Slow dynamics in glassy methyl α-l-rhamnopyranoside studied by 1D NMR exchange experiments

Literature Information

Publication Date 2007-11-15
DOI 10.1039/B711113D
Impact Factor 3.676
Authors

Detlef Reichert, Michael Kovermann, Nicole Hunter, David Hughes, Ovidiu Pascui, Peter Belton


View Original

Abstract

It is widely known that the ability of sugar glasses to preserve anhydrobiotic systems in nature is important but the process is not yet fully understood. Molecular motions in the glassy state are likely to be important in the process but until now have remained largely uncharacterized. Here we describe the use of 1D 13C NMR exchange experiments using CODEX (centreband only detection of exchange) methods to study the dynamics of the well characterised model glassy monosaccharide, methyl α-L-rhamnopyranoside. The glass was prepared by fast cooling of a melt inside an NMR rotor. Molecular motions in the range of seconds to milliseconds were observed in the glass, whereas identical experiments using the crystalline material displayed no observable motions in the time-scales covered by the experiment. At 13 to 14 K above Tg the nature of the motion in the glass changed probably due to the onset of larger scale reorientation. A bimodal distribution of jump angles combined with a broad distribution of correlation times was found to best represent the observed motions.

Related Literature

Design and synthesis of a novel anchoring ligand for highly efficient thin film dye-sensitized solar cells

Amaresh Mishra, Nuttapol Pootrakulchote, Markus K. R. Fischer, Cedric Klein, Md. K. Nazeeruddin, Shaik M. Zakeeruddin, Peter Bäuerle, Michael Grätzel

2009-10-29 Communication

DOI: 10.1039/B912506J

Contents

Front/Back Matter

DOI: 10.1039/C0OB90046J

Synthesis, characterization, and self-assembled nanofibers of carbohydrate-functionalized mono- and di(2,2′:6′,2″-terpyridinyl)arenes

Yi-Tsu Chan, Charles N. Moorefield, George R. Newkome

2009-10-20 Communication

DOI: 10.1039/B914743H

First time-resolved EPR observation of Nafion photochemistry

Fosca Conti, Enrico Negro, Vito Di Noto

2009-10-13 Communication

DOI: 10.1039/B913870F

Silver-catalysed protodecarboxylation of ortho-substituted benzoic acids

Josep Cornella, Carolina Sanchez, David Banawa, Igor Larrosa

2009-10-28 Communication

DOI: 10.1039/B916646G

Photosensitized cleavage of plasmidic DNA by norharmane, a naturally occurring β-carboline

M. Micaela Gonzalez, Magali Pellon-Maison, Matias A. Ales-Gandolfo, Maria R. Gonzalez-Baró, Rosa Erra-Balsells, Franco M. Cabrerizo

2010-04-09 Paper

DOI: 10.1039/C002235G

Redox rich dicobalt macrocycles as templates for multi-electron transformations

Nathaniel K. Szymczak, Louise A. Berben, Jonas C. Peters

2009-10-06 Communication

DOI: 10.1039/B913946J

Magnetic chiral ionic liquids derived from amino acids

Min Li, Sergio L. De Rooy, David K. Bwambok, Bilal El-Zahab, John F. DiTusa, Isiah M. Warner

2009-10-26 Communication

DOI: 10.1039/B917683G

Front cover

Cover

DOI: 10.1039/C0OB90044C

You might also like

Compound Q&A

What industries use (1R,3S)-1,3-Cyclopentanediol (CAS: 16326-97-9)?

(1R,3S)-1,3-Cyclopentanediol finds applications in various industries. In the ph...

16326-97-9(1R,3S)-1,3-Cyclopen...
Compound Q&A

What precautions should be taken when handling N'-[4-(Dimethylamino)phenyl]-N,N-dimethyl-1,4-benzenediamine (CAS: 637-31-0)?

When handling N'-[4-(Dimethylamino)phenyl]-N,N-dimethyl-1,4-benzenediamine, it i...

637-31-0N'-[4-(Dimethylamino...
Compound Q&A

Are there alternatives to 5-(2,4-Difluorophenyl)-2-methoxypyrimidine (CAS: 1352318-16-1) in synthesis?

There are several alternatives to 5-(2,4-Difluorophenyl)-2-methoxypyrimidine in ...

1352318-16-15-(2,4-Difluoropheny...
Compound Q&A

What regulatory guidelines apply to 1-(3-Methoxyphenoxy)propan-2-ol (CAS: 382141-68-6)?

1-(3-Methoxyphenoxy)propan-2-ol (CAS: 382141-68-6) must comply with the Globally...

382141-68-61-(3-Methoxyphenoxy)...
Compound Q&A

Is Tetrodotoxin Citrate (CAS: 18660-81-6) safe?

Tetrodotoxin Citrate is extremely dangerous and should be handled with extreme c...

18660-81-6Tetrodotoxin Citrate
Compound Q&A

What are the main uses of 2-Methyl-2-propanyl [(1R,3S)-3-hydroxycyclopentyl]carbamate (CAS: 225641-84-9)?

2-Methyl-2-propanyl [(1R,3S)-3-hydroxycyclopentyl]carbamate (CAS: 225641-84-9) i...

225641-84-92-Methyl-2-propanyl ...
Compound Q&A

How should waste containing 4-(2-Hydroxyhexafluoroisopropyl)Benzoic Acid (CAS: 16261-80-6) be handled?

Waste containing 4-(2-Hydroxyhexafluoroisopropyl)Benzoic Acid (CAS: 16261-80-6) ...

16261-80-64-(2-Hydroxyhexafluo...
Compound Q&A

How is 2-Methyl-2-proanyl {(2S)-1-[(benzyloxy)amino]-3-hydroxy-3-methyl-1-oxo-2-butanyl}carbamate (CAS: 102507-19-7) typically synthesized?

2-Methyl-2-proanyl {(2S)-1-[(benzyloxy)amino]-3-hydroxy-3-methyl-1-oxo-2-butanyl...

102507-19-72-Methyl-2-propanyl ...
Compound Q&A

What is Benzeneethanamine, α-ethyl-, hydrochloride (1:1) (CAS: 20735-15-3)?

Benzeneethanamine, α-ethyl-, hydrochloride (1:1) is an organic compound with the...

20735-15-3Benzeneethanamine, α...
Compound Q&A

Are there alternatives to 3-{(E)-[4-(Dimethylamino)phenyl]diazenyl}benzoic acid (CAS: 20691-84-3) in synthesis?

In the synthesis of compounds similar to 3-{(E)-[4-(Dimethylamino)phenyl]diazeny...

20691-84-33-{(E)-[4-(Dimethyla...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.