Polypeptides-induced self-aggregation and tuning of emission properties of luminescent complexes

Toshiyuki Moriuchi; Masahiro Yamada; Kazuki Yoshii; Chiaki Katano; Toshikazu Hirao

doi:10.1002/masy.201200003

Polypeptides-induced self-aggregation and tuning of emission properties of luminescent complexes

Toshiyuki Moriuchi, Masahiro Yamada, Kazuki Yoshii, Chiaki Katano, Toshikazu Hirao

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The assembling of anionic [Au(CN) ₂] ^- spatially along cationic β-sheeted poly-L-lysine (P(Lys)) through electrostatic and aurophilic bonding interactions was demonstrated to form the luminescent [Au(CN) ₂] ^- aggregate, wherein negatively charged [Au(CN) ₂] ^- was found to stabilize the β-sheet structure by suppressing repulsion between the positively charged side chains. Poly-L-glutamic acid (P(Glu)) bearing multiple negatively charged side chains was performed to serve as a polymeric spatially aligned scaffold for aggregation of the positively charged platinum(II) complexes [Pt(trpy)C≡CR](OTf) (trpy = 2,2′,6′,2″-terpyridine; R = Ph (PtH), C ₆H ₄C ₁₂H ₂₅-p (PtC ₁₂)) through electrostatic interaction, resulting in tunable emission properties. The introduction of the cationic luminescent iridium(III) and ruthenium(II) complexes into P(Glu) as a polymeric scaffold, wherein control of the conformational change of P(Glu) was achieved, was also allowed to induce the tuning of the emission properties and energy transfer in aqueous media.

Original language	English
Pages (from-to)	206-214
Number of pages	9
Journal	Macromolecular Symposia
Volume	317-318
Issue number	1
DOIs	https://doi.org/10.1002/masy.201200003
Publication status	Published - 2012 Aug 1

Keywords

aggregation
emission
gold(I) complex
iridium(III) complex
metallophilic interaction
platinum(II) complex
poly-L-glutamic acid
poly-L-lysine
ruthenium(II) complex
self-association

ASJC Scopus subject areas

Condensed Matter Physics
Organic Chemistry
Polymers and Plastics
Materials Chemistry

Access to Document

10.1002/masy.201200003

Cite this

@article{686d43e49edb4938bdf94ee132055fe6,

title = "Polypeptides-induced self-aggregation and tuning of emission properties of luminescent complexes",

abstract = "The assembling of anionic [Au(CN) 2] - spatially along cationic β-sheeted poly-L-lysine (P(Lys)) through electrostatic and aurophilic bonding interactions was demonstrated to form the luminescent [Au(CN) 2] - aggregate, wherein negatively charged [Au(CN) 2] - was found to stabilize the β-sheet structure by suppressing repulsion between the positively charged side chains. Poly-L-glutamic acid (P(Glu)) bearing multiple negatively charged side chains was performed to serve as a polymeric spatially aligned scaffold for aggregation of the positively charged platinum(II) complexes [Pt(trpy)C≡CR](OTf) (trpy = 2,2′,6′,2″-terpyridine; R = Ph (PtH), C 6H 4C 12H 25-p (PtC 12)) through electrostatic interaction, resulting in tunable emission properties. The introduction of the cationic luminescent iridium(III) and ruthenium(II) complexes into P(Glu) as a polymeric scaffold, wherein control of the conformational change of P(Glu) was achieved, was also allowed to induce the tuning of the emission properties and energy transfer in aqueous media.",

keywords = "aggregation, emission, gold(I) complex, iridium(III) complex, metallophilic interaction, platinum(II) complex, poly-L-glutamic acid, poly-L-lysine, ruthenium(II) complex, self-association",

author = "Toshiyuki Moriuchi and Masahiro Yamada and Kazuki Yoshii and Chiaki Katano and Toshikazu Hirao",

year = "2012",

month = aug,

day = "1",

doi = "10.1002/masy.201200003",

language = "English",

volume = "317-318",

pages = "206--214",

journal = "Macromolecular Symposia",

issn = "1022-1360",

publisher = "Wiley-VCH Verlag",

number = "1",

}

TY - JOUR

T1 - Polypeptides-induced self-aggregation and tuning of emission properties of luminescent complexes

AU - Moriuchi, Toshiyuki

AU - Yamada, Masahiro

AU - Yoshii, Kazuki

AU - Katano, Chiaki

AU - Hirao, Toshikazu

PY - 2012/8/1

Y1 - 2012/8/1

N2 - The assembling of anionic [Au(CN) 2] - spatially along cationic β-sheeted poly-L-lysine (P(Lys)) through electrostatic and aurophilic bonding interactions was demonstrated to form the luminescent [Au(CN) 2] - aggregate, wherein negatively charged [Au(CN) 2] - was found to stabilize the β-sheet structure by suppressing repulsion between the positively charged side chains. Poly-L-glutamic acid (P(Glu)) bearing multiple negatively charged side chains was performed to serve as a polymeric spatially aligned scaffold for aggregation of the positively charged platinum(II) complexes [Pt(trpy)C≡CR](OTf) (trpy = 2,2′,6′,2″-terpyridine; R = Ph (PtH), C 6H 4C 12H 25-p (PtC 12)) through electrostatic interaction, resulting in tunable emission properties. The introduction of the cationic luminescent iridium(III) and ruthenium(II) complexes into P(Glu) as a polymeric scaffold, wherein control of the conformational change of P(Glu) was achieved, was also allowed to induce the tuning of the emission properties and energy transfer in aqueous media.

AB - The assembling of anionic [Au(CN) 2] - spatially along cationic β-sheeted poly-L-lysine (P(Lys)) through electrostatic and aurophilic bonding interactions was demonstrated to form the luminescent [Au(CN) 2] - aggregate, wherein negatively charged [Au(CN) 2] - was found to stabilize the β-sheet structure by suppressing repulsion between the positively charged side chains. Poly-L-glutamic acid (P(Glu)) bearing multiple negatively charged side chains was performed to serve as a polymeric spatially aligned scaffold for aggregation of the positively charged platinum(II) complexes [Pt(trpy)C≡CR](OTf) (trpy = 2,2′,6′,2″-terpyridine; R = Ph (PtH), C 6H 4C 12H 25-p (PtC 12)) through electrostatic interaction, resulting in tunable emission properties. The introduction of the cationic luminescent iridium(III) and ruthenium(II) complexes into P(Glu) as a polymeric scaffold, wherein control of the conformational change of P(Glu) was achieved, was also allowed to induce the tuning of the emission properties and energy transfer in aqueous media.

KW - aggregation

KW - emission

KW - gold(I) complex

KW - iridium(III) complex

KW - metallophilic interaction

KW - platinum(II) complex

KW - poly-L-glutamic acid

KW - poly-L-lysine

KW - ruthenium(II) complex

KW - self-association

UR - http://www.scopus.com/inward/record.url?scp=84865355538&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865355538&partnerID=8YFLogxK

U2 - 10.1002/masy.201200003

DO - 10.1002/masy.201200003

M3 - Article

AN - SCOPUS:84865355538

SN - 1022-1360

VL - 317-318

SP - 206

EP - 214

JO - Macromolecular Symposia

JF - Macromolecular Symposia

IS - 1

ER -

Polypeptides-induced self-aggregation and tuning of emission properties of luminescent complexes

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this