Complexation between Pentiptycene Derived Bis(crown ether)s and CBPQT<sup>4+</sup> Salt: Ion-Controlled Switchable Processes and Changeable Role of the CBPQT<sup>4+</sup> in Host−Guest Systems
mono(crownether)s. For the pentiptycene derived bis(crownether) with two 24-crown-8 moieties in the trans position, it formed a 1:2 stable complex with the CBPQT4+ salt in solution and in the solid state, in which the pentiptycene moiety played an important role in stabilizing the complex. Moreover, binding and release of the CBPQT4+ ring in the complexes based on the pentiptycene-derived crown ethers
Triptycene-Based Organic Molecules of Intrinsic Microporosity
作者:Rupert G. D. Taylor、Mariolino Carta、C. Grazia Bezzu、Jonathan Walker、Kadhum J. Msayib、Benson M. Kariuki、Neil B. McKeown
DOI:10.1021/ol500591q
日期:2014.4.4
Four Organic Molecules of Intrinsic Microporosity (OMIMs) were prepared by fusing triptycene-based components to a biphenyl core. Due to their rigid molecular structures that cannot pack space efficiently, these OMIMs form amorphous materials with significant microporosity as demonstrated by apparent BET surface areas in the range of 515-702 m(2) g(-1). Bulky cyclic 1',2',3',4'-tetrahydro-1',1',4',4'-tetramethylbenzo units placed on the triptycene termini are especially efficient at enhancing microporosity.
Synthesis, photophysical and photochemical properties of novel phthalocyanines substituted with triptycene moieties
作者:Bader S. Ghanem、Mehmet Pişkin、Mahmut Durmuş、Mohamed E. El-Khouly、Shaya Y. Al-Raqa
DOI:10.1016/j.poly.2015.01.037
日期:2015.4
New metal-free and zinc(II) phthalocyanines containing four triptycene moieties were synthesized and characterized by H-1 NMR, mass, IR, electronic spectroscopies and elemental analysis as well. The steady-state absorption spectra of the investigated compounds exhibited the main absorption bands in the visible region, at around 700 nm. The fluorescence spectra and quantum yields were recorded by steady-state emission measurements. The powerful nanosecond laser flash photolysis technique was employed to record the transient absorption spectra of the long-lived triplet states of the investigated compounds. The singlet oxygen generation and photodegradation properties of the target phthalocyanines under light irradiation were also investigated in tetrahydrofuran solution. (C) 2015 Elsevier Ltd. All rights reserved.