1
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Thoma JL, Little H, Duhamel J, Zhang L, Leung KT. Persistence Length of PEGMA Bottle Brushes Determined by Pyrene Excimer Fluorescence. Polymers (Basel) 2023; 15:3958. [PMID: 37836007 PMCID: PMC10575010 DOI: 10.3390/polym15193958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Seven pyrene-labeled poly(oligo(ethylene glycol) methyl ether methacrylate)s (PyEG5-PEGnMAs) were prepared with n = 0, 3, 4, 5, 7, 9, and 19 ethylene glycol units by copolymerizing a small amount of penta(ethylene glycol) 1-pyrenemethyl ether methacrylate with an EGnMA monomer. The conformation of the PyEG5-PEGnMA polymers evolved from a random coil for PyEG5-PEG0MA or poly(methyl methacrylate) to a polymeric bottle brush (PBB) architecture with increasing side chain length. The fluorescence decays of the PyEG5-PEGnMA samples were fitted according to the fluorescence blob model (FBM) whose parameters were used, in combination with the Kratky-Porod equation, to calculate the persistence length of these polymers. The persistence lengths obtained from the PEF experiments were found to increase with the square of the number (NS) of non-hydrogen atoms in the side chain as expected theoretically. The persistence lengths found with the PyEG5-PEGnMA samples in DMF also matched those found earlier for another series of PEGnMA samples labeled with 1-pyrenebutanol. The good agreement found between the persistence lengths obtained with the PEGnMA samples labeled with two different pyrene derivatives illustrates the robustness of the method and its applicability for measuring the unknown persistence length of polydisperse polymer samples.
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Affiliation(s)
- Janine L. Thoma
- Institute for Polymer Research, Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (J.L.T.); (H.L.)
| | - Hunter Little
- Institute for Polymer Research, Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (J.L.T.); (H.L.)
| | - Jean Duhamel
- Institute for Polymer Research, Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (J.L.T.); (H.L.)
| | - Lei Zhang
- Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (L.Z.); (K.T.L.)
| | - Kam Tong Leung
- Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; (L.Z.); (K.T.L.)
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2
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Shahrokhi F, Abdollahi MF, Zhao Y. A Comparative Study of Redox-Active Dithiafulvenyl-Functionalized 1,3,6,8-Tetraphenylpyrene Derivatives. J Org Chem 2021; 86:12723-12736. [PMID: 34491072 DOI: 10.1021/acs.joc.1c01260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of 1,3,6,8-tetraphenylpyrene (TPPy) derivatives substituted with redox-active 1,4-dithiafulvenyl (DTF) groups was synthesized and characterized. The conformational properties of these DTF-TPPys and their TPPy precursors were assessed by X-ray single-crystal and nuclear magnetic resonance analyses. Their electronic and redox properties were examined by ultraviolet-visible absorption, fluorescence, and cyclic voltammetric analyses. The DTF substitution was found to strongly modify the absorption, emission, and electrochemical properties, while detailed effects can be linked to substitution patterns and alkyl side chains attached to the DTF groups. Furthermore, the DTF-TPPy derivatives showed sensitivity to acids; in particular, the vinylic proton of DTF group could undergo efficient proton/deuterium exchange with D2O in an acidic medium.
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Affiliation(s)
- Farshid Shahrokhi
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X7
| | - Maryam F Abdollahi
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X7
| | - Yuming Zhao
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X7
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3
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Flores-Rojas GG, Ruiu A, Vonlanthen M, Rojas-Montoya SM, Martínez-Serrano RD, Morales-Morales D, Rivera E. Synthesis and characterization of cyclen cored photoactive star compounds and their Cu(I) and Cu(II) complexes. Effect of the valence and ligand size on their molar extinction coefficient. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Pramanik B, Ahmed S, Singha N, Das BK, Dowari P, Das D. Unorthodox Combination of Cation-π and Charge-Transfer Interactions within a Donor-Acceptor Pair. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:478-488. [PMID: 30561205 DOI: 10.1021/acs.langmuir.8b03820] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cation-π and charge-transfer (CT) interactions are ubiquitous in nature and involved in several biological processes. Although the origin of both the interactions in isolated pairs has extensively been studied, CT interactions are more prominent in supramolecular chemistry. Involvement of cation-π interactions in the preparation of advanced functional soft materials is uncommon. Moreover, a combination of these two interactions within a pair of electron donor (D) and acceptor (A) is uncharted. Here, we present a rational design to incorporate a combination of these two interactions within a D-A pair. A pyrene-peptide conjugate exhibits a combination of cation-π and CT interactions with a cationic naphthalenediimide (NDI) molecule in water. Nuclear Overhauser effect spectroscopy NMR along with other techniques and density functional theory calculations reveal the involvement of these interactions. The π-planes of pyrene and NDI adopt an angle of 56° to satisfy both the interactions, whereas β-sheet formation by the peptide sequence facilitates self-assembly. Notably, the binary system forms a self-supporting hydrogel at a higher concentration. The hydrogel shows efficient self-healing and injectable property. The hydrogel retains its thixotropic nature even at an elevated temperature. Broadly, we demonstrate a pathway that should prove pertinent to various areas, ranging from understanding biological assembly to peptide-based functional soft materials.
