Solid state 13C nuclear magnetic resonance for polyguanidines

被引：10
|
作者：
Lim, AR [1 ]
Kim, JH
Novak, BM
机构：
[1] Jeonju Univ, Dept Phys, Jeonju 560759, South Korea
[2] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA
来源：
POLYMER | 2000年 / 41卷 / 07期
关键词：
structural analysis; NMR spectroscopy; spin-lattice relaxation;
D O I：
10.1016/S0032-3861(99)00431-0
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The structure and variations in dynamic motions of three polyguanidines possessing different side chains were studied by C-13 CP/MAS NMR. From these results, the structures of the polyguanidines were confirmed, and the C-13 spin-lattice relaxation times in the rotating frame were measured. The polyguanidine backbone mobilities were measured as a function of size and chemical make up (aliphatic vs. aromatic). The main-chain carbon of polyguanidine (II) with aromatic side chains has a higher activation energy, 23.12 KJ/mol, than the polyguanidine (1) with aliphatic side chains, 19.76 KJ/mol. Also, the activation energy of the main-chain carbons of polyguanidine (II) and (LII) with aromatic side chains was found to depend on the size of side chains. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2431 / 2438
页数：8
相关论文
共 50 条
  • [41] Protein solid-state NMR resonance assignments from (13C, 13C) correlation spectroscopy
    Seidel, K
    Lange, A
    Becker, S
    Hughes, CE
    Heise, H
    Baldus, M
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2004, 6 (22) : 5090 - 5093
  • [42] Structure and composition of hard coke deposited on industrial fluid catalytic cracking catalysts by solid state 13C nuclear magnetic resonance
    Behera, Babita
    Gupta, Piyush
    Ray, Siddharth S.
    APPLIED CATALYSIS A-GENERAL, 2013, 466 : 123 - 130
  • [43] Degradation of sulfur mustard on moist sand as determined by 13C solid-state magic angle spinning nuclear magnetic resonance
    Brevett, Carol A. S.
    Sumpter, Kenneth B.
    Wagner, George W.
    SPECTROSCOPY LETTERS, 2008, 41 (01) : 29 - 39
  • [44] Investigation into the Effect of Heteroatom Content on Kerogen Structure Using Advanced 13C Solid-State Nuclear Magnetic Resonance Spectroscopy
    Chu, Wenying
    Cao, Xiaoyan
    Schmidt-Rohr, Klaus
    Birdwell, Justin E.
    Mao, Jingdong
    ENERGY & FUELS, 2019, 33 (02) : 645 - 653
  • [45] Polymorphic Characterization of Pharmaceutical Solids, Donepezil Hydrochloride, by 13C CP/MAS Solid-State Nuclear Magnetic Resonance Spectroscopy
    Park, Tae-Joon
    Ko, Dong-Hyun
    Kim, Young Ju
    Kim, Yongae
    BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2009, 30 (09): : 2007 - 2010
  • [46] Advanced New Relaxation Filter-Selective Signal Excitation Methods for 13C Solid-State Nuclear Magnetic Resonance
    Asada, Mamiko
    Nemoto, Takayuki
    Mimura, Hisashi
    Sako, Kazuhiro
    ANALYTICAL CHEMISTRY, 2014, 86 (20) : 10091 - 10098
  • [47] Characterization of oleic acid and propranolol oleate mesomorphism using 13C solid-state nuclear magnetic resonance spectroscopy (SSNMR)
    Crowley, KJ
    Forbes, RT
    York, P
    Apperley, DC
    Nyqvist, H
    Camber, O
    JOURNAL OF PHARMACEUTICAL SCIENCES, 2000, 89 (10) : 1286 - 1295
  • [48] Low temperature studies of amorphous, interfacial, and crystalline phases in asphalts using solid-state 13C nuclear magnetic resonance
    Netzel, DA
    ASPHALT MIXTURE COMPONENTS, 1998, (1638): : 23 - 30
  • [49] Structural characterization of ion-vapor deposited hydrogenated amorphous carbon coatings by solid state 13C nuclear magnetic resonance
    Xu, Jiao
    Watanabe, Sadayuki
    Hayashi, Hideo
    Kawaguchi, Masahiro
    Kato, Takahisa
    JOURNAL OF APPLIED PHYSICS, 2014, 115 (01)
  • [50] Following the decomposition of ryegrass labelled with 13C and 15N in soil by solid-state nuclear magnetic resonance spectroscopy
    Hopkins, DW
    Chudek, JA
    Webster, EA
    Barraclough, D
    EUROPEAN JOURNAL OF SOIL SCIENCE, 1997, 48 (04) : 623 - 631
12345