Copper phthalocyanine-chitin, an adsorbent for carcinogen–nucleotide adducts

1999 ◽  
Author(s):  
Hikoya Hayatsu ◽  
Sanae Mimaki ◽  
Nao Ishizaki ◽  
Keiji Wakabayashi ◽  
Chitose Sugiyama
Keyword(s):  
Copper Phthalocyanine

High-Resolution Cryo-Electron Microscopy of Biological Macromolecules

1990 ◽  
Vol 48 (1) ◽  
pp. 126-127
Author(s):  
Yoshinori Fujiyoshi
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Diffraction Pattern ◽  
Superfluid Helium ◽  
Copper Phthalocyanine ◽  
Optical Diffraction ◽  
Irradiation Damage ◽  
Biological Macromolecules ◽  
Cross Sectional ◽  
Instrumental Resolution

The resolution of direct images of biological macromolecules is normally restricted to far less than 0.3 nm. This is not due instrumental resolution, but irradiation damage. The damage to biological macromolecules may expect to be reduced when they are cooled to a very low temperature. We started to develop a new cryo-stage for a high resolution electron microscopy in 1983, and successfully constructed a superfluid helium stage for a 400 kV microscope by 1986, whereby chlorinated copper-phthalocyanine could be photographed to a resolution of 0.26 nm at a stage temperature of 1.5 K. We are continuing to develop the cryo-microscope and have developed a cryo-microscope equipped with a superfluid helium stage and new cryo-transfer device.The New cryo-microscope achieves not only improved resolution but also increased operational ease. The construction of the new super-fluid helium stage is shown in Fig. 1, where the cross sectional structure is shown parallel to an electron beam path. The capacities of LN2 tank, LHe tank and the pot are 1400 ml, 1200 ml and 3 ml, respectively. Their surfaces are placed with gold to minimize thermal radiation. Consumption rates of liquid nitrogen and liquid helium are 170 ml/hour and 140 ml/hour, respectively. The working time of this stage is more than 7 hours starting from full LN2 and LHe tanks. Instrumental resolution of our cryo-stage cooled to 4.2 K was confirmed to be 0.20 nm by an optical diffraction pattern from the image of a chlorinated copper-phthalocyanine crystal. The image and the optical diffraction pattern are shown in Fig. 2 a, b, respectively.

Determining the exciton diffusion length of copper phthalocyanine in operating planar-heterojunction organic solar cells

2020 ◽  
Vol 89 (3) ◽  
pp. 30201 ◽  
Author(s):  
Xi Guan ◽  
Shiyu Wang ◽  
Wenxing Liu ◽  
Dashan Qin ◽  
Dayan Ban
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Diffusion Length ◽  
Copper Phthalocyanine ◽  
Short Circuit ◽  
Thick Layer ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length

Organic solar cells based on planar copper phthalocyanine (CuPc)/C60 heterojunction have been characterized, in which a 2 nm-thick layer of bathocuproine (BCP) is inserted into the CuPc layer. The thin layer of BCP allows hole current to tunnel it through but blocks the exciton diffusion, thereby altering the steady-state exciton profile in the CuPc zone (zone 1) sandwiched between BCP and C60. The short-circuit current density (JSC) of device is limited by the hole-exciton scattering effect at the BCP/CuPc (zone 1) interface. Based on the variation of JSC with the width of zone 1, the exciton diffusion length of CuPc is deduced to be 12.5–15 nm. The current research provides an easy and helpful method to determine the exciton diffusion lengths of organic electron donors.

Ultra-sensitive boscalid sensors based on β-cyclodextrin modified perfluorinated copper phthalocyanine field-effect transistor

2021 ◽  
Author(s):  
Yunpeng Zhang ◽  
Junhua Kuang ◽  
Jicheng Dong ◽  
Longxian Shi ◽  
Qingyuan Li ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Copper Phthalocyanine ◽  
Sensitive Detection ◽  
Effect Transistor

The increased use of pesticides has raised concerns about the risks of exposure to pesticides. Rapid, simple and sensitive detection of pesticides is still a challenge in the current analytical...

Noncoplanar organic field-effect transistor based on copper phthalocyanine

2006 ◽  
Vol 88 (12) ◽  
pp. 121907 ◽  
Author(s):  
Chong-an Di ◽  
Gui Yu ◽  
Yunqi Liu ◽  
Xinjun Xu ◽  
Yabin Song ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Copper Phthalocyanine ◽  
Organic Field Effect Transistor ◽  
Effect Transistor

Highly Conductive Copper Phthalocyanine-Carbon Plack Mixtures

1985 ◽  
Vol 118 (1) ◽  
pp. 371-376 ◽  
Author(s):  
Marek Kulesza ◽  
Maria Zabkowska ◽  
Witold Waciawek
Keyword(s):  
Copper Phthalocyanine
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