V. A., & Grubbs, R. H.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-08-14
- Volume
- 134
- Issue
- 34
- Pages
- 14249-14254
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2334839322
- Cited by
- 265
- References
- 44
- FWCI
- 7.98
- Type
- journal article
- Language
- en
- Open access
- closed
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- Miyake, G. M., Weitekamp, R. A., Piunova, V. A., & Grubbs, R. H. (2012). Synthesis of Isocyanate-Based Brush Block Copolymers and Their Rapid Self-Assembly to Infrared-Reflecting Photonic Crystals. Journal of the American Chemical Society. https://doi.org/10.1021/ja306430k
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