Supramolecular Polymer Chemistry

Research output

Content available in repository 1986 2003 2005 2006 2007 2008 2009 2010 2018 2021 2022 2023 2024 2024

• 218 Article
• 31 Phd Thesis 1 (Research TU/e / Graduation TU/e)
• 23 Conference contribution
• 8 Meeting Abstract
• 22 More
  • 6 Patent publication
  • 6 EngD Thesis
  • 4 Chapter
  • 2 Poster
  • 2 Review article
  • 1 Inaugural/farewell speech
  • 1 Comment/Letter to the editor

Content available in repository

Content available in repository

Search results

• 2007

  Pakkende verbindingen: zelf-organiserende moleculen voor functionele materialen

  Sijbesma, R. P., 2007, Eindhoven: Technische Universiteit Eindhoven.

  Research output: Book/Report › Inaugural/farewell speech › Academic

  Open Access

  File
  173 Downloads (Pure)

• Probing selectivity of ultrasound induced chain scission in reversible coordination polymers

  Paulusse, J. M. J., Huijbers, J. P. J. & Sijbesma, R. P., 2007, Abstracts of Papers, 234th ACS National Meeting, Boston, MA, United States, August 19-23, 2007. p. POLY-062

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

• Reversible networks in supramolecular polymers

  Havermans - van Beek, D. J. M., 2007, Eindhoven: Technische Universiteit Eindhoven. 145 p.

  Research output: Thesis › Phd Thesis 1 (Research TU/e / Graduation TU/e)

  Open Access

  File

  • Supramolecular Polymer 100%
  • Copolymer 100%
  • Relaxation 85%
  • Hydrogen Bonding 71%
  • Polycaprolactone 66%
  1118 Downloads (Pure)

• Reversible switching of the sol- gel transition with ultrasound in rhodium(I) and iridium(I) coordination networks

  Paulusse, J. M. J., Beek, van, D. J. M. & Sijbesma, R. P., 2007, In: Journal of the American Chemical Society. 129, 8, p. 2392-2397

  Research output: Contribution to journal › Article › Academic › peer-review

  • Iridium 100%
  • Sol-Gel Transition 100%
  • Rhodium 100%
  • Chloroform 100%
  • Sol-Gel 100%
  137 Citations (Scopus)

  2 Downloads (Pure)

• Self-organized surfactants as templates for the mineralization of CaCO3

  Popescu, D. C., Smulders, M. M. J., Pichon, B., Bomans, P. H. H., Chebotareva, N., Sijbesma, R. P., Frederik, P. M. & Sommerdijk, N. A. J. M., 2007, In: PMSE Preprints. 96, p. 123-124

  Research output: Contribution to journal › Meeting Abstract › Academic

  • Surface Active Agent 100%
  1 Downloads (Pure)

• Supramolecular copolyesters with tunable properties

  Beek, van, D. J. M., Gillissen, M. A. J., As, van, B. A. C., Palmans, A. R. A. & Sijbesma, R. P., 2007, In: Macromolecules. 40, 17, p. 6340-6348

  Research output: Contribution to journal › Article › Academic › peer-review

  • Copolymer 100%
  • Polyester 25%
  • Hydrogen Bonding 12%
  • Mechanical Strength 12%
  • Copolymerization 12%
  57 Citations (Scopus)

  1 Downloads (Pure)

• Supramolecular graft copolymers based on 2,7-diamido-1,8-naphthyridines

  Ohkawa, H., Ligthart, G. B. W. L., Sijbesma, R. P. & Meijer, E. W., 2007, In: Macromolecules. 40, 5, p. 1453-1459

  Research output: Contribution to journal › Article › Academic › peer-review

  • 1,8-naphthyridine 100%
  • Graft Copolymer 100%
  • Polymerization 66%
  • NMR Spectroscopy 33%
  • Hydrogen Bonding 33%
  63 Citations (Scopus)

  3 Downloads (Pure)

• Supramolecular graft-copolymers based on complementary quadruple hydrogen bonding

