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Indexed by:期刊论文

Date of Publication:2010-06-15

Journal:BIOSENSORS & BIOELECTRONICS

Included Journals:SCIE、EI、PubMed

Volume:25

Issue:10

Page Number:2375-2378

ISSN No.:0956-5663

Key Words:Colorimetric luminescence sensor; Europium; Horseradish peroxidase; Indole-3-acetic acid; Plant auxin; Quantum dots

Abstract:A novel colorimetric luminescence sensorstrip for the detection of indole-3-acetic acid (IAA) has been fabricated by using green emissive quantum dots of cadmium telluride (CdTe QDs) as a background layer and a red emissive europium chelate, [4'-(9-anthryl)-2,2':6',2 ''-terpyridine-6,6 ''-diyl]bis(methylenenitrilo) tetrakis(acetate)-Eu(3+) (ATTA-Eu(3+)), as a specific sensing layer coated on the surface of glass slide, respectively. The luminescence response of the sensor strip is given by the dramatic changes in emission colors from green to red at different IAA concentrations. This approach provides a simple, rapid, sensitive and accurate method for the detection of IAA without using any special scientific instruments. (C) 2010 Elsevier By. All rights reserved.