发明授权
US06329082B1 Hetero-spiro compounds and their use as electroluminescence materials
失效
杂环化合物及其作为电致发光材料的用途
- 专利标题： Hetero-spiro compounds and their use as electroluminescence materials
- 专利标题（中）： 杂环化合物及其作为电致发光材料的用途
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申请号： US08836956申请日： 1997-05-22
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公开(公告)号： US06329082B1公开(公告)日： 2001-12-11
- 发明人: Willi Kreuder , Donald Lupo , Josef Salbeck , Hermann Schenk , Thomas Stehlin
- 申请人： Willi Kreuder , Donald Lupo , Josef Salbeck , Hermann Schenk , Thomas Stehlin
- 优先权： DE4442050 19941125
- 主分类号： H05B3314
- IPC分类号： H05B3314
摘要：
Hetero-spiro compounds of the formula (I), where &PSgr; is an element of the 4th main group of the Periodic Table with the exception of carbon, preferably Sn, Ge or Si, particularly preferably Ge or Si, and K1 and K2 are, independently of one another, conjugated systems, for use in electroluminescence devices. The compounds of the formula (I) have a good solubility in customary organic solvents, improved film-forming properties and a significantly reduced tendency to crystallize.