کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5434380 1509143 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Colorimetric sensors for rapid detection of various analytes
ترجمه فارسی عنوان
سنسورهای رنگی برای تشخیص سریع آنالیت های مختلف
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی


- Basic introduction about the sensor technology has been discussed.
- Importance of colorimetric sensors for the detection of analytes has been overviewed.
- Discussed in detail about the detection of various analytes like biomolecules and chemical compounds.
- Colorimetric sensor detection based on nanoparticles and interference mechanism has been explained in detail.

Sensor technology for the rapid detection of the analytes with high sensitivity and selectivity has several challenges. Despite the challenges, colorimetric sensors have been widely accepted for its high sensitive and selective response towards various analytes. In this review, colorimetric sensors for the detection of biomolecules like protein, DNA, pathogen and chemical compounds like heavy metal ions, toxic gases and organic compounds have been elaborately discussed. The visible sensing mechanism based on Surface Plasmon Resonance (SPR) using metal nanoparticles like Au, Ag, thin film interference using SiO2 and colorimetric array-based technique have been highlighted. The optical property of metal nanoparticles enables a visual color change during its interaction with the analytes owing to the dispersion and aggregation of nanoparticles. Recently, colorimetric changes using silica substrate for detection of protein and small molecules by thin film interference as a visible sensing mechanism has been developed without the usage of fluorescent or radioisotopes labels. Multilayer of biomaterials were used as a platform where reflection and interference of scattering light occur due to which color change happens leading to rapid sensing. Colorimetric array-based technique for the detection of organic compounds using chemoresponsive dyes has also been focused wherein the interaction of the analytes with the substrate coated with chemoresponsive dyes gives colorimetric change.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 78, 1 September 2017, Pages 1231-1245
نویسندگان
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