1
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Yin G, Namikoshi T, Teraguchi M, Kaneko T, Aoki T. Absolute asymmetric polymerizations in solution needing no physical chiral source. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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2
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De Silva EH, Novak BM. Temperature induced helical contraction and expansion in branched polycarbodiimides and their solvent vapor sensing properties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1978849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Enosha Harshani De Silva
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas, USA
| | - Bruce M. Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas, USA
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3
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De Silva EH, Salamat N, Zhang L, Zheng J, Novak BM. Water-soluble polycarbodiimides and their cytotoxic and antifungal properties. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:2369-2386. [PMID: 34428379 DOI: 10.1080/09205063.2021.1971821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We have successfully synthesized water-soluble neutral and polyelectrolyte helical polycarbodiimides and studied their biological properties. These polymers were prepared by decorating carbodiimide backbones with nonionic, hydrophilic functional groups such as dimethylamine, piperazine, and morpholine. Additionally, the 3° amines present in these functional groups were quaternized using methyl iodide as the alkylating agent to produce their ionic analogs. Polycarbodiimides were chosen as the base polymer used because of their facile chemical modification, pH tolerance in terms of both their helical conformations and degradation behaviors, and tunable helical inversion barriers. Hydrophilic side groups, such as morpholine, dimethylamine, and piperazine, can be used to balance the amphiphilic architecture of the polycarbodiimides along with lipophilic groups, such as alkyl side chains. A chiral R or S BINOL Ti(IV) isopropoxide catalyst was used to control the handedness of the polycarbodiimide helices in these studies. These ionic and neutral polycarbodiimides were subsequently studied for potential antimicrobial and cytotoxic properties. Poly[N-methyl-N'-2-morpholinoethylcarbodiimide], as an example, exhibited significant antifungal properties against Candida albicans. Also, Poly[N-methyl-N'-2-morpholinoethylcarbodiimide] showed significant inhibition of biofilm formation. This suggests that the polymer is a promising candidate for antifungal biomedical applications. Measuring cytotoxicity against urinary bladder cancer cells, poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide] (S-cat) and poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide]-MeI (S-cat) showed significantly low IC50 values. The IC50 values of poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide] (S-cat) and Poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide]-MeI (S-cat) are 3.50 μM and 1.27 μM, respectively. The significantly low cancer cell growth inhibition concentration implies the highest cytotoxicity of the polymers, suggesting potential applications as cancer therapeutics. These results also showed that the functionalization and chirality of polycarbodiimides modulate their anticancer and antifungal activity.
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Affiliation(s)
- Enosha Harshani De Silva
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Narges Salamat
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Li Zhang
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Jie Zheng
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Bruce M Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
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4
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Kulikov OV, Siriwardane DA, Budhathoki-Uprety J, McCandless GT, Mahmood SF, Novak BM. The secondary structures of PEG-functionalized random copolymers derived from (R)- and (S)- families of alkyne polycarbodiimides. Polym Chem 2018. [DOI: 10.1039/c8py00282g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Macromolecular micelles: a hydrophobic polyamidine backbone surrounded by hydrophilic PEG chains.
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Affiliation(s)
- Oleg V. Kulikov
- Department of Chemistry
- Massachusetts Institute of Technology
- Cambridge
- USA
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5
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Chen J, Li B, Li X, Zhang J, Wan X. Gradient helical copolymers: synthesis, chiroptical properties, thermotropic liquid crystallinity, and self-assembly in selective organic solvents. Polym Chem 2018. [DOI: 10.1039/c8py00237a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel gradient copolymers R-(−)-poly(StN-grad-C8) were synthesized through atom transfer radical copolymerization of an achiral styrenic monomer, N,N-dimethyl-4-ethenylbenzamide (M-StN), and a chiral bulky vinylterphenyl monomer, (−)-2,5-bis{4′-[(R)-sec-octyloxycarbonyl]phenyl}styrene (R-(−)-M-C8).
