Research

Coacervates, Polyelectrolyte Complexes, and Multilayers

Relevant Publications:

  • Danielsen, S. P. O. Chemical Compatibilization, Macro-, and Microphase Separation of Heteroassociative Polymers. Macromolecules. 2023, 56, 6527–6542. DOI: 10.1021/acs.macromol.3c00864
  • Danielsen, S. P. O.; Semenov, A. N.; Rubinstein, M. Phase Separation and Gelation in Solutions of Heteroassociative Polymers. Macromolecules. 2023, 56, 5661–5677. DOI: 10.1021/acs.macromol.3c00854
  • Danielsen, S. P. O.; Thompson, B. J; Fredrickson, G. H.;  Nguyen, T.-Q.; Bazan, G. C.; Segalman, R. A. Ionic Tunability of Conjugated Polyelectrolyte Solutions. Macromolecules. 2022, 55, 3437–3448. DOI:10.1021/acs.macromol.2c00178
  • Lee, M. L.; Rawlings, D.; Danielsen, S. P. O.; Kennard, R. M.; Chabinyc, M. L.; Segalman, R. A. Aqueous Formulation of Concentrated Semiconductive Fluid Using Polyelectrolyte Complexation. ACS Macro Lett. 2021, 10, 1008–1014. DOI:10.1021/acsmacrolett.1c00354
  • Danielsen, S. P. O.; Panyukov, S.; Rubinstein, M. Ion Pairing and the Structure of Gel Coacervates. Macromolecules 2020, 53, 9420–9442. DOI:10.1021/acs.macromol.0c01360.
  • Danielsen, S. P. O.; McCarty, J.; Shea, J.-E.; Delaney, K. T.; Fredrickson, G. H. Small Ion Effects on Self-Coacervation in Block Polyampholytes. J. Chem. Phys. 2019, 151, 034904. DOI:10.1063/1.5109045
  • Danielsen, S. P. O.; McCarty, J.; Shea, J.-E.; Delaney, K. T.; Fredrickson, G. H. Molecular Design of Self-Coacervation Phenomena in Block Polyampholytes. Proc. Nat. Acad. U. S. A. 2019, 116, 8224–8232. DOI:10.1073/pnas.1900435116
  • McCarty, J.; Delaney, K. T.; Danielsen, S. P. O.; Fredrickson, G. H.; Shea, J.-E. Complete Phase Diagram for Liquid–Liquid Phase Separation of Intrinsically Disordered Proteins. J. Phys. Chem. Lett. 2019, 10, 1644–1652. DOI:10.1021/acs.jpclett.9b00099
  • Danielsen, S. P. O.; Nguyen, T.-Q.; Fredrickson, G. H.; Segalman, R. A. Complexation of a Conjugated Polyelectrolyte and Impact on Optoelectronic Properties. ACS Macro Lett. 2019, 8, 88–94. DOI:10.1021/acsmacrolett.8b00924
  • Polak, R.; Bradwell, G.; Gilbert, J.; Danielsen, S.; Beppu, M.; Cohen, R.; Rubner, M. Optimization of Amine-Rich Multilayer Thin Films for the Capture and Quantification of Prostate-Specific Antigen. Langmuir. 2015, 31, 5479–5488. DOI:10.1021/acs.langmuir.5b00443
Mucus & Biological Fluids

Relevant Publications:

