Herein a mechanoresponsive luminophore containing a pyridine ring at the molecular terminal is synthesized. The chromophore powder exhibits blue photoemission in the initial state, but turns green upon mechanical grinding. The chromophore forms a ...
Hiroyuki Ishikawa   Jun-ichi Nishida   John W. Jones   Lawrence T. Scott   Takeshi Kawase   
CHEMPLUSCHEM 82(7) 1073-1077 2017年7月 [査読有り][招待有り]
The title carbene (4) was generated as a highly reactive species in solution by photoirradiation of 10-diazobicyclo[6.3.0] undecapentaene (5) using a high-pressure mercury lamp. Carbene 4 reacts with benzene to afford two isomeric adducts, 10-phen...
A new tetrabenzofluorene fluorophore, containing 2,2-dicyanoethenylphenyl groups, was synthesized and subjected to photophysical studies. This substance was found to exhibit a relatively intense fluorescence in various organic solvents associated ...
Canadian Journal of Chemistry 95(4) 371-380 2017年4月 [査読有り][招待有り]
Diels–Alder reactions of acenaphthylene-5,6-dicarboximide (AI) derivatives with the corresponding dienes afforded some derivatives of π-extended fluoranthene imide, namely N-(2-ethylhexyl)-7,10-diphenylfluoranthene imide (DPFI) and N-(2-ethylhexyl...
The substituent effect on optical properties of 3,14-diphenyl-17,17-di(n-pentyl)tetrabenzofluorene derivatives bearing electron-withdrawing groups(NC, CH3OCO, CH3SO2, and OHC) at 4-position of the phenyl groups were investigated. These compounds w...
Strained phenylacetylene macrocycles, cyclic [3]- and [4]metaphenylacetylenes ([n]CMPAs) and methoxy derivatives, and cyclic [5]- to [9]paraphenylacetylenes ([n]CPPAs) were prepared using a strategy based on the McMurry coupling reaction. The phys...
JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN 65(9) 888-896 2007年9月
The pi-pi interaction between curved conjugated systems is important for the formation and properties of new carbon materials such as carbon nanotubes, bucky onions and fullerene peapods. However, the nature has been little understood so far. Rece...
H Kurata   Y Takehara   K Matsumoto   T Kawase   M Oda   
CHEMISTRY LETTERS 34(12) 1660-1661 2005年12月
The extended-qui none derivative of cyclopent[fg]acenaphthylene-1,2-dione (pyracyloquinone) is first synthesized and characterized. An X-ray analysis exhibits the non-planar structure involving bent of two 3,5-di-tert-butyl-4-oxo-cyclohexadienylid...
H Kurata   Y Takehara   K Matsumoto   T Kawase   M Oda   
CHEMISTRY LETTERS 34(12) 1660-1661 2005年12月
The extended-qui none derivative of cyclopent[fg]acenaphthylene-1,2-dione (pyracyloquinone) is first synthesized and characterized. An X-ray analysis exhibits the non-planar structure involving bent of two 3,5-di-tert-butyl-4-oxo-cyclohexadienylid...