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Titolo:
Visualization of artificial lignin supramolecular structures
Autore:
Micic, M; Jeremic, M; Radotic, K; Mavers, M; Leblanc, RM;
Indirizzi:
Univ Miami, Dept Chem, Ctr Supramol Sci, Coral Gables, FL 33146 USA Univ Miami Coral Gables FL USA 33146 amol Sci, Coral Gables, FL 33146 USA Univ Miami, Dept Chem, Ctr Adv Microscopy, Coral Gables, FL 33146 USA UnivMiami Coral Gables FL USA 33146 croscopy, Coral Gables, FL 33146 USA Univ Belgrade, Fac Phys Chem, Belgrade, Yugoslavia Univ Belgrade Belgrade Yugoslavia , Fac Phys Chem, Belgrade, Yugoslavia Univ Belgrade, Ctr Multidisciplinary Studies, Belgrade, Yugoslavia Univ Belgrade Belgrade Yugoslavia plinary Studies, Belgrade, Yugoslavia Univ Miami, Dept Microbiol & Immunol, Coral Gables, FL 33146 USA Univ Miami Coral Gables FL USA 33146 Immunol, Coral Gables, FL 33146 USA
Titolo Testata:
SCANNING
fascicolo: 5, volume: 22, anno: 2000,
pagine: 288 - 294
SICI:
0161-0457(200009/10)22:5<288:VOALSS>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-MICROSCOPY;
Keywords:
lignin; biopolymers; dehydrogenate polymer; supramolecular structures; environmental scanning electron microscopy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Micic, M Univ Miami, Dept Chem, Ctr Supramol Sci, 1301 Mem Dr, Coral Gables, FL 33146 USA Univ Miami 1301 Mem Dr Coral Gables FL USA 33146 es, FL 33146 USA
Citazione:
M. Micic et al., "Visualization of artificial lignin supramolecular structures", SCANNING, 22(5), 2000, pp. 288-294

Abstract

In this paper we are presenting the results of our environmental scanning electron microscopy (ESEM) investigation of the lignin model compound-enzymatically polymerized coniferyl alcohol, also known as dehydrogenate polymer(DHP). The goals of this study were to visualize the supramolecular organization of DHP polymer on various substrates, namely graphite, mica, and glass, and to explore the influence of substrate surface properties and associated collective phenomena on the lignin self-assembled supramolecular structure. Based on results obtained with ESEM, combined with previously published results based on scanning tunneling microscopy (STM) and electron spin resonance (ESR) technique, we looked at Lignin structure ranging from a monomer on a fraction of nanometer scale to a large aggregate on a fraction of millimeter scale. therefore using six orders of magnitude range of size. Herein, we are presenting evidence that there are at least four different levels of the supramolecular structure of lignin, and that its supramolecular organization is well dependent on the substrate surface characteristics, such as hydrophobicity, delocalized orbitals, and surface-free entry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 22:24:38