1991
DOI: 10.1021/cm00017a030
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Cobalt phthalocyanine crystal synthesized at low temperature

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Cited by 30 publications
(20 citation statements)
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“…Evidence for the presence of surface nitrogen (N1s peak, see Fig. 9b) is a single peak centered at 399.0 eV, in agreement with the literature [68][69][70]; there is little separation (e.g., 0.28 eV as a shift in Pb-Pc [71]) between the four equivalent aza-type nitrogens and four equivalent pyrrole-type nitrogens (for both Co-and Cu-Pc). The decrease in surface nitrogen content with HTT is consistent with the disappearance of the C1s peak at 285.7 eV (attributed to carbon-nitrogen bonding, as mentioned above) and is practically undetected at 850°C and above.…”
Section: Effect Of Httsupporting
confidence: 89%
“…Evidence for the presence of surface nitrogen (N1s peak, see Fig. 9b) is a single peak centered at 399.0 eV, in agreement with the literature [68][69][70]; there is little separation (e.g., 0.28 eV as a shift in Pb-Pc [71]) between the four equivalent aza-type nitrogens and four equivalent pyrrole-type nitrogens (for both Co-and Cu-Pc). The decrease in surface nitrogen content with HTT is consistent with the disappearance of the C1s peak at 285.7 eV (attributed to carbon-nitrogen bonding, as mentioned above) and is practically undetected at 850°C and above.…”
Section: Effect Of Httsupporting
confidence: 89%
“…In previous work, attention is devoted to the nanoscopic materials of metals and simple inorganic semiconductors (1)(2)(3)(4)(5)(6)(7)(8)(9)(10), whereas reports on the preparation and properties of nanoscopic organic semiconductors have so far been scarce. A few works about the size effect on the absorption properties and charge generation efficiency of metal-free phthalocyanine particles (average particle size larger than 100 nm) prepared by the traditional milling method have been reported (11,12). It has been concluded that smaller-size pigment particles exhibit higher carrier generation efficiency within the examined particle size region.…”
mentioning
confidence: 99%
“…Out-of-plane CC bending (γ CC ) in the range between 850 and 960 cm ¹1 and out-of-plane CH bending (γ CH ) and CH stretching (ν CH ) at 1370 cm ¹1 were observed. 4 The peaks of β-CoPc had larger number than those of α-CoPc showing dense molecular packing with larger van der Walls' force. A broad peak at around 1700 cm ¹1 attributed to C=O stretching mode (ν C=O ) in CF 3 COOH was not observed in the α-CoPc powder prepared by the neutralization method.…”
mentioning
confidence: 93%
“…It was revealed that the commercial powder had a β-CoPc structure, while the powders treated with KOH and NaOH solutions gave α-phase MPcs. α-Phase CoPc was not obtained from the NH 4 OH solution, although the specific phase of polymorphic structure could not be identified. The results indicate that monomolecular CoPc in liquid preferentially forms α-phase with a dominant effect of ππ interaction, similar to the behavior in vacuum conditions.…”
mentioning
confidence: 97%
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