  Sijbesma, R. P., Ligthart, G. B. W. L., Ohkawa, H. & Meijer, E. W., 2007, Proceedings of the 233rd American Chemical Society National Meeting, March 25-29, 2007, Chicago, IL, United States. Washington, D. C: American Chemical Society, p. PMSE-154

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

  • Hydrogen Bonding 100%
  • Graft Copolymer 100%
  • Copolymer 50%
  • Mechanical Strength 25%
  • Mobile Phase Composition 25%

• Supramolecular graft-copolymers based on complementary quadruple hydrogen bonding

  Sijbesma, R. P., Ohkawa, H., Ligthart, G. B. W. L. & Meijer, E. W., 2007, In: PMSE Preprints. 96, p. 250-251

  Research output: Contribution to journal › Meeting Abstract › Academic

  • Hydrogen Bonding 100%
  • Graft Copolymer 100%

• Supramolecular polymer engineering

  Ligthart, G. B. W. L., Scherman, O. A., Sijbesma, R. P. & Meijer, E. W., 2007, Synthetic techniques. Matyjaszewski,, K., Gnanou, Y. & Leibler, L. (eds.). Weinheim: Wiley-VCH Verlag, p. 351-399 (Macromolecular engineering; vol. 1).

  Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

  3 Downloads (Pure)

• Template adaptability is key in the orientated crystallization of CaCO3

  Popescu, D. C., Smulders, M. M. J., Pichon, B., Chebotareva, N., Kwak, S. Y., Asselen, van, O. L. J., Sijbesma, R. P., DiMasi, E. & Sommerdijk, N. A. J. M., 2007, In: Journal of the American Chemical Society. 129, 45, p. 14058-14067

  Research output: Contribution to journal › Article › Academic › peer-review

  • Monolayers 100%
  • Amino Acids 100%
  • Film 66%
  • Nucleation 66%
  • Surface Active Agent 66%
  68 Citations (Scopus)

• Unidirectional dimerization and stacking of ureidopyrimidinone end groups in polycaprolactone supramolecular polymers

  Beek, van, D. J. M., Spiering, A. J. H., Peters, G. W. M., Nijenhuis, te, K. & Sijbesma, R. P., 2007, In: Macromolecules. 40, 23, p. 8464-8475

  Research output: Contribution to journal › Article › Academic › peer-review

  • Supramolecular Polymer 100%
  • Dimerization 100%
  • Urethane 100%
  • Polycaprolactone 100%
  • Hydrogen Bonding 50%
  176 Citations (Scopus)

  1 Downloads (Pure)
• 2006

  Amplification of chirality in benzene tricarboxamide helical supramolecular polymers

  Wilson, A. J., Gestel, van, J. A. M., Sijbesma, R. P. & Meijer, E. W., 2006, In: Chemical Communications, ChemComm. 2007, 42, p. 4404-4406 3 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Polymers 100%
  71 Citations (Scopus)

• A selectivity-driven supramolecular polymerization of an AB monomer

  Scherman, O. A., Ligthart, G. B. W. L., Sijbesma, R. P. & Meijer, E. W., 2006, In: Angewandte Chemie - International Edition. 45, 13, p. 2072-2076 5 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Polymerization 100%
  • Monomer 100%
  • Supramolecular Polymer 25%
  • Hydrogen Bonding 25%
  • Alkene 25%
  126 Citations (Scopus)

• Catalyst recycling via hydrogen-bonding-based affinity tags

  Gruijters, B. W. T., Broeren, M. A. C., Delft, van, F. L., Sijbesma, R. P., Hermkens, P. H. H. & Rutjes, F. P. J. T., 2006, In: Organic Letters. 8, 15, p. 3163-3166 4 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Hydrogen Bonding 100%
  • Huisgen Cycloaddition 50%
  43 Citations (Scopus)

  1 Downloads (Pure)

• Cooperative End-to-end and Lateral Hydrogen-Bonding Motifs in Supramolecular Thermoplastic Elastomers