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Affiliation(s)
- Bapan Pramanik
- Department of Chemistry , Indian Institute of Technology Guwahati , Assam 781039 , India
| | - Sahnawaz Ahmed
- Department of Chemistry , Indian Institute of Technology Guwahati , Assam 781039 , India
| | - Nilotpal Singha
- Department of Chemistry , Indian Institute of Technology Guwahati , Assam 781039 , India
| | - Basab Kanti Das
- Department of Chemistry , Indian Institute of Technology Guwahati , Assam 781039 , India
| | - Payel Dowari
- Department of Chemistry , Indian Institute of Technology Guwahati , Assam 781039 , India
| | - Debapratim Das
- Department of Chemistry , Indian Institute of Technology Guwahati , Assam 781039 , India
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5
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Danko M, Hrdlovič P, Brzezinski M, Duda A, Biela T. Real-time monitoring of stereocomplex formation of poly(l-lactide) and poly(d-lactide) decorated with a pyrene derivative as a fluorescence probe. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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6
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Fowler MA, Duhamel J, Qiu XP, Korchagina E, Winnik FM. Temperature-Controlled Interactions between Poly(N-isopropylacrylamide) Mesoglobules Probed by Fluorescence. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Andrew Fowler
- Institute for Polymer Research, Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Jean Duhamel
- Institute for Polymer Research, Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Xing Ping Qiu
- Department of Chemistry, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal, QC H3C 3J7, Canada
| | - Evgeniya Korchagina
- Department of Chemistry, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal, QC H3C 3J7, Canada
| | - Françoise M. Winnik
- Department of Chemistry, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal, QC H3C 3J7, Canada
- Faculty of Pharmacy and Department of Chemistry, Laboratory of Polymer Chemistry, University of Helsinki, P.O. Box 55, Helsinki FI-00014, Finland
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7
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Affiliation(s)
- Heng Hu
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - Guojun Liu
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
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8
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Kaushlendra K, Asha SK. H-Bonding vs Non-H-Bonding in 100% Pyrene Methacrylate Comb Polymers: Self-Assembly Probed by Time-Resolved Emission Spectra and Temperature Dependent Fluorescence. J Phys Chem B 2014; 118:4951-62. [DOI: 10.1021/jp501346b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- K. Kaushlendra
- Polymer & Advanced Material Laboratory, Polymer Science & Engineering Division, CSIR-NCL, Pune 411008, Maharashtra, India
| | - S. K. Asha
- Polymer & Advanced Material Laboratory, Polymer Science & Engineering Division, CSIR-NCL, Pune 411008, Maharashtra, India
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9
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Molecular dynamics simulation of adsorption of pyrene–polyethylene glycol onto graphene. J Colloid Interface Sci 2014; 418:66-73. [DOI: 10.1016/j.jcis.2013.12.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 11/27/2013] [Accepted: 12/03/2013] [Indexed: 11/22/2022]
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10
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Kimura K, Fukushima Y. Fluorescence Studies on Self-association of Biodegradable Pyrene-labeled Poly(L-lysine) Grafted with Poly(caprolactone). J PHOTOPOLYM SCI TEC 2014. [DOI: 10.2494/photopolymer.27.703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kenji Kimura
- Department of Biological Applied Chemistry, Graduate School of Engineering, Toyo University
| | - Yasumasa Fukushima
- Department of Biological Applied Chemistry, Graduate School of Engineering, Toyo University
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11
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Kaushlendra K, Asha SK. Variable-Temperature Time-Resolved Emission Spectra Studies of Random Pyrene Urethane Methacrylate Copolymers with High Pyrene Incorporation. J Phys Chem B 2013; 117:11863-76. [DOI: 10.1021/jp406885f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- K. Kaushlendra
- Polymer Science & Engineering Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India
| | - S. K. Asha
- Polymer Science & Engineering Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India
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12
