Quantum dots arrangement and energy transfer control via charge-transfer complex achieved on poly (phenylene ethynylene)/schizophyllan nanowires

Tomohiro Shiraki, Shuichi Haraguchi, Youichi Tsuchiya, Seiji Shinkai

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Assemblies of organic and inorganic compounds in the nanoscale region have contributed to the development of novel functional materials toward future applications, including sensors and opto-electronics. We succeed in fabricating hybrid nanowires composed of a conjugated polymer and semiconductor quantum dots (QDs) by a supramolecular assembly technique. The 1-D fashion of the nanowire structure is obtained by the polymer wrap-ping of cationic poly(phenylene ethynylene) (PPE) with helix-forming polysaccharide schizophyllan (SPG). The electrostatic interaction between cationic PPE and anionic QDs affords the nanowires decorated with QDs. Upon addition of an acceptor molecule, tetranitrofluorenone (TNF), the chargetransfer (CT) complex between PPE and TNF is formed, resulting in energy transfer from the QDs to PPE arising from the induced spectral overlap. Furthermore, the employment of the conjugated polymer allows highly sensitive quenching of the QD's emission by raising the transmission efficiency to the CT complexed electron deficient sites along the polymer backbone.

Original languageEnglish
Pages (from-to)1434-1441
Number of pages8
JournalChemistry - An Asian Journal
Volume4
Issue number9
DOIs
Publication statusPublished - Sep 1 2009
Externally publishedYes

Fingerprint

Sizofiran
Nanowires
Quantum Dots
Energy Transfer
Energy transfer
Semiconductor quantum dots
Charge transfer
Polymers
Conjugated polymers
Inorganic compounds
Semiconductors
Functional materials
Coulomb interactions
Static Electricity
Organic compounds
Polysaccharides
Quenching
Electronic equipment
Electrons
Molecules

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Medicine(all)

Cite this

Quantum dots arrangement and energy transfer control via charge-transfer complex achieved on poly (phenylene ethynylene)/schizophyllan nanowires. / Shiraki, Tomohiro; Haraguchi, Shuichi; Tsuchiya, Youichi; Shinkai, Seiji.

In: Chemistry - An Asian Journal, Vol. 4, No. 9, 01.09.2009, p. 1434-1441.

Research output: Contribution to journalArticle

@article{6c81a5e9122d4fcfa68e730c71d930bf,
title = "Quantum dots arrangement and energy transfer control via charge-transfer complex achieved on poly (phenylene ethynylene)/schizophyllan nanowires",
abstract = "Assemblies of organic and inorganic compounds in the nanoscale region have contributed to the development of novel functional materials toward future applications, including sensors and opto-electronics. We succeed in fabricating hybrid nanowires composed of a conjugated polymer and semiconductor quantum dots (QDs) by a supramolecular assembly technique. The 1-D fashion of the nanowire structure is obtained by the polymer wrap-ping of cationic poly(phenylene ethynylene) (PPE) with helix-forming polysaccharide schizophyllan (SPG). The electrostatic interaction between cationic PPE and anionic QDs affords the nanowires decorated with QDs. Upon addition of an acceptor molecule, tetranitrofluorenone (TNF), the chargetransfer (CT) complex between PPE and TNF is formed, resulting in energy transfer from the QDs to PPE arising from the induced spectral overlap. Furthermore, the employment of the conjugated polymer allows highly sensitive quenching of the QD's emission by raising the transmission efficiency to the CT complexed electron deficient sites along the polymer backbone.",
author = "Tomohiro Shiraki and Shuichi Haraguchi and Youichi Tsuchiya and Seiji Shinkai",
year = "2009",
month = "9",
day = "1",
doi = "10.1002/asia.200900175",
language = "English",
volume = "4",
pages = "1434--1441",
journal = "Chemistry - An Asian Journal",
issn = "1861-4728",
publisher = "John Wiley and Sons Ltd",
number = "9",

}

TY - JOUR

T1 - Quantum dots arrangement and energy transfer control via charge-transfer complex achieved on poly (phenylene ethynylene)/schizophyllan nanowires

AU - Shiraki, Tomohiro

AU - Haraguchi, Shuichi

AU - Tsuchiya, Youichi

AU - Shinkai, Seiji

PY - 2009/9/1

Y1 - 2009/9/1

N2 - Assemblies of organic and inorganic compounds in the nanoscale region have contributed to the development of novel functional materials toward future applications, including sensors and opto-electronics. We succeed in fabricating hybrid nanowires composed of a conjugated polymer and semiconductor quantum dots (QDs) by a supramolecular assembly technique. The 1-D fashion of the nanowire structure is obtained by the polymer wrap-ping of cationic poly(phenylene ethynylene) (PPE) with helix-forming polysaccharide schizophyllan (SPG). The electrostatic interaction between cationic PPE and anionic QDs affords the nanowires decorated with QDs. Upon addition of an acceptor molecule, tetranitrofluorenone (TNF), the chargetransfer (CT) complex between PPE and TNF is formed, resulting in energy transfer from the QDs to PPE arising from the induced spectral overlap. Furthermore, the employment of the conjugated polymer allows highly sensitive quenching of the QD's emission by raising the transmission efficiency to the CT complexed electron deficient sites along the polymer backbone.

AB - Assemblies of organic and inorganic compounds in the nanoscale region have contributed to the development of novel functional materials toward future applications, including sensors and opto-electronics. We succeed in fabricating hybrid nanowires composed of a conjugated polymer and semiconductor quantum dots (QDs) by a supramolecular assembly technique. The 1-D fashion of the nanowire structure is obtained by the polymer wrap-ping of cationic poly(phenylene ethynylene) (PPE) with helix-forming polysaccharide schizophyllan (SPG). The electrostatic interaction between cationic PPE and anionic QDs affords the nanowires decorated with QDs. Upon addition of an acceptor molecule, tetranitrofluorenone (TNF), the chargetransfer (CT) complex between PPE and TNF is formed, resulting in energy transfer from the QDs to PPE arising from the induced spectral overlap. Furthermore, the employment of the conjugated polymer allows highly sensitive quenching of the QD's emission by raising the transmission efficiency to the CT complexed electron deficient sites along the polymer backbone.

UR - http://www.scopus.com/inward/record.url?scp=69649101128&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69649101128&partnerID=8YFLogxK

U2 - 10.1002/asia.200900175

DO - 10.1002/asia.200900175

M3 - Article

C2 - 19629958

AN - SCOPUS:69649101128

VL - 4

SP - 1434

EP - 1441

JO - Chemistry - An Asian Journal

JF - Chemistry - An Asian Journal

SN - 1861-4728

IS - 9

ER -