Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.
J Phys Chem B. 2023 Feb 2;127(4):828-837. doi: 10.1021/acs.jpcb.2c07815. Epub 2023 Jan 24.
Film-based fluorescent sensors (FFSs) represent an important chemistry technology for meeting the urgent needs of on-site and real-time analysis, thereby enabling significant applications in environmental and health monitoring. As the core of FFSs, innovative design of sensing fluorophores and their intrinsic excited-state-related response nature endow FFSs with superior sensing performances in an endless expansion. In this Perspective, we specifically focus on perylene bisimide (PBI)-containing polyads and multichromophores with rigid configuration and notable photochemical stability for developing high-performance FFSs. These nonplanar structures mitigate aggregation and create abundant gaps for the sake of mass transfer and availability of the sensing units in the adlayer of the sensing films. We also comprehensively discuss how to adjust electronic coupling governing the excited-state events by appropriate functionalization strategies, thus providing a plethora of valuable insights for the exploration of the structure-property relationships in these orchestrated molecular systems. Throughout this Perspective, we also identify opportunities for FFSs in the future developments.
基于薄膜的荧光传感器 (FFS) 代表了一种重要的化学技术，可满足现场和实时分析的迫切需求，从而在环境和健康监测方面有重要的应用。作为 FFS 的核心，传感荧光团的创新性设计及其固有激发态相关响应特性赋予 FFS 在不断扩展中具有卓越的传感性能。在本观点中，我们特别关注含有聚并苯二酰亚胺 (PBI) 的多联体和具有刚性结构和显著光化学稳定性的多色团，以开发高性能的 FFS。这些非平面结构可减少聚集并为传质和传感单元在传感膜的吸附层中的可用性创造丰富的间隙。我们还全面讨论了如何通过适当的功能化策略来调整电子耦合，从而控制激发态事件，从而为探索这些协同分子体系中的结构-性能关系提供了大量有价值的见解。在本观点中，我们还确定了 FFS 在未来发展中的机遇。
