Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/34330
Title: Applications of Metal Compounds and Cholesteric Liquid Crystals for Chemical Sensing
Authors: LAURA SUTARLIE
Keywords: chemical sensing, detection, colorimetric, metal compounds, cholesteric liquid crystals, volatile organic compounds
Issue Date: 21-Jul-2011
Source: LAURA SUTARLIE (2011-07-21). Applications of Metal Compounds and Cholesteric Liquid Crystals for Chemical Sensing. ScholarBank@NUS Repository.
Abstract: Chemical sensing of volatile organic compounds (VOCs) has attracted much attention. However, challenges such as how to produce low-cost, portable VOC sensors with good sensory performance remain. Motivated by these challenges, we developed VOCs sensors from two potential materials. The first one is metal compounds because they can be used as molecular receptors based on metal-ligand interactions. Firstly, metal phthalocyanines were added as dopants in transparent polymers for portable colorimetric amines sensor. We also studied the surface ligands effect to colorimetric response of Cu2+ to ammonia. The second material exploited here is cholesteric liquid crystals (CLCs). We developed colorimetric CLCs arrays and thin films for VOCs detection. To improve CLCs selectivity, CLCs were doped with suitable molecular receptors. Finally, we utilized CLCs to develop integrated VOCs sensors with microfluidic channels. This work shows the potential utility of metal compounds and CLCs as low-cost and portable sensors for detecting VOCs.
URI: http://scholarbank.nus.edu.sg/handle/10635/34330
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Thesis Laura Sutarlie.pdf2.26 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

249
checked on Dec 11, 2017

Download(s)

628
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.