1675-57-6Relevant articles and documents
σ-Acetylide complexes of ruthenium and osmium containing alkynylsilane ligands
Wong, Wai-Yeung,Wong, Chun-Kin,Lu, Guo-Liang
, p. 27 - 34 (2003)
The use of the ligands, diethynyldiphenylsilane and 1,3-diethynyltetramethyldisiloxane, in the synthesis of Group 8 metal σ-acetylide mononuclear complexes is demonstrated. New complexes trans -[(dppm)2ClMC≡CSi(Ph)2C≡CH] (M = Ru 1; O
A silicon-cored tetraphenyl benzene derivative with aggregation-induced emission enhancement as a fluorescent probe for nitroaromatic compounds detection
Liang, Yan
, p. 395 - 403 (2019/03/27)
Two benzene with multiple contiguous phenyl substituent derivatives, namely, 1, 2, 3, 4-tetraphenyl benzene (TPB) and bis(1,2,3,4-tetraphenylbenzene-yl) diphenylsilane (TPB-Si), were synthesized by the Knoevenagel/Diels–Alder method. TPB and TPB-Si both showed aggregation-induced emission enhancement (AIEE) properties in tetrahydrofuran/water mixtures. The fluorescence-quenching behaviors of the two compounds with different nitroaromatic compounds were also investigated. TPB and TPB-Si both showed low detection limit, high sensitivity, and high quenching efficiency in detecting nitroaromatic compounds. Furthermore, the two compounds in aggregate state exhibited much better detection abilities than in THF solution. And TPB-Si exhibited better detection ability than TPB in both solution and aggregate state. The reason could be attributed to the special tetrahedral molecular structure of TPB-Si, which was demonstrated by theoretical calculations and crystal structures. Moreover, TPB-Si in solid film also exhibited excellent detection performance to nitroaromatic explosive vapor. This work may serve as a basis for designing new organic materials with great efficiency and sensitivity in fluorescence detection.
Fourfold Diels-Alder Reaction of Tetraethynylsilane
Geyer, Florian L.,Rode, Alexander,Bunz, Uwe H. F.
, p. 16448 - 16453 (2016/02/12)
A series of ethynylated silanes, including tetraethynylsilane was treated with tetraphenylcyclopentadienone at 300 8C under microwave irradiation to give the aromatized Diels-Alder adducts as sterically encumbered mini-dendrimers with up to 20 benzene rings. The sterically most congested adducts display red-shifted emission through intramolecular p-p interactions in the excited state.
Emission enhancement and color adjustment of silicon-cored structure in tetraphenyl benzene with aggregation-enhanced emission
Wang, Hua,Liang, Yan,Xie, Huanling,Feng, Linglong,Lu, Haifeng,Feng, Shengyu
supporting information, p. 5601 - 5606 (2014/07/08)
In this paper, we report the synthesis and optical behavior of tetraphenyl benzene and its two derivatives. All the three compounds exhibited aggregation-enhanced emission (AEE) properties at a low concentration. The AEE mechanism was investigated and is due to restricted intramolecular rotation and unique packing structure. Furthermore, this kind of dendritic benzene derivatives exhibited interesting optical properties with increased concentration. Furthermore, we found a new phenomenon that the silicon-cored structure could efficiently enhance emission intensity and adjust the emission colors of dendritic benzene. The phenomenon was called "silicon-cored effect." This effect may give some guidance to the design of new luminescent materials with AIE and AEE properties. This journal is the Partner Organisations 2014.