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Affiliation(s)
- Junxian Chen
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Bowen Li
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Xiaofu Li
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Jie Zhang
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Science
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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6
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Yin G, Zhang G, Aoki T, Teraguchi M, Kaneko T, Rodriguez Castanon J, Shiotsuki M, Sanda F. Transformer of Achiral Amounts to Chirality: Double Reversal of Enantioselectivity Using a Single Cocatalyst in Asymmetric Polymerization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01671] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Guanwu Yin
- Department
of Applied Chemistry and Chemical Engineering, Graduate School of
Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, Japan
| | - Geng Zhang
- Department
of Applied Chemistry and Chemical Engineering, Graduate School of
Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, Japan
| | - Toshiki Aoki
- Department
of Applied Chemistry and Chemical Engineering, Graduate School of
Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, Japan
| | - Masahiro Teraguchi
- Department
of Applied Chemistry and Chemical Engineering, Graduate School of
Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, Japan
| | - Takashi Kaneko
- Department
of Applied Chemistry and Chemical Engineering, Graduate School of
Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, Japan
| | - Jesus Rodriguez Castanon
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masashi Shiotsuki
- Department
of Chemistry and Energy Engineering, Faculty of Engineering, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo 158-8557, Japan
| | - Fumio Sanda
- Department
of Chemistry and Materials Engineering, Faculty of Chemistry, Materials
and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
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7
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Wangngae S, Pattarawarapan M, Phakhodee W. Ph3P/I2-Mediated Synthesis of N,N′,N″-Substituted Guanidines and 2-Iminoimidazolin-4-ones from Aryl Isothiocyanates. J Org Chem 2017; 82:10331-10340. [DOI: 10.1021/acs.joc.7b01794] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sirilak Wangngae
- Department
of Chemistry, Faculty of Science, ‡Graduate School, §Center of Excellence in Materials
Science and Technology, and ∥Center of Excellence for Innovation in Chemistry,
Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Mookda Pattarawarapan
- Department
of Chemistry, Faculty of Science, ‡Graduate School, §Center of Excellence in Materials
Science and Technology, and ∥Center of Excellence for Innovation in Chemistry,
Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wong Phakhodee
- Department
of Chemistry, Faculty of Science, ‡Graduate School, §Center of Excellence in Materials
Science and Technology, and ∥Center of Excellence for Innovation in Chemistry,
Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
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8
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Campos R, Reuther JF, Mammoottil NR, Novak BM. Solid State Sensing of Nonpolar VOCs Using the Bistable Expansion and Contraction of Helical Polycarbodiimides. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Raymond Campos
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, Texas 75080, United States
- ERC, Inc., The
Air Force Research Laboratory, Edwards AFB, California 93524-7680, United States
| | - James F. Reuther
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, Texas 75080, United States
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Nimmy R. Mammoottil
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, Texas 75080, United States
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9
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Elacqua E, Croom A, Lye DS, Weck M. Coil-helix and sheet-helix block copolymers via macroinitiation from telechelic ROMP polymers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28542] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Elizabeth Elacqua
- Department of Chemistry and the Molecular Design Institute; New York University; 100 Washington Square East New York NY 10003-6688
| | - Anna Croom
- Department of Chemistry and the Molecular Design Institute; New York University; 100 Washington Square East New York NY 10003-6688
| | - Diane S. Lye
- Department of Chemistry and the Molecular Design Institute; New York University; 100 Washington Square East New York NY 10003-6688
| | - Marcus Weck
- Department of Chemistry and the Molecular Design Institute; New York University; 100 Washington Square East New York NY 10003-6688
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10
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Siriwardane DA, Kulikov O, Reuther JF, Novak BM. Rigid, Helical Arm Stars through Living Nickel Polymerization of Carbodiimides. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02456] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Dumindika A. Siriwardane
- Department
of Chemistry and Alan G. MacDiarmid Nano Tech Institute, University of Texas Dallas, Richardson, Texas 75080, United States
| | - Oleg Kulikov
- Department
of Chemistry and Alan G. MacDiarmid Nano Tech Institute, University of Texas Dallas, Richardson, Texas 75080, United States
| | - James F. Reuther
- Department
of Chemistry and Alan G. MacDiarmid Nano Tech Institute, University of Texas Dallas, Richardson, Texas 75080, United States
