New class of two-photon-absorbing chromophores based on dithienothiophene
New class of two-photon-absorbing chromophores based on dithienothiophene
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DOI：
10.1021/cm990662r
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发表时间：
2000-02-01
影响因子：
8.6
通讯作者：
Prasad, PN
中科院分区：
文献类型：
--
作者：
Kim, OK;Lee, KS;Prasad, PN
合成了一种新型的双光子吸收(TPA)发色团，它们以二硫代硫杂环(DTT)为pi中心，两端通过pi-共轭连接电子给体(D)或电子受体(A)。它们的TPA截面，使用纳秒和飞秒脉冲激光测量，显示出迄今已知的最大值之一。这主要是由于数码地面电视独特的电子性质所致。
Novel two-photon absorption (TPA) chromophores are synthesized; they have dithienothiophene (DTT) as a pi-center which is attached by electron donor (D) or electron acceptor (A) at each end through a pi-conjugation. Their TPA cross section, measured using nanosecond- as well as femtosecond-pulsed laser, exhibits one of the largest values known so far. This is attributable mainly to the unique electronic properties of DTT.