期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 364, 期 2, 页码 366-372出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.08.074
关键词
Chromism; Polydiacetylene; Sensor array; Statistical analysis; VOC
资金
- National Nanotechnology Center (NANOTEC, NSTDA) [NN-B-22-FN9-10-52-06]
- Thailand Research Fund (TRF)
- Thai government [TKK2555, SP2]
- CHE [AM 1006A]
- Chulalongkorn University
- Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University
A well known unique property of polydiacetylenes (PDAs) is the colorimetric response to external stimuli making it one of the most studied conjugated polymers for sensing applications. Here we report the synthesis of a novel series of diacetylene acids from the condensation of pentacosa-10,12-diynylamine (PCDAmine) and dicarboxylic acid or its anhydrides. One of these diacetylene lipids, 4-(pentacosa-10,12-diynylamino)-4-oxobutanoic acid (PCDAS), is used in combination with pentacosa-10,12-diynoic acid (PCDA) for dropcasting on pieces of filter paper which are consequently irradiated by UV light to generate a paper based sensor array for solvent detection and identification. Upon the exposure to various types of organic solvents, the blue colored sensors colorimetrically respond to give different shades of colors between blue to red. The color patterns of the sensor array are recorded as RedGreenBlue (RGB) values and statistically analyzed by principal component analysis (PCA). The PCA score plot reveals that the array is capable of identifying eleven common organic solvents. (C) 2011 Elsevier Inc. All rights reserved.
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