Synthesis and characterization of a new chromophor with acid/base-sensitive fluorescence emission

✍ Scribed by Hai Guang Zhang; Xu Tang Tao; Kao Shan Chen; Chun Xue Yuan; Shi Na Yan; Min Hua Jiang

• Publisher: Chinese Electronic Periodical Services
• Year: 2011
• Tongue: English
• Weight: 212 KB
• Volume: 22
• Category: Article
• ISSN: 1001-8417
• DOI: 10.1016/j.cclet.2011.03.013

✦ Synopsis

A new two-photon absorption compound, 2-{4-[(dicyanomethylidene-5,5-dimethylcyclohexl)vinyl]phenyl}imidazo[4,5f][1,10]phenanthroline (DDVPIP), was synthesized and characterized. The one-photon excited fluorescence (OPEF) and twophoton excited fluorescence (TPEF) of DDVPIP are sensitive to the acid/base of the solution, which are enhanced in basic solution but weakened in acidic solution. Charge-transfer (CT) states of DDVPIP were calculated through theory methods to explain its acid/ base-sensitive fluorescent properties.