制备了一种咔唑类荧光探针与二氧化硅气凝胶复合的固体荧光材料,用于检测甲醛。设计并合成了一种新型荧光探针,有效地将探针分子接枝在二氧化硅凝胶上,制备了平均孔径为16nm,比表面积达到535m2/g,负载有荧光探针的二氧化硅气凝胶。该复合材料不仅可以避免探针分子因为聚集而导致的荧光猝灭,而且对于甲醛的识别有较高的灵敏度,可检测到甲醛浓度最低为10-5mol/L。
A solid fluorescent material composited with carbazole-based fluorescent probe and silica aerogel was prepared for the detection of formaldehyde.A new type of fluorescent probe was designed and synthesized.By effectively grafting the probe molecules on the silica gel,a silica aerogel loaded with fluorescent probes with high porosity and high specific surface area was prepared.The composite material not only can avoid the fluorescence quenching caused by the aggregation of the probe molecules,but also had a high sensitivity for the recognition of formaldehyde,and can detect a minimum formaldehyde concentration of 10-5mol/L.
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