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Cover Picture: Direct Correlation between Molecular Cross‐linking and Macroscopic Mechanical Properties for Green Solids of Deoxyribonucleic Acids (ChemNanoMat 11/2016)
Author(s) -
Morimitsu Yuma,
Matsuno Hisao,
Ohta Noboru,
Sekiguchi Hiroshi,
Tanaka Keiji
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600257
Subject(s) - dna , double stranded , crystallography , aqueous solution , solvent , chemistry , materials science , polymer chemistry , organic chemistry , biochemistry
Double‐stranded deoxyribonucleic acids (DNAs) were intermolecularly cross‐linked using 2,5‐hexanedione based on reductive amination induced by 2‐picoline borane in aqueous phase. Atomic force microscopy revealed that while DNA chains near cross‐linking points were denatured to single‐strands, DNA chains not near cross‐linking points maintained B‐form double‐strands, which is the most typical conformation. A transparent, self‐supported, and mechanically toughened solid film was obtained from the cross‐linked DNAs by a simple solvent‐casting method. More information can be found in the Communication by H. Matsuno, K. Tanaka et al. on page 1023 in Issue 11, 2016 (DOI: 10.1002/cnma.201600222).