合成螢磷光譜級的2，2,雙羧酯連苯系列化合物1，2，3並探討構形對光物理性質的影響。
化合物1，2，3在有機凝相中的吸收光譜顯示，三者吸收峰皆在275nm左右，吸收系數約在103~104之範圍，吸收光譜溶劑效應不明顯，發射光譜則具紅位移性質，最低激發單態能階S1應為（π,π*）。三者S1能階順序為化合物1>2>3；以連苯為標準，化合物1，2，3的螢光量子產率分別為0.0085, 0.074,0.25；於室溫中均無法觀測到磷光，僅化合物1在77k下EPA glass中可測得生命期2.1秒的磷光。
以連苯及化合物1，2，3分別對二苯甲酮的磷光作穩態及瞬間的粹熄研究比較，連苯及化合物1，2，3粹熄速率常數分別為2.8x10.7,1.1x106,4.2x106及1.1x108M-1s-1，粹熄效率的大小依序為化合物3>連苯>2>1。化合物1，2，3皆未能粹熄二苯基乙二酮的磷光，估計三者之參態能階應介於68.6kcal/mol至53.7kcal/mol之間。
化合物3可經由二苯甲酮的光敏化而產生延遲螢光的現象，而藉由時間分離光譜，可成功的將此延遲螢光與二苯甲酮的磷光加以分離；但化合物1，2則可能由於螢光量子產率太小，並無類似現象。

2, 2' -biscarboxylate biphenyls 1, 2, 3 were synthesized and studied in the condensed phase medium for their photophysical properties.
The absorption spectra of compounds 1, 2, 3 in solution all show a band peaking at about 275nm with absorption coefficient 103~104. The red shift of emission bands in polar solvent reveals that the lowest excited state of compounds 1, 2, 3 is (π,π*). The fluorescenceq uantum yieids of compounds 1, 2, 3 in cyclohexane, with referring to biphenyl, are 0.0085, 0.074, and 0.25, respectively.
Quenching of triplet bemzophenone and benzil by biphenyl and compounds 1, 2, 3 was investigated by means of steady state luminescence and also transient emission n deaerated benzene solution at room temperature. In the case of quenching phosphore-scence of benzophenone, the observed quenhing rate constants (kq) increase in the order 1<2<bipheny1<3, whereas no quenching was found in the case of benzil. The triplet energies of compounds 1, 2, 3 was estimated between 68.6 kcal/mol and 53.7 kcal.mol.
The p-type delayed fluorescence of compound 3, which was sensitized by triplet benzophenone, was isolated from the phosphorescence of benzophenone by boxcar time-resolved spectroscopy. No counterpart could be obtained for compound 1, 2. It could be due to the low flourescence quantum yield of these two compounds.