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High Energy Density in Azobenzene-based Materials for Photo-Thermal Batteries via Controlled Polymer Architecture and Polymer-Solvent Interactions

Jeong, Seung Pyo; Renna, Lawrence A.; Boyle, Connor J.; Kwak, Hyunwook S.; Harder, Edward; Damm, Wolfgang; Venkataraman, Dhandapani

 Customer publications

High Energy Density in Azobenzene-based Materials for Photo-Thermal Batteries via Controlled Polymer Architecture and Polymer-Solvent Interactions

Jeong, Seung Pyo; Renna, Lawrence A.; Boyle, Connor J.; Kwak, Hyunwook S.; Harder, Edward; Damm, Wolfgang; Venkataraman, Dhandapani

Energy densities of ~510 J/g (max: 698 J/g) have been achieved in azobenzene-based syndiotactic-rich poly(methacrylate) polymers. The processing solvent and polymer-solvent interactions are important to achieve morphologically optimal structures for high-energy density materials. This work shows that morphological changes of solid-state syndiotactic polymers, driven by different solvent…
Two-Step Delamination of Highly Charged, Vermiculite-like Layered Silicates via Ordered Heterostructures

Daab, Matthias; Rosenfeldt, Sabine; Kalo, Hussein; Stöter, Matthias; Bojer, Beate; Siegel, Renée; Förster, Stephan; Senker, Jürgen; Breu, Josef

 Customer publications

Two-Step Delamination of Highly Charged, Vermiculite-like Layered Silicates via Ordered Heterostructures

Daab, Matthias; Rosenfeldt, Sabine; Kalo, Hussein; Stöter, Matthias; Bojer, Beate; Siegel, Renée; Förster, Stephan; Senker, Jürgen; Breu, Josef

Because of strong Coulomb interactions, the delamination of charged layered materials becomes progressively more difficult with increasing charge density. For instance, highly charged sodium fluorohectorite (Na0.6Mg2.4Li0.6Si4O10F2, Na-Hec) cannot be delaminated directly by osmotic swelling in water because its layer charge exceeds the established limit for osmotic swelling of 0.55 per…
Identifying anisotropy in seemingly random CNT networks using terahertz techniques

Bârsan, Oana A.; He, Guoqiang; Alkorre, Hameda; Stiens, Johan; de With, Gijsbertus

 Customer publications

Identifying anisotropy in seemingly random CNT networks using terahertz techniques

Bârsan, Oana A.; He, Guoqiang; Alkorre, Hameda; Stiens, Johan; de With, Gijsbertus

Characterizing and understanding carbon nanotube (CNT)-based polymer composites plays a crucial role for the ability to customize their properties. The (an)isotropy of CNT networks inside a composite can have significant effects on the final material's properties. However, characterizing the (an)isotropy of seemingly random CNT networks can be difficult using standard…
Electron Paramagnetic Resonance Spectroscopic Study of Ascorbate Oxidase Immobilized on Mesoporous Silica Materials

Umamaheswari, V.; Zhou, Zhou; Pöppl, Andreas; Schindler, Torben; Unruh, Tobias; Hartmann, Martin

 Customer publications

Electron Paramagnetic Resonance Spectroscopic Study of Ascorbate Oxidase Immobilized on Mesoporous Silica Materials

Umamaheswari, V.; Zhou, Zhou; Pöppl, Andreas; Schindler, Torben; Unruh, Tobias; Hartmann, Martin

0, 2017, DOI:Visit the full articleBack to the overview
Inverting substitution patterns on amphiphilic cyclodextrins induces unprecedented formation of hexagonal columnar superstructures

Champagne, Pier-Luc; Ester, David; Zeeman, Michael; Zellman, Carson; Williams, Vance E.; Ling, Chang-Chun

 Customer publications

Inverting substitution patterns on amphiphilic cyclodextrins induces unprecedented formation of hexagonal columnar superstructures

Champagne, Pier-Luc; Ester, David; Zeeman, Michael; Zellman, Carson; Williams, Vance E.; Ling, Chang-Chun

Cyclodextrins (CDs) constitute a unique class of macrocycles that possess a truncated cone-shaped cavity. Chemical modifications with simple hydrophobic groups can generate amphiphilic derivatives capable of self-assembling into thermotropic liquid crystals. Without the help of introduced mesogenic functionalities, almost all known amphiphilic CDs form smectic mesophases. Here we report that…
An addressable packing parameter approach for reversibly tuning the assembly of oligo(aniline)-based supra-amphiphiles

Lyu, Wei; Alotaibi, Maha; Alexander Bell, O.; Watanabe, Kazuyoshi; Harniman, Robert; M. Mills, Benjamin; M. Seddon, Annela; E. Rogers, Sarah; M. King, Stephen; Yan, Wei; J. Faul, Charl F.

