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金属离子和化学小分子的检测在人类健康、环境污染以及食品安全等领域具有重要意义,科学工作者们已经在设计、发展高灵敏化学传感器方面进行了大量研究。在过去的几十年里,共轭聚合物由于其卓越的光电性质,引起了人们极大的关注,并取得了众多革命性科技进展。最近,利用共轭聚合物的荧光信号放大机制,人们设计、发展了一系列新型的化学和生物传感体系。共轭聚合物的信号传感机制包括电子转移,荧光共振能量转移以及共轭聚合物聚集或构象改变。本文主要介绍我们实验室在利用共轭聚合物实现金属离子和化学小分子荧光检测方面取得的进展,并对未来发展方向与面临的挑战进行了讨论。
The detection of metal ions and chemical small molecules is of great significance in the fields of human health, environmental pollution and food safety. Scientists have done a lot of research in the design and development of highly sensitive chemical sensors. Over the past few decades, conjugated polymers have drawn great attention due to their excellent optoelectronic properties and have achieved a great deal of revolutionary technological progress. Recently, the use of conjugated polymer fluorescence signal amplification mechanism, people have designed and developed a series of new chemical and biological sensing system. The signal transduction mechanisms of conjugated polymers include electron transfer, fluorescence resonance energy transfer, and conjugate polymer aggregation or conformational changes. This article describes the progress made by our laboratories in the use of conjugated polymers for fluorescence detection of metal ions and small chemical molecules, and discusses the future directions and challenges.