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Calderon IAC, Lao KS, Chua ET, Romano E, Anore KHS, Cabatuando ACR, Ibabao MJP, Guerrero RA, So RC. FRET interaction between pyrene-tagged β-hydroxy acid and perylen-3-ylmethylmethacrylate co- N-dodecylmethacrylamide in film and solution. J Appl Polym Sci 2013. [DOI: 10.1002/app.38881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Fowler M, Siddique B, Duhamel J. Effect of sequence on the ionization behavior of a series of amphiphilic polypeptides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4451-4459. [PMID: 23484851 DOI: 10.1021/la400030j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The behavior of five polypeptides made of hydrophilic and pH-responsive aspartic acid (Asp) and hydrophobic phenylalanine (Phe), which had been prepared by stitching together short well-defined sequences of Asp and Phe, was studied as a function of pH. The effect of pH on these polypeptides referred to as (Asp3Phe1)n, (Asp2Phe1)n, (Asp1Phe1)n, (Asp1Phe2)n, and (Asp1Phe3)n varied dramatically depending on their constituting sequence. The more hydrophobic polypeptides (Asp1Phe2)n and (Asp1Phe3)n behaved as if the Asp's were isolated from each other and showed an apparent pKa (pKa(app)) that remained constant with level of ionization (α = [Asp(-)]/[Asp]total) and equaled 5.4 and 6.4, respectively. The more hydrophilic polypeptides (Asp3Phe1)n and (Asp2Phe1)n behaved like weak polyacids showing a linear increase in pKa(app) with increasing α. The pKa(app) of (Asp1Phe1)n showed a trend as a function of α intermediate between the Asp-rich and Phe-rich polypeptides, behaving as if the Asp's were isolated at low α values (<0.35) but acting as a weak polyacid for large α values (>0.35). The effect that α, and thus the charge density of the polypeptides, had on the collapse and aggregation of the polypeptides was characterized by conducting static light scattering and fluorescence measurements. Static light scattering measurements demonstrated that all polypeptides precipitated and aggregated in solution at a critical charge density of 0.2. Fluorescence measurements with pyrene indicated that this behavior was due to the formation of Phe aggregates in water. Together, these experiments provide a complete description of how pH affects the behavior of a series of unique amphiphilic polypeptides designed with a well-defined sequence.
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Affiliation(s)
- Michael Fowler
- Institute of Polymer Research, Waterloo Institute of Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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14
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Bédard AC, Collins SK. Influence of Poly(ethylene glycol) Structure in Catalytic Macrocyclization Reactions. ACS Catal 2013. [DOI: 10.1021/cs400050g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Anne-Catherine Bédard
- Département de Chimie, Centre
for Green Chemistry and Catalysis, Université de Montréal, CP 6128 Station Downtown, Montréal,
Québec H3C 3J7, Canada
| | - Shawn K. Collins
- Département de Chimie, Centre
for Green Chemistry and Catalysis, Université de Montréal, CP 6128 Station Downtown, Montréal,
Québec H3C 3J7, Canada
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15
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Exploiting Aggregation To Achieve Phase Separation in Macrocyclization. Chemistry 2012; 19:2108-13. [DOI: 10.1002/chem.201203433] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 10/31/2012] [Indexed: 11/07/2022]
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16
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Fowler MA, Duhamel J, Bahun GJ, Adronov A, Zaragoza-Galán G, Rivera E. Studying Pyrene-Labeled Macromolecules with the Model-Free Analysis. J Phys Chem B 2012. [DOI: 10.1021/jp307161c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael A. Fowler
- Institute
of Polymer Research,
Waterloo Institute of Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, Ontario
N2L 3G1, Canada
| | - Jean Duhamel
- Institute
of Polymer Research,
Waterloo Institute of Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, Ontario
N2L 3G1, Canada
| | - Greg J. Bahun
- Department of Chemistry and the Brockhouse
Institute for Materials Research, McMaster University, Hamilton, Canada
| | - Alex Adronov
- Department of Chemistry and the Brockhouse
Institute for Materials Research, McMaster University, Hamilton, Canada
| | - Gerardo Zaragoza-Galán
- Instituto de Investigaciones
en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 D.F. México
| | - Ernesto Rivera
- Instituto de Investigaciones
en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 D.F. México
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Hashidzume A, Zheng Y, Harada A. Interaction of cyclodextrins with pyrene-modified polyacrylamide in a mixed solvent of water and dimethyl sulfoxide as studied by steady-state fluorescence. Beilstein J Org Chem 2012; 8:1312-7. [PMID: 23019465 PMCID: PMC3458755 DOI: 10.3762/bjoc.8.150] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Accepted: 07/31/2012] [Indexed: 01/09/2023] Open
Abstract
The interaction of β- and γ-cyclodextrins (β-CD and γ-CD, respectively) with polyacrylamide modified with pyrenyl (Py) residues (pAAmPy) was investigated in a mixed solvent of water and dimethyl sulfoxide (DMSO) by steady-state fluorescence. In the absence of CD, the fluorescence spectra indicated that the formation of Py dimers became less favorable with increasing volume fraction of DMSO (x(DMSO)). The fluorescence spectra at varying x(DMSO) and CD concentrations indicated that β-CD and γ-CD included monomeric and dimeric Py residues, respectively. Using the fluorescence spectra, equilibrium constants of the formation of Py dimers and the complexation of β-CD and γ-CD with Py residues were roughly estimated based on simplified equilibrium schemes.
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Affiliation(s)
- Akihito Hashidzume
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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