期刊
ACS APPLIED MATERIALS & INTERFACES
卷 5, 期 3, 页码 565-572出版社
AMER CHEMICAL SOC
DOI: 10.1021/am3018724
关键词
platinum(II) terpyridine complex; photophysics; excited-state absorption; two-photon absorption; reverse saturable absorption; nonlinear absorbing materials
资金
- Army Research Laboratory [W911NF-06-2-0032, W911NF-10-2-0055]
- National Science Foundation [CHE-0449598]
Pt(II) complexes bearing 4-(7-(benzothiazol-2'-yl)-9,9-diethylfluoren-2-yl)-2,2':6',2 ''-terpyridine or 4-(7-(benzothiazol-2'-yl)-9,9-diethylfluoren-2-yl)ethynyl-2,2':6',2 ''-terpyridine ligand exhibit strong reverse saturable absorption in the visible spectral region and large two-photon initiated excited-state absorption in the near-IR region. They are promising broadband nonlinear absorbing materials from the visible to the near-IR region. The extended pi-conjugation in complex 2 that has a C C linker between the terpyridine ligand and the 4-(7-(benzothiazol-2'-yl)-9,9-diethylfluoren-2-yl) substituent significantly increases the two-photon absorption cross sections (sigma(2)), making it among the strongest of two-photon absorbing Pt(II) complexes.
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