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Bruce M. Novak
- Department
of Chemistry and Alan G. MacDiarmid Nano Tech Institute, University of Texas Dallas, Richardson, Texas 75080, United States
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11
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Kulikov OV, Siriwardane DA, McCandless GT, Mahmood SF, Novak BM. Self-assembly studies on triazolepolycarbodiimide- g -polystyrene copolymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Ultrasonic-assisted synthesis of carbodiimides from N,N′-disubstituted thioureas and ureas. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1761-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Liu L, Zang Y, Jia H, Aoki T, Kaneko T, Hadano S, Teraguchi M, Miyata M, Zhang G, Namikoshi T. Helix-Sense-Selective Polymerization of Achiral Phenylacetylenes and Unique Properties of the Resulting Cis-cisoidal Polymers. POLYM REV 2016. [DOI: 10.1080/15583724.2016.1160930] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Kulikov OV, Siriwardane DA, Reuther JF, McCandless GT, Sun HJ, Li Y, Mahmood SF, Sheiko SS, Percec V, Novak BM. Characterization of Fibrous Aggregated Morphologies and Other Complex Architectures Self-Assembled from Helical Alkyne and Triazole Polycarbodiimides (R)- and (S)-Families in the Bulk and Thin Film. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00407] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Oleg V. Kulikov
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | | | - James F. Reuther
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Gregory T. McCandless
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Hao-Jan Sun
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yuanchao Li
- Department
of Chemistry, The University at North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Samsuddin F. Mahmood
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Sergei S. Sheiko
- Department
of Chemistry, The University at North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Virgil Percec
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Bruce M. Novak
- Department
of Chemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
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15
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Reuther JF, Siriwardane DA, Kulikov OV, Batchelor BL, Campos R, Novak BM. Facile Synthesis of Rod–Coil Block Copolymers with Chiral, Helical Polycarbodiimide Segments via Postpolymerization CuAAC “Click” Coupling of Functional End Groups. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00453] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- James F. Reuther
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Dumindika A. Siriwardane
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Oleg V. Kulikov
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Benjamin L. Batchelor
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Raymond Campos
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
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16
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Wang R, Zhang J, Wan X. Optically Active Helical Vinylterphenyl Polymers: Chiral Teleinduction in Radical Polymerization and Tunable Stereomutation. CHEM REC 2015; 15:475-94. [DOI: 10.1002/tcr.201402083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Rong Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Polymer Chemistry and Physics of Ministry of Education; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 P. R. China
| | - Jie Zhang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Polymer Chemistry and Physics of Ministry of Education; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 P. R. China
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Polymer Chemistry and Physics of Ministry of Education; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 P. R. China
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17
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Suzuki Y, Miyagi Y, Shiotsuki M, Inai Y, Masuda T, Sanda F. Synthesis and helical structures of poly(ω-alkynamide)s having chiral side chains: effect of solvent on their screw-sense inversion. Chemistry 2014; 20:15131-43. [PMID: 25264082 DOI: 10.1002/chem.201402628] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Indexed: 11/06/2022]
Abstract
New ω-alkynamides, (S)-HC≡CCH2CONHCH2CH(CH3)CH2CH3 (1) and (S)-HC≡CCH2CH2CONHCH(CH3)CH2CH2CH2CH2CH3 (2) were synthesized and polymerized with a rhodium catalyst in CHCl3 to obtain cis-stereoregular poly(ω-alkynamide)s (poly(1) and poly(2)). Polarimetric, CD, and IR spectroscopic studies revealed that in solution the polymers adopted predominantly one-handed helical structures stabilized by intramolecular hydrogen bonds between the pendent amide groups. This behavior was similar to that of the corresponding poly(N-alkynylamide) counterparts (poly(3) and poly(4)) reported previously, whereas the helical senses were opposite to each other. The helical structures of the poly(ω-alkynamide)s were stable upon heating similar to those of the poly(N-alkynylamide)s, but the solvent response was completely different. An increase in MeOH content in CHCl3/MeOH resulted in inversion of the predominant screw-sense for poly(1) and poly(2). Conversely, poly(3) was transformed into a random coil, and poly(4) maintained the predominant screw-sense irrespective of MeOH content. The solvent dependence of predominant screw-sense for poly(1) and poly(2) was reasonably explained by molecular orbital studies using the conductor-like screening model (COSMO).
