177991-00-3Relevant articles and documents
Tetrahedral rigid core antenna chromophores bearing bay-substituted perylenediimides
Myahkostupov, Mykhaylo,Castellano, Felix N.
, p. 9519 - 9527 (2015)
Two new representative methane- and adamantane-centered 'antenna' tetramers bearing bay-substituted π-conjugated phenylethynyl-perylenediimides (PDICCPh) as chromophoric subunits, tetrakis-[1-(4-ethynylphenyl)-N,N′-bis(1-hexylheptyl)-perylene-3,4:9,10-tetracarboxylic diimide]-methane (1) and tetrakis-1,3,5,7-[1-(4-ethynylphenyl)-N,N′-bis(1-hexylheptyl)-perylene-3,4:9,10-tetracarboxylic diimide]-adamantane (2), have been synthesized and their structural aspects have been thoroughly investigated by NMR spectroscopy. These PDI tetramers (1 and 2) represent the first successful example of incorporating the bay-substituted phenylethynyl-perylenediimides into the large rigid core tetrahedral frameworks. In these PDI tetramers, dynamic NMR experiments revealed the existence of perylene-centered conformational dynamic equilibrium (ΔG≠=15-17 kcal/mol), the primary cause of the observed spectral broadening in conventional 1H NMR spectra (295 K). In addition, PDI tetramers 1 and 2 were found to possess exceptional (photo)chemical stability, and their corresponding photophysical properties (εmax～180,000; τFL=6.9 ns; ΦFL～60%) make them viable candidates for various photonic applications and are in good agreement with other related multichromophoric PDI-based systems.
Synthesis and optical properties of σ-π Conjugated organic-inorganic hybrid gels
Naga, Naofumi,Nagino, Hitomi,Iwashita, Midori,Miyanaga, Tomoharu,Furukawa, Hidemitsu
, p. 1360 - 1368 (2015)
Organic-inorganic hybrid gels containing Si-vinylene units have been synthesized by a hydrosilylation reaction of tri- or tetra-ethynyl aryl compounds, 1,3,5-triethynylbenzene (TEB), 3,3,5,5-tetraethynylbiphenyl (TEBP), or tetrakis(4-ethynylphenyl)methane
Synthesis of TEMPO radical decorated hollow porous aromatic frameworks for selective oxidation of alcohols
Shen, Yan-Ming,Xue, Yun,Yan, Mi,Mao, Hui-Ling,Cheng, Hu,Chen, Zhuo,Sui, Zhi-Wei,Zhu, Shao-Bin,Yu, Xiu-Jun,Zhuang, Jin-Liang
, p. 907 - 910 (2021/02/06)
A bottom-up approach was developed to prepare TEMPO radical decorated hollow aromatic frameworks (HPAF-TEMPO) by using TEMPO radical functionalized monomers and SiO2nanospheres as templates. The accessible inner layer, high density of TEMPO sites, and hybrid micro-/mesopores of the HPAF-TEMPO enable the aerobic oxidation of a broad range of alcohols with high efficiency and excellent selectivity.
Diamondoid architectures from halogen-bonded halides
Gunawardana,Dakovi?,Aaker?y
, p. 607 - 610 (2018/02/06)
The reactions between a tetrahedrally-shaped tecton, tetrakis(4-(iodoethynyl)phenyl)methane, and tetraphenylphosphonium halides readily afford interpenetrated and densely packed diamondoid architectures sustained by C-I?X- (X- = chloride, bromide, iodide) interactions. In all these halogen-bonded networks, the halide anions act as four-connecting nodes, while the tetraphenylphosphonium cations provide essential templating information and structural support.
Tetrahedral Tetrakis(p-ethynylphenyl) Group IV Compounds in Microporous Polymers: Effect of Tetrel on Porosity
Uptmoor, Andrea C.,Geyer, Florian L.,Rominger, Frank,Freudenberg, Jan,Bunz, Uwe H. F.
, p. 448 - 454 (2018/06/04)
Three Sonogashira–Hagihara polymerization protocols were applied for the synthesis of conjugated microporous polymers (CMPs) by using group IV tetra(p-ethynylphenyl) monomers with 1,4-diiodobenzene or 1,4-dibromobenzene. The optical properties and surface areas of the CMPs were compared and related to the preparation conditions and the geometry of the tetrahedral building block as obtained after X-ray analysis. In each series, surface areas decreased—independently from the chosen parameters of catalyst, base, and solvent—from carbon-centered CMPs (1595 m2 g?1) to silicon-, germanium-, and tin-centered (649 m2 g?1) networks.
