Synthesis of a Series of Octabutoxy- and Octabutoxybenzophthalocyanines and Photophysical Properties of Two Members of the Series
摘要:
We have developed a new route to silicon-centered phthalocyanines and phthalocyanine-like compounds that is robust and flexible, and of considerable potential usefulness. This route entails insertion of silicon into the metal-free macrocycle. It has been developed in the course of preparing four new and two known metal-free, six new dihydroxysilicon, and six new bis-trihexylsiloxysilicon octabutoxy- and octabutoxybenzophthalocyanines. One of the siloxysilicon compounds, that with the ligand 5,9,12,16,19,23,28,32-octabutoxy-33H,35H-dibenzo[b,g]dinaphtho[2,3-l:2',3'-q]porphyrazine, has a Q-band at a wavelength of 804 nm and an extinction coefficient of 1.9 x 10(5) M-1 cm(-1). Its wavelength thus matches the wavelength of the output of the most common GaAlAs diode laser. The compound and its analog in which the benzo rings are trans to each other instead of cis have no tendency to aggregate in benzene up to a concentration of 150 mu M. The triplet state of the cis isomer has an absorption maximum at 640 nm and a Lifetime in deaerated benzene solution of 105 mu s, while the triplet state of the trans isomer has a maximum at 660 nm and a lifetime of 72 mu s. Both isomers have a triplet quantum yield, Q(t), of ca. 0.20 and a singlet oxygen quantum yield, Q(Delta), of ca. 0.20, photochemical properties that are consistent with potentially efficient photosensitization action in photodynamic therapy of tumors. For both sensitizers, energy transfer from the sensitizer triplet to ground state of dioxygen is reversible at appropriate concentrations. For the cis isomer, the equilibrium constant for the energy transfer process, K-e, is 0.012 +/- 0.001, and the triplet state energy calculated from this, E-T, is 21.29 kcal/mol (E-T derived from phosphorescence measurements is 21.26 kcal/mol). For the trans isomer, K-e, is 3.68 x 10(-3) and E-T is 19.27 kcal/mol.
Nickel catalyzed decyanation of aryl and aliphatic cyanides with hydrosilane as the hydride source has been developed. This method is easy to handle, scalable and can be carried out without a glove box. The method has been applied in the cyanide directed functionalization reaction and α-substitution of benzyl cyanide.
A process is described for preparing alkoxy-octasubstituted metal-free or metal-containing naphthalocyanines by etherification of 1,4-dihydroxy-2,3-dicyanonaphthalene and formation of the metal-free naphthalocyanine with or without subsequent metallization.
METHOD OF PROVING AUTHENTICITY, SIGNAL CONVERSION METHOD, POLYMER WELDING METHOD, METHOD OF PRODUCING LITHOGRAPHIC PRINTING PLATE, INK FOR PRINTING, TONER, AND HEAT RAY-SHIELDING MATERIAL, EACH USING NAPHTHALOCYANINE COMPOUND, AND METHOD OF PRODUCING NAPHTHALOCYANINE COMPOUND
申请人:Kimura Keizo
公开号:US20110311911A1
公开(公告)日:2011-12-22
Disclosed is a method of proving the authenticity of goods or a support comprising using a compound represented by Formula (I).
wherein, in Formula (I), each of R
11
to R
46
independently represents a hydrogen atom or a substituent group, wherein when a benzene ring is substituted with any of R
11
to R
46
, any groups adjacent to each other among R
11
to R
46
may be bonded each other to form a ring; M represents a hydrogen atom, a metal ion, or a group containing a metal ion; and n represents 1 or 2. The infrared absorption efficiency is high and the deterioration in infrared absorption over time is ameliorated. The infrared absorption efficiency is high and the deterioration in infrared absorption over time is ameliorated.
A photoelectric conversion film contains a compound represented by the following formula:
where M represents Si or Sn, X represents O or S, and R
1
to R
14
each independently represent an alkyl group.