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Affiliation(s)
- Yuji Suzuki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Nishikyo-ku, Kyoto 615-8510 (Japan)
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18
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Zhu YY, Yin TT, Li XL, Su M, Xue YX, Yu ZP, Liu N, Yin J, Wu ZQ. Synthesis and Chiroptical Properties of Helical Polyallenes Bearing Chiral Amide Pendants. Macromolecules 2014. [DOI: 10.1021/ma5019022] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuan-Yuan Zhu
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Ting-Ting Yin
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Xue-Liang Li
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Ming Su
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Ya-Xin Xue
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Zhi-Peng Yu
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Na Liu
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Jun Yin
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Zong-Quan Wu
- Department
of Polymer Science
and Engineering, School of Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
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19
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Yao L, Lu X, Chen S, Watkins JJ. Formation of Helical Phases in Achiral Block Copolymers by Simple Addition of Small Chiral Additives. Macromolecules 2014. [DOI: 10.1021/ma501714g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Li Yao
- Department
of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Xuemin Lu
- Department
of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, P. R. China
| | - Shuangshuang Chen
- School
of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, P. R. China
| | - James J. Watkins
- Department
of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
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20
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Reuther JF, Bhatt MP, Tian G, Batchelor BL, Campos R, Novak BM. Controlled Living Polymerization of Carbodiimides Using Versatile, Air-Stable Nickel(II) Initiators: Facile Incorporation of Helical, Rod-like Materials. Macromolecules 2014. [DOI: 10.1021/ma5009429] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James F. Reuther
- Department of Chemistry and Alan G. MacDiarmid NanoTech
Institute, University of Texas Dallas, Richardson, Texas 75080, United States
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Mahesh P. Bhatt
- Department of Chemistry and Alan G. MacDiarmid NanoTech
Institute, University of Texas Dallas, Richardson, Texas 75080, United States
| | - Gonglu Tian
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Benjamin L. Batchelor
- Department of Chemistry and Alan G. MacDiarmid NanoTech
Institute, University of Texas Dallas, Richardson, Texas 75080, United States
| | - Raymond Campos
- Department of Chemistry and Alan G. MacDiarmid NanoTech
Institute, University of Texas Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department of Chemistry and Alan G. MacDiarmid NanoTech
Institute, University of Texas Dallas, Richardson, Texas 75080, United States
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21
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Wang R, Li X, Bai J, Zhang J, Liu A, Wan X. Chiroptical and Thermotropic Properties of Helical Styrenic Polymers: Effect of Achiral Group. Macromolecules 2014. [DOI: 10.1021/ma500147z] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Rong Wang
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaofu Li
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jianwei Bai
- Polymer
Materials Research Center, College of Materials Science and Chemical
Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jie Zhang
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Anhua Liu
- Key
Laboratory of High Performance Ceramic Fibers of Ministry of Education,
College of Materials, Xiamen University, Xiamen 310065, China
| | - Xinhua Wan
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
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22
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Liu D, Li Y, Deng J, Yang W. Helix-sense-selective polymerization of achiral substituted acetylene in chiral micelles for preparing optically active polymer nanoparticles: Effects of chiral emulsifiers. POLYMER 2014. [DOI: 10.1016/j.polymer.2013.12.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Merten C, Reuther JF, DeSousa JD, Novak BM. Identification of the specific, shutter-like conformational reorientation in a chiroptical switching polycarbodiimide by VCD spectroscopy. Phys Chem Chem Phys 2014; 16:11456-60. [DOI: 10.1039/c4cp01226g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Reuther JF, Novak BM. Evidence of Entropy-Driven Bistability through 15N NMR Analysis of a Temperature- and Solvent-Induced, Chiroptical Switching Polycarbodiimide. J Am Chem Soc 2013; 135:19292-303. [DOI: 10.1021/ja4098803] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James F. Reuther
- Department
of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas Dallas, 800 West Campbell Road, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department
of Chemistry and Alan G. MacDiarmid NanoTech Institute, University of Texas Dallas, 800 West Campbell Road, Richardson, Texas 75080, United States
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25
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Bei-bei L, Wei L, Gan-hong D, Dan C, Jun L, Li-ming J, Zhi-quan S. DESIGN OF AN OPTICALLY ACTIVE POLYSTYRENE BEARING IMINE PENDANTS AND ITS ACID/BASE-TRIGGERED CHIROPTICAL SWITCH PROPERTY. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.13007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Budhathoki-Uprety J, Reuther JF, Novak BM. Determining the Regioregularity in Alkyne Polycarbodiimides and Their Orthogonal Modification of Side Chains To Yield Perfectly Alternating Functional Polymers. Macromolecules 2012. [DOI: 10.1021/ma301639m] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Januka Budhathoki-Uprety
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina
27695, United States
| | - James F. Reuther
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina
27695, United States
| | - Bruce M. Novak
- Department
of Chemistry and
the Alan G MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080-3021, United
States
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27
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Reuther JF, DeSousa JD, Novak BM. Direct Probing of Regioregularity for Polycarbodiimide Systems via 15N NMR Analysis. Macromolecules 2012. [DOI: 10.1021/ma301448b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- James F. Reuther
