Abstract
We have recently reported the formation of developed nanofibers upon mixing ATP and certain cationic cyanine dyes. This combination is selected through the combinatorial mixing of ATP and many cationic molecules, allowing to develop nanofibers consisted of ATP and cyanine dye molecules1). In this work, the molecular pairing approach is applied to amino acids. As amino acids do not specifically interact with cationic dyes, they are first converted to anionic isoindole derivatives by the reaction with o-phthalaldehyde and 2-mercaptoethanesulfonic acid. When an isoindole product of gultamic acid was mixed with cationic cyanine dyes, immediate color change occurred from pink to orange. The blue-shifted absorption of cyanine dyes implies the formation of developed chiral assemblies with excitation energy delocalized among the parallel-aligned chromophores. Transmission electron microscopy revealed the formation of nanofibers with ca. 50 nm in width and several micrometers in length. These spectroscopic properties and nano structures of the mixtures changed depending on the chemical structures of amino acids.
| Original language | English |
|---|---|
| Title of host publication | 55th SPSJ Symposium on Macromolecules |
| Pages | 4739-4740 |
| Number of pages | 2 |
| Volume | 55 |
| Edition | 2 |
| Publication status | Published - 2006 |
| Event | 55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan Duration: Sep 20 2006 → Sep 22 2006 |
Other
| Other | 55th Society of Polymer Science Japan Symposium on Macromolecules |
|---|---|
| Country | Japan |
| City | Toyama |
| Period | 9/20/06 → 9/22/06 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Reading molecular structural Information of amino acids through an extended molecular pairing technique. / Shiraki, Tomohiro; Morikawa, Masa-Aki; Kimizuka, Nobuo.
55th SPSJ Symposium on Macromolecules. Vol. 55 2. ed. 2006. p. 4739-4740.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Reading molecular structural Information of amino acids through an extended molecular pairing technique
AU - Shiraki, Tomohiro
AU - Morikawa, Masa-Aki
AU - Kimizuka, Nobuo
PY - 2006
Y1 - 2006
N2 - We have recently reported the formation of developed nanofibers upon mixing ATP and certain cationic cyanine dyes. This combination is selected through the combinatorial mixing of ATP and many cationic molecules, allowing to develop nanofibers consisted of ATP and cyanine dye molecules1). In this work, the molecular pairing approach is applied to amino acids. As amino acids do not specifically interact with cationic dyes, they are first converted to anionic isoindole derivatives by the reaction with o-phthalaldehyde and 2-mercaptoethanesulfonic acid. When an isoindole product of gultamic acid was mixed with cationic cyanine dyes, immediate color change occurred from pink to orange. The blue-shifted absorption of cyanine dyes implies the formation of developed chiral assemblies with excitation energy delocalized among the parallel-aligned chromophores. Transmission electron microscopy revealed the formation of nanofibers with ca. 50 nm in width and several micrometers in length. These spectroscopic properties and nano structures of the mixtures changed depending on the chemical structures of amino acids.
AB - We have recently reported the formation of developed nanofibers upon mixing ATP and certain cationic cyanine dyes. This combination is selected through the combinatorial mixing of ATP and many cationic molecules, allowing to develop nanofibers consisted of ATP and cyanine dye molecules1). In this work, the molecular pairing approach is applied to amino acids. As amino acids do not specifically interact with cationic dyes, they are first converted to anionic isoindole derivatives by the reaction with o-phthalaldehyde and 2-mercaptoethanesulfonic acid. When an isoindole product of gultamic acid was mixed with cationic cyanine dyes, immediate color change occurred from pink to orange. The blue-shifted absorption of cyanine dyes implies the formation of developed chiral assemblies with excitation energy delocalized among the parallel-aligned chromophores. Transmission electron microscopy revealed the formation of nanofibers with ca. 50 nm in width and several micrometers in length. These spectroscopic properties and nano structures of the mixtures changed depending on the chemical structures of amino acids.
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UR - http://www.scopus.com/inward/citedby.url?scp=33846141551&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33846141551
VL - 55
SP - 4739
EP - 4740
BT - 55th SPSJ Symposium on Macromolecules
ER -