Synthesis and Characterization of Two-Photon Active Chromophores Based on Tetrathienoacene (TTA) and Dithienothiophene (DTT)

被引：14
|
作者：
Kumaresan, Prabakaran [1 ,2 ]
Liu, Yi-You [3 ]
Vegiraju, Sureshraju [1 ]
Ezhumalai, Yamuna [1 ]
Yu, Hsien-Cheng [1 ]
Yau, Shueh Lin [4 ]
Chen, Ming-Chou [1 ]
Lin, Tzu-Chau [3 ]
机构：
[1] Natl Cent Univ, Dept Chem, Jhongli 32001, Taiwan
[2] PSG Coll Arts & Sci, Dept Chem, Coimbatore 641014, Tamil Nadu, India
[3] Natl Cent Univ, Dept Chem, Photon Mat Res Lab, Jhongli 32001, Taiwan
[4] Natl Cent Univ, Dept Chem, Electrochem Lab, Jhongli 32001, Taiwan
来源：
CHEMISTRY-AN ASIAN JOURNAL | 2015年 / 10卷 / 08期
关键词：
chromophores; conjugation; heterocycles; nonlinear optics; structure-activity relationships; POWER-LIMITING PROPERTIES; 3RD-ORDER OPTICAL NONLINEARITIES; SMALL DENDRITIC CHROMOPHORES; EXCITED-STATE ABSORPTION; HIGH-PERFORMANCE; PHOTOPHYSICAL PROPERTIES; CHARGE-TRANSFER; 2-PHOTON-ABSORBING CHROMOPHORES; TRANSISTOR PERFORMANCE; ABSORBING CHROMOPHORES;
D O I：
10.1002/asia.201500276
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three new donor--donor (D--D) tetrathienoacene (thieno[2,3:4,5]thieno[3,2-b]thieno[2,3-d]thiophene (TTA))-cored chromophores, end-functionalized with electron-donating triphenylamine (TPA) groups, were developed and characterized for their two-photon-related properties by using both nano- and femtosecond laser pulses as the probing tools. TTA-based chromophores exhibit stronger and more widely dispersed two-photon absorption (2PA) than those of dithienothiophene (DTT)-based congeners. As a consequence, the bithiophene-conjugated TTA chromophore exhibits the highest maximum 2PA cross-section value (up to 2500GM) with good thermal stability, and thus, it is the best performing two-photon chromophore among the studied model compounds. The bithiophene-conjugated DTT analogue exhibits the second highest maximum two-photon absorptivity of 1950GM, which is nearly 7 times larger than that of previously reported DTT-based chromophores.
引用
收藏
页码：1640 / 1646
页数：7
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