【作者】 周子超； 车延科； 赵进才；

【Author】 Zichao Zhou;Yanke Che;Jincai Zhao;Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences;

【机构】 中国科学院化学研究所光化学重点实验室；

【摘要】 本工作中,我们构建了一种新型的层级结构的纳米线集束材料,通过挥发性有机化合物诱导集束内纳米线间距离的调控,转化为荧光信号响应,从而实现了对惰性挥发性有机化合物的高灵敏度检测。我们证明了通过挥发性有机化合物分子与纳米线之间的作用,可以有效调节集束内纳米线之间的距离。进一步优化材料结构,减小纳米线集束的尺寸,使纳米线间距离更易于调节,实现了荧光响应灵敏度的提高。本工作提出了利用外界刺激调控纳米线间距离,从而转化为荧光响应的原理,未来可用于构建检测有毒有害化学气体的新型荧光传感器。更多还原

【Abstract】 In this work, we report the fabrication of hierarchical nanofiber bundles from a perylene monoimide molecule that enable the sensitive detection of various inert VOCs. We demonstrate that the inter-nanofiber spacing of the bundles with appropriate packing interactions can be effectively adjusted by various VOCs, which is in turn translated into the dynamic fluorescence responses. Upon further decreasing the size of the nanofiber bundles, of which the inter-nanofiber spacing is more favorable to be adjusted, enhanced fluorescence responses to various VOC vapors can be achieved. Our work presents a new protocol, i.e., translating the stimuli-responsive inter-nanofiber spacing into fluorescence responses, to construct novel fluorescence sensors for various hazardous chemical vapors.更多还原