 Customer publications

An addressable packing parameter approach for reversibly tuning the assembly of oligo(aniline)-based supra-amphiphiles

Lyu, Wei; Alotaibi, Maha; Alexander Bell, O.; Watanabe, Kazuyoshi; Harniman, Robert; M. Mills, Benjamin; M. Seddon, Annela; E. Rogers, Sarah; M. King, Stephen; Yan, Wei; J. Faul, Charl F.

Chemical Science, 2018, vol 9, 19, pp. 4392-4401DOI:10.1039/C8SC00068AVisit the full articleBack to the overview
Programmed Self-Assembly of Hierarchical Nanostructures through Protein–Nanoparticle Coengineering

Mout, Rubul; Yesilbag Tonga, Gulen; Wang, Li-Sheng; Ray, Moumita; Roy, Trinava; Rotello, Vincent M.

 Customer publications

Programmed Self-Assembly of Hierarchical Nanostructures through Protein–Nanoparticle Coengineering

Mout, Rubul; Yesilbag Tonga, Gulen; Wang, Li-Sheng; Ray, Moumita; Roy, Trinava; Rotello, Vincent M.

Hierarchical organization of macromolecules through self-assembly is a prominent feature in biological systems. Synthetic fabrication of such structures provides materials with emergent functions. Here, we report the fabrication of self-assembled superstructures through coengineering of recombinant proteins and nanoparticles. These structures feature a highly sophisticated level of multilayered…
Photoswitchable Nanomaterials Based on Hierarchically Organized Siloxane Oligomers

Zha, R. Helen; Vantomme, Ghislaine; Berrocal, José Augusto; Gosens, Ronald; Waal, Bas de; Meskers, Stefan; Meijer, E. W.

 Customer publications

Photoswitchable Nanomaterials Based on Hierarchically Organized Siloxane Oligomers

Zha, R. Helen; Vantomme, Ghislaine; Berrocal, José Augusto; Gosens, Ronald; Waal, Bas de; Meskers, Stefan; Meijer, E. W.

Materials with highly ordered molecular arrangements have the capacity to display unique properties derived from their nanoscale structure. Here, the synthesis and characterization of azobenzene (AZO)-functionalized siloxane oligomers of discrete length that form photoswitchable supramolecular materials are described. Specifically, synergy between phase segregation and azobenzene crystallization…
The UV filtering potential of drop-casted layers of frustules of three diatom species

Su, Yanyan; Lenau, Torben A.; Gundersen, Emil; Kirkensgaard, Jacob J. K.; Maibohm, Christian; Pinti, Jérôme; Ellegaard, Marianne

 Customer publications

The UV filtering potential of drop-casted layers of frustules of three diatom species

Su, Yanyan; Lenau, Torben A.; Gundersen, Emil; Kirkensgaard, Jacob J. K.; Maibohm, Christian; Pinti, Jérôme; Ellegaard, Marianne

Diatoms are in focus as biological materials for a range of photonic applications. Many of these applications would require embedding a multitude of diatoms in a matrix (e.g. paint, crème or lacquer); however, most studies on the photonic and spectral properties of diatoms frustules (silica walls) have been carried out…
Using block copolymer architecture to achieve sub-10 nm periods

Sun, Zhiwei; Zhang, Wenxu; Hong, Song; Chen, Zhenbin; Liu, Xiaohui; Xiao, Shuaigang; Coughlin, E. Bryan; Russell, Thomas P.

 Customer publications

Using block copolymer architecture to achieve sub-10 nm periods

Sun, Zhiwei; Zhang, Wenxu; Hong, Song; Chen, Zhenbin; Liu, Xiaohui; Xiao, Shuaigang; Coughlin, E. Bryan; Russell, Thomas P.

Using salt-doped polystyrene-b-poly(2-vinylpyridine) star shaped block copolymer as a model, we show that the architecture of (A-b-B)n type multi-arm star block copolymers enhances the ordering of the block copolymers, enabling the generation of nanostructures with microdomain periods less than 10 nm. The influence of the arm number on the order-to-disorder transition…
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