  Kautz, H., Beek, van, D. J. M., Sijbesma, R. P. & Meijer, E. W., 2006, In: Macromolecules. 39, 13, p. 4265-4267

  Research output: Contribution to journal › Article › Academic › peer-review

  • Elastomer 100%
  240 Citations (Scopus)

  6 Downloads (Pure)

• Molecule-based rheology switching

  Paulusse, J. M. J. & Sijbesma, R. P., 2006, In: Angewandte Chemie - International Edition. 45, 15, p. 2334-2337 4 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Flow Kinetics 100%
  • Sol-Gel 100%
  • Liquid 50%
  98 Citations (Scopus)

  1 Downloads (Pure)

• Olefin metathesis and quadruple hydrogen bonding : a powerful combination in multistep supramolecular synthesis

  Scherman, O. A., Ligthart, G. B. W. L., Ohkawa, H., Sijbesma, R. P. & Meijer, E. W., 2006, In: Proceedings of the National Academy of Sciences of the United States of America (PNAS). 103, 32, p. 11850-11855

  Research output: Contribution to journal › Article › Academic › peer-review

  • Hydrogen Bonding 100%
  • Alkene 100%
  • Copolymer 100%
  • Self Assembly 100%
  • Telechelic Polymer 50%
  91 Citations (Scopus)

• Oligo(trimethylene carbonate)-based supramolecular biomaterials

  Dankers, P. Y. W., Zhang, Z., Wisse, E., Grijpma, D. W., Sijbesma, R. P., Feijen, J. & Meijer, E. W., 2006, In: Macromolecules. 39, 25, p. 8763-8771

  Research output: Contribution to journal › Article › Academic › peer-review

  • Hydrogen Bonding 100%
  • Biomaterial 100%
  • Crystallite 66%
  • Film 33%
  • Mechanical Strength 33%
  92 Citations (Scopus)

  3 Downloads (Pure)

• Pd-Catalyzed Amidation of 2-Chloro- and 2,7-Dichloro-1,8-naphthyridines

  Ligthart, G. B. W. L., Ohkawa, H., Sijbesma, R. P. & Meijer, E. W., 2006, In: Journal of Organic Chemistry. 71, 1, p. 375-378 4 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • 1,8-naphthyridine 100%
  • Carboxamide 25%
  • Primary Amide 25%
  53 Citations (Scopus)

• Properties and morphology of segmented copoly(ether urea)s with uniform hard segments

  Versteegen, R. M., Kleppinger, R., Sijbesma, R. P. & Meijer, E. W., 2006, In: Macromolecules. 39, 2, p. 772-783

  Research output: Contribution to journal › Article › Academic › peer-review

  • Crystal Structure 100%
  • Tensile Testing 100%
  • Elastic Behavior 100%
  • Glass Transition 100%
  147 Citations (Scopus)

  5 Downloads (Pure)

• Quantification of ultrasound-induced chain scission in PdII-phosphine coordination polymers

  Paulusse, J. M. J., Huijbers, J. P. J. & Sijbesma, R. P., 2006, In: Chemistry : A European Journal. 12, 18, p. 4928-4934

  Research output: Contribution to journal › Article › Academic › peer-review

  • Coordination Polymer 100%
  • Palladium 66%
  • Molecular Mass 50%
  • Complexation 16%
  • Phosphorus-31 Magnetic Resonance Spectroscopy 16%
  76 Citations (Scopus)

• Reversible mechanochemistry of coordination polymers and networks

  Paulusse, J. M. J., 2006, Eindhoven: Technische Universiteit Eindhoven. 103 p.

  Research output: Thesis › Phd Thesis 1 (Research TU/e / Graduation TU/e)

  Open Access

  File
  313 Downloads (Pure)

• Reversible ultrasonic scission of coordination polymers: Towards catalysis

  Paulusse, J. M. J., Sijbesma, R. P. & Meijer, E. W., 2006, Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006. American Chemical Society, p. IEC-090

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

  • Ultrasonics 100%
  • Cleavage 100%
  • Catalysis 100%
  • Coordination Polymer 100%
  • Palladium 50%

• Supramolecular biomaterials : introducing a modular approach

  Dankers, P. Y. W., 2006, Eindhoven: Technische Universiteit Eindhoven. 172 p.

