Reversing the structural chirality of cellulosic nanomaterials

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Reversing the structural chirality of cellulosic nanomaterials. / Conley, Kevin M.; Godbout, Louis; Whitehead, M. A.(Tony); van de Ven, Theo G.M.

In: Cellulose, Vol. 24, No. 12, 01.12.2017, p. 5455-5462.

Research output: Contribution to journalArticle

Harvard

Conley, KM, Godbout, L, Whitehead, MAT & van de Ven, TGM 2017, 'Reversing the structural chirality of cellulosic nanomaterials', Cellulose, vol. 24, no. 12, pp. 5455-5462. https://doi.org/10.1007/s10570-017-1533-1

APA

Conley, K. M., Godbout, L., Whitehead, M. A. T., & van de Ven, T. G. M. (2017). Reversing the structural chirality of cellulosic nanomaterials. Cellulose, 24(12), 5455-5462. https://doi.org/10.1007/s10570-017-1533-1

Vancouver

Author

Conley, Kevin M. ; Godbout, Louis ; Whitehead, M. A.(Tony) ; van de Ven, Theo G.M. / Reversing the structural chirality of cellulosic nanomaterials. In: Cellulose. 2017 ; Vol. 24, No. 12. pp. 5455-5462.

Bibtex - Download

@article{0f3caf4c119748a4a510c3e576009707,
title = "Reversing the structural chirality of cellulosic nanomaterials",
abstract = "Nature organizes cellulose, a linear polysaccharide of D-glucose and an important component of plants and trees, into intricate structures with twists in the trunks of trees, microfibrils within cell walls, and at the nanoscale. Manipulating the hierarchical organization of materials requires control down to the molecular level. In computational models cellulose nanocrystals twist, and Quantum Mechanical models have shown recently that chains at the surface of nanocrystals are right-handed, while the interior chains are mostly left-handed. Here we provide experimental evidence showing the induced circular dichroism of two optical dyes reverses when adsorbed onto thin cellulose nanocrystals. The reversal in optical activity is consistent with earlier TD-DFT B3LYP 6-31G calculations of the induced optical activity of Congo red adsorbed onto twisted 1 0 0 crystal surfaces of cellulose and demonstrates control of the chiral molecular interactions at the nanocrystal surface. The results suggest it may be possible to reverse the structural twist handedness of the nanocrystal itself and build chirality-dependent hierarchical supramolecular structures from cellulose.",
keywords = "Cellulose nanocrystals, Chirality, Circular dichroism, Twisted crystal",
author = "Conley, {Kevin M.} and Louis Godbout and Whitehead, {M. A.(Tony)} and {van de Ven}, {Theo G.M.}",
year = "2017",
month = "12",
day = "1",
doi = "10.1007/s10570-017-1533-1",
language = "English",
volume = "24",
pages = "5455--5462",
journal = "Cellulose",
issn = "0969-0239",
number = "12",

}

RIS - Download

TY - JOUR

T1 - Reversing the structural chirality of cellulosic nanomaterials

AU - Conley, Kevin M.

AU - Godbout, Louis

AU - Whitehead, M. A.(Tony)

AU - van de Ven, Theo G.M.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Nature organizes cellulose, a linear polysaccharide of D-glucose and an important component of plants and trees, into intricate structures with twists in the trunks of trees, microfibrils within cell walls, and at the nanoscale. Manipulating the hierarchical organization of materials requires control down to the molecular level. In computational models cellulose nanocrystals twist, and Quantum Mechanical models have shown recently that chains at the surface of nanocrystals are right-handed, while the interior chains are mostly left-handed. Here we provide experimental evidence showing the induced circular dichroism of two optical dyes reverses when adsorbed onto thin cellulose nanocrystals. The reversal in optical activity is consistent with earlier TD-DFT B3LYP 6-31G calculations of the induced optical activity of Congo red adsorbed onto twisted 1 0 0 crystal surfaces of cellulose and demonstrates control of the chiral molecular interactions at the nanocrystal surface. The results suggest it may be possible to reverse the structural twist handedness of the nanocrystal itself and build chirality-dependent hierarchical supramolecular structures from cellulose.

AB - Nature organizes cellulose, a linear polysaccharide of D-glucose and an important component of plants and trees, into intricate structures with twists in the trunks of trees, microfibrils within cell walls, and at the nanoscale. Manipulating the hierarchical organization of materials requires control down to the molecular level. In computational models cellulose nanocrystals twist, and Quantum Mechanical models have shown recently that chains at the surface of nanocrystals are right-handed, while the interior chains are mostly left-handed. Here we provide experimental evidence showing the induced circular dichroism of two optical dyes reverses when adsorbed onto thin cellulose nanocrystals. The reversal in optical activity is consistent with earlier TD-DFT B3LYP 6-31G calculations of the induced optical activity of Congo red adsorbed onto twisted 1 0 0 crystal surfaces of cellulose and demonstrates control of the chiral molecular interactions at the nanocrystal surface. The results suggest it may be possible to reverse the structural twist handedness of the nanocrystal itself and build chirality-dependent hierarchical supramolecular structures from cellulose.

KW - Cellulose nanocrystals

KW - Chirality

KW - Circular dichroism

KW - Twisted crystal

UR - http://www.scopus.com/inward/record.url?scp=85031918659&partnerID=8YFLogxK

U2 - 10.1007/s10570-017-1533-1

DO - 10.1007/s10570-017-1533-1

M3 - Article

VL - 24

SP - 5455

EP - 5462

JO - Cellulose

JF - Cellulose

SN - 0969-0239

IS - 12

ER -

ID: 17109585