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噻吩甲酰三氟丙酮（TTA）是稀土离子络合物研究中较为常用的β-二酮类配体。 Ci Yunxiang等研究发现,氯磺化的TTA（即CTTA）与BSA联结后,BSA-CTTA复合物中CTTA-Eu3+的荧光强度比水解后的CTTA-Eu3+提高了1000～10 000倍,络合物稳定性也明显升高。将2个β-二酮单体整合到同一分子,合成了2种新的配基TRIAZINE-TTA和BCTOT（1,10-双（8’-氯磺基噻吩基）-4,4,5,5,6,6,7,7,-全氟-1,3,8,10-葵四酮）,用BCTOT标记BSA和链亲合素（SA）。BCTOT与Eu3+络合物的荧光寿命约为320μs,最大荧光激发波长约345nm,
The thio-formyl trifluoroacetone (TTA) is the most commonly used β-diketonate ligand in the study of rare earth ion complexes. The study of Ci Yunxiang et al. Found that the fluorescence intensity of CTTA-Eu3 + in BSA-CTTA complex increased by 1000 to 10 000 times than that of CTTA-Eu3 + after the coupling of chlorosulfonated TTA (ie CTTA) with BSA. Stability also significantly increased. Two new ligands, TRIAZINE-TTA and BCTOT (1,10-bis (8’-chlorosulfanylthienyl) -4,4,5, were synthesized by integrating two β-diketones into the same molecule. 5,6,6,7,7-perfluoro-1,3,8,10-pertunone), BSA and streptavidin (SA) were labeled with BCTOT. The fluorescence lifetime of BCTOT and Eu3 + complexes is about 320μs, the maximum fluorescence excitation wavelength is about 345nm,