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1
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Wilson BW, Parker AA, Gullion T. Determining the relative orientation between the chemical shift anisotropy and heteronuclear dipolar tensors in static solids by SEDOR NMR. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2016; 79:1-5. [PMID: 27690305 DOI: 10.1016/j.ssnmr.2016.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/07/2016] [Accepted: 09/18/2016] [Indexed: 06/06/2023]
Abstract
The measurement of the dipolar interaction between two spins provides the distance between nuclei. A better structural picture emerges when the distance is combined with the orientation of the internuclear vector in the principal axis system of the chemical shift anisotropy tensor. The SEDOR experiment is used on a static sample of alanine to show that the orientation of the vector connecting the nitrogen and carboxylate carbon nuclei can be accurately determined in the CSA PAS of the 13C carboxylate spin.
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Affiliation(s)
- Brendan W Wilson
- Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States
| | - Arlo A Parker
- Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States
| | - Terry Gullion
- Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States.
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2
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Ikai T, Wada Y, Takagi Y, Shinohara KI. Impact of a minority enantiomer on the polymerization of alanine-based isocyanides with an oligothiophene pendant. Polym Chem 2016. [DOI: 10.1039/c6py01351a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A synthetic polymer requiring a long-range homochiral sequence (>50 repeating units) to fold into a helical conformation has been prepared.
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Affiliation(s)
- Tomoyuki Ikai
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Yuya Wada
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Yugaku Takagi
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Ken-ichi Shinohara
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi 923-1292
- Japan
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3
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Ikai T, Takagi Y, Shinohara KI, Maeda K, Kanoh S. Synthesis of polyisocyanides bearing oligothiophene pendants: higher-order structural control through pendant framework design. Polym J 2015. [DOI: 10.1038/pj.2015.42] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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4
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Jiang ZQ, Xue YX, Chen JL, Yu ZP, Liu N, Yin J, Zhu YY, Wu ZQ. One-Pot Synthesis of Brush Copolymers Bearing Stereoregular Helical Polyisocyanides as Side Chains through Tandem Catalysis. Macromolecules 2014. [DOI: 10.1021/ma502283f] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zhi-Qiang Jiang
- Department
of Polymer Science
and Engineering, School of Chemistry and 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 Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Jia-Li Chen
- Department
of Polymer Science
and Engineering, School of Chemistry and 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 Chemistry and 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 Chemistry and 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 Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Yuan-Yuan Zhu
- Department
of Polymer Science
and Engineering, School of Chemistry and 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 Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
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5
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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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6
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Xue YX, Zhu YY, Gao LM, He XY, Liu N, Zhang WY, Yin J, Ding Y, Zhou H, Wu ZQ. Air-Stable (Phenylbuta-1,3-diynyl)palladium(II) Complexes: Highly Active Initiators for Living Polymerization of Isocyanides. J Am Chem Soc 2014; 136:4706-13. [DOI: 10.1021/ja5004747] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- 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
| | - 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
| | - Long-Mei Gao
- 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
| | - Xiao-Yue He
- 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
| | - Wu-Yi Zhang
- 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
| | - Yunsheng Ding
- 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
| | - Hongping Zhou
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230039, 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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7
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Schwartz E, Liégeois V, Koepf M, Bodis P, Cornelissen JJLM, Brocorens P, Beljonne D, Nolte RJM, Rowan AE, Woutersen S, Champagne B. Beta Sheets with a Twist: The Conformation of Helical Polyisocyanopeptides Determined by Using Vibrational Circular Dichroism. Chemistry 2013; 19:13168-74. [DOI: 10.1002/chem.201300073] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 05/07/2013] [Indexed: 11/10/2022]
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8
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Koepf M, Kitto HJ, Schwartz E, Kouwer PH, Nolte RJ, Rowan AE. Preparation and characterization of non-linear poly(ethylene glycol) analogs from oligo(ethylene glycol) functionalized polyisocyanopeptides. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.01.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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van Buul AM, Schwartz E, Brocorens P, Koepf M, Beljonne D, Maan JC, Christianen PCM, Kouwer PHJ, Nolte RJM, Engelkamp H, Blank K, Rowan AE. Stiffness versus architecture of single helical polyisocyanopeptides. Chem Sci 2013. [DOI: 10.1039/c3sc50552a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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10
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Gowda CM, Agarwal V, Kentgens APM. Sensitivity enhancement of double quantum NMR spectroscopy by modified CPMG. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2012; 223:11-19. [PMID: 22960669 DOI: 10.1016/j.jmr.2012.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 07/15/2012] [Accepted: 07/16/2012] [Indexed: 06/01/2023]
Abstract
A modified Carr-Purcell-Meiboom-Gill (CPMG) sequence for sensitivity enhancement of dipolar coupled homonuclear spin pairs in static solid-state NMR is presented. The modified CPMG block uses the Hahn-solid-Hahn echo as basic element of the CPMG echo train to refocus the homonuclear dipolar coupling and chemical shift anisotropy. The new CPMG sequence is dubbed as Hahn-solid-Hahn Carr-Purcell-Meiboom-Gill (HSHCPMG). We demonstrate a gain in signal to noise ratio of approximately 4.2 using HSHCPMG sequence in double quantum filtered CP experiment for 5%-(13)C(2)-(15)N-glycine. The resulting gain in sensitivity in the spikelet spectrum does not compromise the anisotropic information that is available from static NMR lineshapes. As an example, relative orientation angles of chemical shift anisotropy tensors for the alpha and carbonyl carbons in glycine are determined from the 2D DOQSY experiment recorded with the HSHCPMG block in the acquisition dimension. The resultant relative orientation angles of the two CSA tensors are compared to those obtained from 2D DOQSY experiment acquired without sensitivity enhancement as well as to the data as available from single crystal NMR experiments.
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Affiliation(s)
- Chandrakala M Gowda
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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11
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López-Duarte I, Martínez-Díaz MV, Schwartz E, Koepf M, Kouwer PHJ, Rowan AE, Nolte RJM, Torres T. Postfunctionalization of Helical Polyisocyanopeptides with Phthalocyanine Chromophores by “Click Chemistry”. Chempluschem 2012. [DOI: 10.1002/cplu.201200087] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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