  Research output: Thesis › Phd Thesis 1 (Research TU/e / Graduation TU/e)

  Open Access

  File
  1046 Downloads (Pure)

• Ultrasound in polymer chemistry : revival of an established technique

  Paulusse, J. M. J. & Sijbesma, R. P., 2006, In: Journal of Polymer Science, Part A: Polymer Chemistry. 44, 19, p. 5445-5453

  Research output: Contribution to journal › Article › Academic › peer-review

  • Free Radical Polymerization 100%
  • Metal Complex 100%
  136 Citations (Scopus)
• 2005

  Chiral amplification in the transcription of supromolecular helicity into a polymer backbone

  Wilson, A. J., Masuda, M., Sijbesma, R. P. & Meijer, E. W., 2005, In: Angewandte Chemie - International Edition. 44, 15, p. 2275-2279 5 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Polymerization 100%
  • Structure-Directing Agent 100%
  126 Citations (Scopus)

• Complementary quadruple hydrogen bonding for supramolecular architectures

  Ligthart, G. B. W. L., Ohkawa, H., Sijbesma, R. P. & Meijer, E. W., 2005, Abstracts of papers, 230th ACS national meeting : August 28 - September 1, 2005, Washington, DC. Washington, DC, United States: American Chemical Society, p. POLY-065

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

• Complementary quadruple hydrogen bonding in supramolecular copolymers

  Ligthart, G. B. W. L., Ohkawa, H., Sijbesma, R. P. & Meijer, E. W., 2005, In: Journal of the American Chemical Society. 127, 3, p. 810-811 2 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Hydrogen Bonding 100%
  • Copolymer 100%
  • 1,8-naphthyridine 33%
  261 Citations (Scopus)

  7 Downloads (Pure)

• Dendrimer-based transient supramolecular networks

  Versteegen, R. M., Beek, van, D. J. M., Sijbesma, R. P., Vlassopoulos, D., Fytas, G. & Meijer, E. W., 2005, In: Journal of the American Chemical Society. 127, 40, p. 13862-13868

  Research output: Contribution to journal › Article › Academic › peer-review

  • Solution and Solubility 100%
  • Dynamics 100%
  • Motion 100%
  • Dynamic Light Scattering 100%
  • Binding Site 100%
  39 Citations (Scopus)

  2 Downloads (Pure)

• Directionality in supramolecular polymer architectures

  Scherman, O. A., Sijbesma, R. P. & Meijer, E. W., 2005, In: Polymer Preprints. 46, 2, p. 1105-1106

  Research output: Contribution to journal › Article › Academic

  • Polymer Architecture 100%
  1 Downloads (Pure)

• Disulfide exchange in hydrogen-bonded cyclic assemblies: stereochemical self-selection by double dynamic chemistry

  Cate, ten, A. T., Dankers, P. Y. W., Sijbesma, R. P. & Meijer, E. W., 2005, In: Journal of Organic Chemistry. 70, 15, p. 5799-5803 5 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Chemistry 100%
  • Diastereomer 100%
  • Hydrogen 100%
  • Disulfide 100%
  • Diastereoisomer 100%
  40 Citations (Scopus)

  3 Downloads (Pure)

• Hierarchical self-assembly of columnar aggregates

  Keizer, H. M. & Sijbesma, R. P., 2005, In: Chemical Society Reviews. 34, 3, p. 226-234

  Research output: Contribution to journal › Article › Academic › peer-review

  • Self Assembly 100%
  • Covalent 100%
  152 Citations (Scopus)

• Molecular recognition in a thermoplastic elastomer

  Koevoets, R. A., Versteegen, R. M., Kooijman, H., Spek, A. L., Sijbesma, R. P. & Meijer, E. W., 2005, In: Journal of the American Chemical Society. 127, 9, p. 2999-3003

