Lanthanide luminescent gold nanoparticles: pH-driven self-assembly formation between Eu(III)-cyclen conjugated AuNPs and sensitising β-diketonate antenna in water

被引：43

作者：

Bonnet, Celia S. ^{[1
]}

Massue, Julien ^{[1
]}

Quinn, Susan J. ^{[1
]}

Gunnlaugsson, Thorfinnur ^{[1
]}

机构：

[1] Univ Dublin Trinity Coll, Sch Chem, Ctr Synth & Chem Biol, Dublin D2, Ireland

来源：

ORGANIC & BIOMOLECULAR CHEMISTRY | 2009年 / 7卷 / 15期

关键词：

NEAR-INFRARED LUMINESCENT; TERNARY COMPLEXES; COORDINATION-COMPLEXES; TERBIUM COMPLEXES; EUROPIUM COMPLEX; CYCLEN COMPLEXES; AQUEOUS-SOLUTION; RECOGNITION; ANION; CARBOXYLATES;

D O I：

10.1039/b904183d

中图分类号：

O62 [有机化学];

学科分类号：

070303 [有机化学];

摘要：

The formation of a self-assembly between water soluble gold nanoparticles AuNP-1.Eu, functionalised with a heptadentate macrocyclic Eu(III) cyclen conjugate via an alkyl thiol spacer, and a naphthalene beta-diketone antenna was investigated as a function of pH in water. In the study, the changes in the absorption spectra of the antenna and the gold surface plasmon resonance band, the fluorescence and the delayed Eu( III) emission of the self-assembly were all monitored. We demonstrate that the Eu( III) emission arising from the self-assembly formation on AuNP is significantly modulated as a function of pH, where within the physiological pH range, the emission is 'switched on' and that a direct connection can be made between theses changes and the quenching in the antenna as a function of pH.

引用

页码：3074 / 3078

页数：5

共 72 条

[1]

Europium-Based Fluorescence Nanoparticle Sensor for Rapid and Ultrasensitive Detection of an Anthrax Biomarker [J].

Ai, Kelong ;

Zhang, Baohua ;

Lu, Lehui .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (02) :304-308

[2]

Non-radiative deactivation of the excited states of europium, terbium and ytterbium complexes by proximate energy-matched OH, NH and CH oscillators: an improved luminescence method for establishing solution hydration states [J].

Beeby, A ;

Clarkson, IM ;

Dickins, RS ;

Faulkner, S ;

Parker, D ;

Royle, L ;

de Sousa, AS ;

Williams, JAG ;

Woods, M .

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1999, (03) :493-503

[3]

Semiconductor quantum dots and metal nanoparticles: syntheses, optical properties, and biological applications [J].

Biju, Vasudevanpillai ;

Itoh, Tamitake ;

Anas, Abdulaziz ;

Sujith, Athiyanathil ;

Ishikawa, Mitsuru .

ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2008, 391 (07) :2469-2495

[4]

Sol gel-immobilised terbium complexes for luminescent sensing of dissolved oxygen by analysis of emission decay [J].

Blair, S ;

Kataky, R ;

Parker, D .

NEW JOURNAL OF CHEMISTRY, 2002, 26 (05) :530-535

[5]

Narrow-range optical pH sensors based on luminescent europium and terbium complexes immobilized in a sol gel glass [J].

Blair, S ;

Lowe, MP ;

Mathieu, CE ;

Parker, D ;

Senanayake, PK ;

Kataky, R .

INORGANIC CHEMISTRY, 2001, 40 (23) :5860-5867

[6]

Structural studies in aqueous solution of new binuclear lanthanide luminescent peptide conjugates [J].

Bonnet, Celia S. ;

Devocelle, Marc ;

Gunnlaugsson, Thorfinnur .

CHEMICAL COMMUNICATIONS, 2008, (38) :4552-4554

[7]

Lanthanide macrocyclic quinolyl conjugates as luminescent molecular switches and logic gate functions using HO- and O2 as inputs [J].

Bonnet, Celia S. ;

Gunnlaugsson, Thorfinnur .

NEW JOURNAL OF CHEMISTRY, 2009, 33 (05) :1025-1030

[8]

BONNET CS, 2007, J AM CHEM SOC, V31, P10401

[9]

New opportunities for lanthanide luminescence [J].

Buenzli, Jean-Claude G. ;

Comby, Steve ;

Chauvin, Anne-Sophie ;

Vandevyver, Caroline D. B. .

JOURNAL OF RARE EARTHS, 2007, 25 (03) :257-274

[10]

Benefiting from the unique properties of lanthanide ions [J].

Bünzli, JCG .

ACCOUNTS OF CHEMICAL RESEARCH, 2006, 39 (01) :53-61

← 1 2 3 4 5 6 7 8 →