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Volume: 24 | Article ID: art00013_1
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The role of cations in thermal stability of azo-Fe complexes used as charge-control agents from the standpoint of the crystal structure
Yohei Sato
Kazuya Uta
Jin Mizuguchi
  DOI :  10.2352/ISSN.2169-4451.2008.24.1.art00013_1  Published Online :  January 2008
Abstract

Azo-Fe complexes and their sodium salts are well-known charge-control agents (CCAs) used widely in electrophotography. Aside from the CCA performance, a high thermal stability is also required because pulverized toners are prepared by kneading CCA with various toner components at about 130-180 °C. Therefore, thermal stability has been investigated in azo-Fe complexes from the standpoint of the crystal structure. X-ray analysis revealed that the ammonium cations bridge neighboring azo-Fe complex anions through intermolecular NH…O hydrogen bonds. On the other hand, the Na cations are also found to connect different azo-Fe complex anions through the formation of Na complexes. These facts lead us to conclude that the high thermal stability of azo-Fe complexes is attributed to the intermolecular bonds formed by ammonium or sodium cations.

Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/ISSN.2169-4451.2008.24.1.art00013_1
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Yohei Sato, Kazuya Uta, Jin Mizuguchi, "The role of cations in thermal stability of azo-Fe complexes used as charge-control agents from the standpoint of the crystal structure"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP24),  2008,  pp 50 - 53,  https://doi.org/10.2352/ISSN.2169-4451.2008.24.1.art00013_1

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Copyright © Society for Imaging Science and Technology 2008
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NIP & Digital Fabrication Conference
nip digi fabric conf
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Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2169-4451(20080101)2008:1L.50;1-
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Articles
The role of cations in thermal stability of azo-Fe complexes used as charge-control agents from the standpoint of the crystal structure
SatoYohei
UtaKazuya
MizuguchiJin
01012008
2008
1
50
53
2008
Azo-Fe complexes and their sodium salts are well-known charge-control agents (CCAs) used widely in electrophotography. Aside from the CCA performance, a high thermal stability is also required because pulverized toners are prepared by kneading CCA with various toner components at about 130-180 °C. Therefore, thermal stability has been investigated in azo-Fe complexes from the standpoint of the crystal structure. X-ray analysis revealed that the ammonium cations bridge neighboring azo-Fe complex anions through intermolecular NH…O hydrogen bonds. On the other hand, the Na cations are also found to connect different azo-Fe complex anions through the formation of Na complexes. These facts lead us to conclude that the high thermal stability of azo-Fe complexes is attributed to the intermolecular bonds formed by ammonium or sodium cations.