  Research output: Contribution to journal › Article › Academic › peer-review

  • Thermoplastic Elastomer 100%
  • Film 50%
  • Elastomer 50%
  • Tetrahydrofuran 33%
  104 Citations (Scopus)

  1 Downloads (Pure)

• Morphological control and molecular recognition by bis-urea hydrogen bonding in micelles of amphiphilic tri-block copolymers

  Chebotareva, N., Bomans, P. H. H., Frederik, P. M., Sommerdijk, N. A. J. M. & Sijbesma, R. P., 2005, In: Chemical Communications, ChemComm. 2005, 39, p. 4967-4969 3 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Hydrogen Bonding 100%
  • Micelle 100%
  • Block Copolymer 100%
  • Morphology 100%
  • Molecular Recognition 100%
  83 Citations (Scopus)

  8 Downloads (Pure)

• New architectures arising from complementary quadruple hydrogen bonding motifs

  Scherman, O. A., Sijbesma, R. P. & Meijer, E. W., 2005, Abstracts of Papers, 229th ACS National Meeting. Washington: American Chemical Society, p. ORGN-866

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

  • Hydrogen Bonding 100%
  • Naphthyridine 100%
  • Self Assembly 100%
  • Copolymer 100%
  • Olefin 100%

• Noncovalent synthesis of supramolecular dendritic architectures in water

  Broeren, M. A. C., Linhardt, J. G., Malda, H., Waal, de, B. F. M., Versteegen, R. M., Meijer, J. T., Lowik, D. W. P. M., van Hest, J. C. M., Genderen, van, M. H. P. & Meijer, E. W., 2005, In: Journal of Polymer Science, Part A: Polymer Chemistry. 43, 24, p. 6431-6437 7 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Dendrimer 100%
  • Chloroform 37%
  • Chlorine Compounds 37%
  • Solubilization 25%
  • NMR Spectroscopy 12%
  16 Citations (Scopus)

• Quadruple hydrogen-bonded supramolecular polymers: Complementarity versus self-complementarity.

  Meijer, E. W. & Sijbesma, R. P., 2005, Abstracts of Papers, 229th ACS National Meeting. San Diego, CA, United States: American Chemical Society, p. PMSE-075

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

• Reversible, high molecular weight palladium and platinum coordination polymers based on phosphorus ligands

  Paulusse, J. M. J., Huijbers, J. P. J. & Sijbesma, R. P., 2005, In: Macromolecules. 38, 15, p. 6290-6298

  Research output: Contribution to journal › Article › Academic › peer-review

  • Complexation 100%
  • Phosphorus 31 100%
  • Palladium Complex 100%
  43 Citations (Scopus)

• Rheological behavior of a quadruple hydrogen-bonded supramolecular polyester

  Beek, van, D. J. M., Peters, G. W. M., Sijbesma, R. P. & Meijer, E. W., 2005, Abstracts of Papers, 230th ACS National Meeting. Washington, DC, United States: American Chemical Society, p. PMSE-257

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

  • Hydrogen Bonding 100%
  • Yield Stress 100%
  • Dimerization 100%
  • Biomaterial 100%
  • Stress Relaxation 100%

• Rheological behavior of a quadruple hydrogen-bonded supramolecular polyester

  Beek, van, D. J. M., Peters, G. W. M., Sijbesma, R. P. & Meijer, E. W., 2005, In: PMSE Preprints. 93, p. 433-434

  Research output: Contribution to journal › Meeting Abstract › Academic

  • Polyester 100%
  • Hydrogen 100%
  1 Downloads (Pure)

• Self-assembled pentamers and hexamers linked through quadruple-hydrogen-bonded 2-ureido-4 [1H]-pyrimidinones

  Keizer, H. M., Gonzalez, J. J., Segura, M., Prados, P., Sijbesma, R. P., Meijer, E. W. & Mendoza, de, J., 2005, In: Chemistry : A European Journal. 11, 16, p. 4602-4608

  Research output: Contribution to journal › Article › Academic › peer-review

  • Kd 100%
  • Adamantane 100%
  • Hydrogen 100%
  • Monomer 100%
  59 Citations (Scopus)