  • Fazelpour, F.; Rouillard, K. R.; Markovetz, M. R.; Bowman, D.; Plott, L.; Kissner, W. J.; Felix, J.; Esther, C.; Danielsen, S. P. O.; Rubinstein, M.; Hill, D. B. Impact of DNA on the Rheological Properties of Mucus. J. Cyst. Fibros. 2024, 23, S128.
  • Hill, D. B.; Tang, Q.; Fazelpour, F.; Raihan, M.; King, S.; Kissner, W. J.; Esther, C.; Button, B.; Markovetz, M. R.; Danielsen, S. P. O.; Rubinstein, M. The Mucus–Air Interface in Health and Disease. J. Cyst. Fibros. 2024, 23, S118-119.
  • Livraghi-Butrico, A.; Grubb, B. R.; Carpenter, J.; Danielsen, S. P. O.; Markovetz, M.; Chen, G.; Radicioni, G.; Saldana-Montavon, A.; Sun, L.; Gutay, M.; Vilar, J.; Ehre, C.; Thornton, D.; Cowley, D.; O’Neal, W. K.; Hill, D. B.; Button, B.; Rubinstein, M.; Boucher, R. C. Why are mucins so gigantic, and is it rational to sever them to aid mucus clearance? J. Cyst. Fibros. 2022, 21, S235-S236.
Ionic Liquids and Inhomogeneous Electrolytes

Relevant Publications:

  • Bayles, A. V.; Valentine, C. S.; Überrück, T.; Danielsen, S. P. O.; Han, S.; Helgeson, M. E.; Squires, T. M. Anomalous Solute Diffusivity in Ionic Liquids: Label-Free Visualization and Physical Origins. Phys. Rev. X. 2019, 9, 011048. DOI:10.1103/PhysRevX.9.011048
  • Whitley, J. W.; Horne, W. J.; Danielsen, S. P. O.; Shannon, M. S.; Marshall, J. E.; Hayward, S. H.; Gaddis, C. J.; Bara, J. E. Enhanced Photopolymerization Rate & Conversion of 1-Vinylimidazole in the Presence of Lithium Bistriflimide. Eur. Polym. J. 2014, 60, 92–97. DOI:10.1016/j.eurpolymj.2014.08.015
  • Shannon, M. S.; Tedstone, J. M.; Danielsen, S. P. O.; Hindman, M. S.; Bara, J. E. Properties and Performance of Ether-Functionalized Imidazoles as Physical Solvents for CO2 Separations. Energy Fuels. 2013, 27, 3349–3357. DOI:10.1021/ef400362b
  • Garist, I.V.; Verevkin, S.P.; Samarov, A.A.; Bara, J.E.; Hindman, M.S.; Danielsen, S. P. O. Building Blocks for Ionic Liquids: Vapor Pressures and Vaporization Enthalpies of Alkoxy Derivatives of Imidazole and Benzimidazole. Ind. Eng. Chem. Res. 2012, 51, 15517–15524. DOI:10.1021/ie302383t
  • Shannon, M.S.; Hindman, M.S.; Danielsen, S. P. O.; Tedstone, J.M; Gilmore, R.D.; Bara, J. E. Properties of Alkylbenzimidazoles for CO2 and SO2 Capture and Comparisons to Ionic Liquids. Sci. China: Chem. 2012, 55, 1638–1647. DOI:10.1007/s11426-012-4661-3
  • Garist, I.V.; Verevkin, S.P.; Bara, J. E.; Hindman, M. S.; Danielsen, S. P. O. Building Blocks for Ionic Liquids: Vapor Pressures and Vaporization Enthalpies for 1-(n-Alkyl)-Benzimidazoles. J. Chem. Eng. Data. 2012, 57, 1803–1809. DOI:10.1021/je300312c
  • Shannon, M.S.; Tedstone, J.M; Danielsen, S. P. O.; Bara, J. E. Fractional Free Volume as the Basis of Gas Solubility & Selectivity in Imidazolium-Based Ionic Liquids. Ind. Eng. Chem. Res. 2012, 51, 5565–5576. DOI:10.1021/ie202916e
  • Shannon, M.S.; Tedstone, J.M; Danielsen, S. P. O.; Bara, J. E. Evaluation of Alkylimidazoles as Physical Solvents for CO2/CH4 Separation. Ind. Eng. Chem. Res. 2012, 51, 515–522. DOI:10.1021/ie202111k
Chain Architecture, Conformations, & Sequence

Relevant Publications:

  • Zhang, Y.; Danielsen, S. P. O.; Popere, B. C.; Heitsch, A. T.; Li, M.; Trefonas, P.; Segalman, R. A.; Katsumata, R. Discrete, Shallow Doping of Semiconductors via Cylinder-Forming Block Copolymer Self-Assembly. Macromol. Mater. Eng. 2022, 2200155. DOI: 10.1002/mame.202200155
  • Danielsen, S. P. O.; Bridges, C. R.; Segalman, R. A. Chain Stiffness of Donor–Acceptor Conjugated Polymers in Solution. Macromolecules. 2022, 55, 437–449. DOI:10.1021/acs.macromol.1c02229
  • Yu, B.; Danielsen, S. P. O.; Yang, K.-C.; Ho, R.-M.; Walker, L. M.; Segalman, R. A. Insensitivity of Sterically Defined Helical Chain Conformations to Solvent Quality in Dilute Solution. ACS Macro Lett. 2020, 9, 849–854. DOI:10.1021/acsmacrolett.0c00293
  • Patterson, A. L.; Yu, B.; Danielsen, S. P. O.; Davidson, E. C.; Fredrickson, G. H.; Segalman, R. A. Monomer Sequence Effects on Interfacial Width and Mixing in Self-Assembled Diblock Copolymers. Macromolecules. 2020, 53, 3262–3272. DOI:10.1021/acs.macromol.9b02426
  • Danielsen, S. P. O.; Davidson, E. C.; Fredrickson, G. H.; Segalman, R. A. Absence of Electrostatic Rigidity in Conjugated Polyelectrolytes with Pendant Charges. ACS Macro Lett. 2019, 8, 1147–1152. DOI:10.1021/acsmacrolett.9b00551
  • Danielsen, S. P. O.; McCarty, J.; Shea, J.-E.; Delaney, K. T.; Fredrickson, G. H. Molecular Design of Self-Coacervation Phenomena in Block Polyampholytes. Proc. Nat. Acad. U. S. A. 2019, 116, 8224–8232. DOI:10.1073/pnas.1900435116
  • McCarty, J.; Delaney, K. T.; Danielsen, S. P. O.; Fredrickson, G. H.; Shea, J.-E. Complete Phase Diagram for Liquid–Liquid Phase Separation of Intrinsically Disordered Proteins. J. Phys. Chem. Lett. 2019, 10, 1644–1652. DOI:10.1021/acs.jpclett.9b00099
  • Yu, B.; Danielsen, S. P. O.; Davidson, E. C.; Patterson, A. L.; Segalman, R. A. Effects of Helical Chain Shape on Lamellae-Forming Block Copolymer Self-Assembly. Macromolecules. 2019, 52, 2560–2568. DOI:10.1021/acs.macromol.9b00211
  • Patterson, A. L.; Danielsen, S. P. O.; Yu, B.; Davidson, E. C.; Fredrickson, G. H.; Segalman, R. A. Sequence Effects on Block Copolymer Self-Assembly and Segregation Strength Utilizing Sequence-Defined Polypeptoids. Macromolecules. 2019, 52, 1277–1286. DOI:10.1021/acs.macromol.8b02298
  • Hall, C. C.; Zhou, C.; Danielsen, S. P. O.; Lodge, T. P. Formation of Multicompartment Ion Gels by Stepwise Self-Assembly of a Thermoresponsive ABC Triblock Terpolymer in an Ionic Liquid. Macromolecules. 2016, 49, 2298–2306. DOI:10.1021/acs.macromol.5b02789
Conjugated Polymers

Relevant Publications:

  • Danielsen, S. P. O.; Thompson, B. J; Fredrickson, G. H.;  Nguyen, T.-Q.; Bazan, G. C.; Segalman, R. A. Ionic Tunability of Conjugated Polyelectrolyte Solutions. Macromolecules. 2022, 55, 3437–3448. DOI:10.1021/acs.macromol.2c00178
  • Danielsen, S. P. O.; Bridges, C. R.; Segalman, R. A. Chain Stiffness of Donor–Acceptor Conjugated Polymers in Solution. Macromolecules. 2022, 55, 437–449. DOI:10.1021/acs.macromol.1c02229
  • Rawlings, D.; Lee, D.; Kim, J.; Magdău, I.-B.; Pace, G.; Richardson, P. M.; Thomas, E. M.; Danielsen, S. P. O.; Tolbert, S. H.; Miller, T. F.; Seshadri, R.; Segalman, R. A. Li+ and Oxidant Addition to Control Ionic and Electronic Conduction in Ionic Liquid Functionalized Conjugated Polymers. Chem. Mater. 2021, 33, 6464–6474. DOI:10.1021/acs.chemmater.1c01811
  • Lee, M. L.; Rawlings, D.; Danielsen, S. P. O.; Kennard, R. M.; Chabinyc, M. L.; Segalman, R. A. Aqueous Formulation of Concentrated Semiconductive Fluid Using Polyelectrolyte Complexation. ACS Macro Lett. 2021, 10, 1008–1014. DOI:10.1021/acsmacrolett.1c00354
  • Danielsen, S. P. O.; Davidson, E. C.; Fredrickson, G. H.; Segalman, R. A. Absence of Electrostatic Rigidity in Conjugated Polyelectrolytes with Pendant Charges. ACS Macro Lett. 2019, 8, 1147–1152. DOI:10.1021/acsmacrolett.9b00551
  • Danielsen, S. P. O.; Nguyen, T.-Q.; Fredrickson, G. H.; Segalman, R. A. Complexation of a Conjugated Polyelectrolyte and Impact on Optoelectronic Properties. ACS Macro Lett. 2019, 8, 88–94. DOI:10.1021/acsmacrolett.8b00924
  • Danielsen, S. P. O.; Sanoja, G. E.; McCuskey, S. R.; Hammouda, B.; Bazan, G. C.; Fredrickson, G. H.; Segalman, R. A. Mixed Conductive Soft Solids by Electrostatically Driven Network Formation of a Conjugated Polyelectrolyte. Chem. Mater. 2018, 30, 1277–1286. DOI:10.1021/acs.chemmater.7b05303
Networks and Gels

Relevant Publications:

  • Danielsen, S. P. O. “Characterization of Hydrogels” in Natural and Synthetic Hydrogels – Rational Design, Characterizations and Applications; Narain, R., Ed.; Elsevier, 2024.
  • Wei, S.; Smith-Jones, J.; Lalisse, R. F.; Hestenes, J.; Chen, D.; Danielsen, S. P. O.; Bell, R. C.; Churchill, E. M.; Munich, N.; Marbella, L.; Gutierrez, O.; Rubinstein, M.; Nelson, A.; Campos, L. M. Light-Induced Living Polymer Networks with Adaptive Functional Properties. Adv. Mater. 2024, 2313961. DOI: 10.1002/adma.202313961
  • Danielsen, S. P. O. Chemical Compatibilization, Macro-, and Microphase Separation of Heteroassociative Polymers. Macromolecules. 2023, 56, 6527–6542. DOI: 10.1021/acs.macromol.3c00864
  • Danielsen, S. P. O.; Semenov, A. N.; Rubinstein, M. Phase Separation and Gelation in Solutions of Heteroassociative Polymers. Macromolecules. 2023, 56, 5661–5677. DOI: 10.1021/acs.macromol.3c00854
  • Danielsen, S. P. O.; Beech, H. K.; Wang, S.; El Zaatari, B. M.; Wang, X.; Sapir, L.; Ouchi, T.; Wang, Z.; Johnson, P. N.; Hu, Y.; Lundberg, D. J.; Stoychev, G.; Craig, S. L.; Johnson, J. A.; Kalow, J. A.; Olsen, B. D.; Rubinstein, M. Molecular Characterization of Polymer Networks. Chem Rev. 2021, 121, 5042–5092. DOI: 10.1021/acs.chemrev.0c01304