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina
27695, United States
| | - Joseph D. DeSousa
- Department
of Chemistry and
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department
of Chemistry and
Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75080, United States
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28
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Zhang D, Song C, Deng J, Yang W. Chiral Microspheres Consisting Purely of Optically Active Helical Substituted Polyacetylene: The First Preparation via Precipitation Polymerization and Application in Enantioselective Crystallization. Macromolecules 2012. [DOI: 10.1021/ma301250u] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Dongyue Zhang
- State Key Laboratory of Chemical
Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing
100029, China
| | - Ci Song
- State Key Laboratory of Chemical
Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing
100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical
Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing
100029, China
| | - Wantai Yang
- State Key Laboratory of Chemical
Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing
100029, China
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29
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DeSousa JD, Novak BM. Resolving the Regioregularity of Poly( N- n-hexyl- N'-phenylcarbodiimide) via Nitrogen-15 Labeling. ACS Macro Lett 2012; 1:672-675. [PMID: 35607085 DOI: 10.1021/mz3001836] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nitrogen-15 nuclear magnetic resonance (NMR) spectroscopy and infrared spectroscopy (IR) were performed on an isotope-enriched poly(N-n-hexyl-N'-phenylcarbodiimide) to determine directly the connectivity and regioregularity of a polymer. Up to this point, the imine, C═N, IR stretch at 1660-1620 cm-1 was thought to be a sufficient handle to elucidate the presence or absence of a regioregular microstructure; however, recent findings cast some uncertainties when expanded to all polycarbodiimides. Therefore, an enriched 15N NMR study was undertaken to unambiguously resolve that a N-n-hexyl-N'-phenylcarbodiimide, when polymerized with a 2,2,2-trifluoroethoxide trichlorotitanium(IV) catalyst in chloroform, will produce a completely regioregular polymer. The only regioisomer present is the one in which the phenyl pendant group is positioned on the imino-nitrogen. The study was expanded to a chiral, (R)-BINOL-Ti(IV)-diisopropoxide catalyst which revealed no change in the regioisomer or the degree of regioregularity. In addition to 15N NMR spectra, the IR imine stretch exhibited isotope shifts for poly(N-n-hexyl-N'-phenylcarbodiimide) when labeled on both imino- and amino-nitrogen or solely the imino-nitrogen of ∼11 cm-1; however, no shift was manifested when labeling was restricted to the amino-nitrogen.
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Affiliation(s)
- Joseph D. DeSousa
- Department of Chemistry and The Alan
G MacDiarmid NanoTech
Institute, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
| | - Bruce M. Novak
- Department of Chemistry and The Alan
G MacDiarmid NanoTech
Institute, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
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30
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Cui J, Zhang J, Wan X. Unexpected stereomutation dependence on the chemical structure of helical vinyl glycopolymers. Chem Commun (Camb) 2012; 48:4341-3. [DOI: 10.1039/c2cc00036a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Chen B, Deng J, Cui X, Yang W. Optically Active Helical Substituted Polyacetylenes as Chiral Seeding for Inducing Enantioselective Crystallization of Racemic N-(tert-Butoxycarbonyl)alanine. Macromolecules 2011. [DOI: 10.1021/ma2013628] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Bo Chen
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xin Cui
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Wantai Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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32
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Budhathoki-Uprety J, Novak BM. Synthesis of Alkyne-Functionalized Helical Polycarbodiimides and their Ligation to Small Molecules using ‘Click’ and Sonogashira Reactions. Macromolecules 2011. [DOI: 10.1021/ma200960e] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Januka Budhathoki-Uprety
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Bruce M. Novak
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
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33
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Kennemur JG, DeSousa JD, Martin JD, Novak BM. Reassessing the Regioregularity of N-(1-Naphthyl)-N′-(n-octadecyl)polycarbodiimide Using Solution Infrared Spectroscopy. Macromolecules 2011. [DOI: 10.1021/ma2005052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Justin G. Kennemur
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Joseph D. DeSousa
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - James D. Martin
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Bruce M. Novak
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
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36
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Song C, Li L, Wang F, Deng J, Yang W. Novel optically active helical poly(N-propargylthiourea)s: synthesis, characterization and complexing ability toward Fe(iii) ions. Polym Chem 2011. [DOI: 10.1039/c1py00457c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Jin XH, Wang J, Sun JK, Zhang HX, Zhang J. Protonation-Triggered Conversion between Single- and Triple-Stranded Helices with a Visible Fluorescence Change. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201005613] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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38
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Jin XH, Wang J, Sun JK, Zhang HX, Zhang J. Protonation-Triggered Conversion between Single- and Triple-Stranded Helices with a Visible Fluorescence Change. Angew Chem Int Ed Engl 2010; 50:1149-53. [DOI: 10.1002/anie.201005613] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Indexed: 11/08/2022]
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39
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Kennemur JG, Kilgore CA, Novak BM. Adjusting conformational switching behavior of helical polycarbodiimides through substituent induced polarity effects. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24484] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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