• Synthesis and characterization of segmented copoly(ether urea)s with uniform hard segments

  Versteegen, R. M., Sijbesma, R. P. & Meijer, E. W., 2005, In: Macromolecules. 38, 8, p. 3176-3184

  Research output: Contribution to journal › Article › Academic › peer-review

  • Hydrogen Bonding 100%
  • Mechanical Strength 100%
  111 Citations (Scopus)

  3 Downloads (Pure)

• Tailoring polymer architectures through dynamic self assembly

  Scherman, O. A., Sijbesma, R. P. & Meijer, E. W., 2005, Abstracts of Papers, 230th ACS National Meeting. Washington, DC, United States: American Chemical Society, p. AEI-097

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

  • Polymer Architecture 100%
  • Self Assembly 100%
  • Hydrogen Bonding 100%
  • Copolymer 100%
  • Naphthyridine 75%
• 2004

  Conformational control in the cyclization of hydrogen-bonded supramolecular polymers.

  Cate, ten, A. T., Kooijman, H., Spek, A. L., Sijbesma, R. P. & Meijer, E. W., 2004, In: Journal of the American Chemical Society. 126, 12, p. 3801-3808

  Research output: Contribution to journal › Article › Academic › peer-review

  • Supramolecular Polymer 100%
  • Hydrogen 100%
  • Monomer 100%
  • Dimer 100%
  • Hydrogen Bonding 100%
  137 Citations (Scopus)

• Pi-stacked quadruply hydrogen-bonded dimers: pi-stacking influences H-bonding

  Guo, D., Sijbesma, R. P. & Zuilhof, H., 2004, In: Organic Letters. 6, 21, p. 3667-3670

  Research output: Contribution to journal › Article › Academic › peer-review

  • Hydrogen 100%
  • Dimer 100%
  • Electrostatics 100%
  • Density Functional Theory 33%
  • Hydrogen Bonding 33%
  59 Citations (Scopus)

• Preparation of supramolecular polymers by copolymerization of monomers containing quadruple hydrogen bonding units with regular monomers

  Janssen, H. M. (Inventor), Gemert, van, G. M. L. (Inventor), Cate, ten, A. T. (Inventor), Beek, van, D. J. M. (Inventor), Sijbesma, R. P. (Inventor), Meijer, E. W. (Inventor) & Bosman, A. W. (Inventor), 19 Feb 2004, Patent No. US2004034190

  Research output: Patent › Patent publication

  Open Access

  File

  • Hydrogen Bonding 100%
  • Copolymerization 100%
  • Atom-Transfer Radical-Polymerization 100%
  102 Downloads (Pure)

• Reversible mechanochemistry of a PdII coordination polymer

  Paulusse, J. M. J. & Sijbesma, R. P., 2004, In: Angewandte Chemie - International Edition. 43, 34, p. 4460-4462 3 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  • Molecular Mass 100%
  • Coordination Polymer 100%
  • Mechanochemistry 100%
  • Sonication 33%
  • Phosphane 33%
  153 Citations (Scopus)

  2 Downloads (Pure)

• Rings, chains and networks in hydrogen-bonded supramolecular polymers

  Cate, ten, A. T., 2004, Eindhoven: Technische Universiteit Eindhoven. 111 p.

  Research output: Thesis › Phd Thesis 1 (Research TU/e / Graduation TU/e)

  Open Access

  File
  512 Downloads (Pure)

• Siloxane polymers with quadruple hydrogen bonding units

  Bosman, A. W. (Inventor), Janssen, H. M. (Inventor), Gemert, van, G. M. L. (Inventor), Verstegen, R. M. (Inventor), Meijer, E. W. (Inventor) & Sijbesma, R. P. (Inventor), 24 Jun 2004, Patent No. WO2004052963

  Research output: Patent › Patent publication

  Open Access

  File

  • Hydrogen Bonding 100%
  • Silicone Oil 100%
  • Polysiloxane 100%
  • Materials Property 100%
  197 Downloads (Pure)