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发现４－溴联苯在无保护性介质存在且不需除氧的条件下即有一定强度的流体室温燐光和延迟荧光发射。借助于少量有机溶剂的增溶作用和除氧操作，可以获得完全清澈透明的延迟荧光测量体系，溴联苯的检出限为１．５×１０－６ｍｏｌ／Ｌ。
4-Bromobiphenyl was found to exhibit some intense fluid room temperature calendering and delayed fluorescence emission in the absence of protective media and without deoxygenation. With a small amount of organic solvent solubilization and oxygen scavenging operation, a completely clear and transparent delayed fluorescence measurement system can be obtained. The detection limit of bromobiphenyl is 1.5 × 10-6mol / L.