3M Company, 3M Center, Building 235-2B-87, St. Paul, Minnesota 55144, USA.
Langmuir. 2010 Mar 16;26(6):3767-70. doi: 10.1021/la903483q.
We describe herein a novel approach for visual indication of trace organic vapors. The sensor utilizes a microporous material within a visual thin film transducer to produce changes in color upon exposure to a very wide range of volatile organic compounds. Visual indication at 5 parts per million (ppm) is demonstrated, with optoelectronic detection achieved to below 50 parts per billion (ppb). Through a thoughtful design of the sensor, we are able to avoid interference from water vapor, a critical attribute needed for practical application.
我们在此介绍了一种新颖的痕量有机蒸气可视指示方法。该传感器利用可视薄膜换能器内的微孔材料，在接触到极宽范围的挥发性有机化合物时会产生颜色变化。该传感器可在 5ppm 下进行可视指示，使用光电检测可达到 50ppb 以下。通过对传感器进行精心设计，我们能够避免水蒸气的干扰，这是实际应用所必需的关键特性。
