TY - JOUR
T1 - Synthesis and Characterization of Two-Photon Active Chromophores Based on Tetrathienoacene (TTA) and Dithienothiophene (DTT)
AU - Kumaresan, Prabakaran
AU - Liu, Yi You
AU - Vegiraju, Sureshraju
AU - Ezhumalai, Yamuna
AU - Yu, Hsien Cheng
AU - Yau, Shueh Lin
AU - Chen, Ming Chou
AU - Lin, Tzu Chau
N1 - Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - Three new donor-π-donor (D-π-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 2500 GM) 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 1950 GM, which is nearly 7 times larger than that of previously reported DTT-based chromophores.
AB - Three new donor-π-donor (D-π-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 2500 GM) 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 1950 GM, which is nearly 7 times larger than that of previously reported DTT-based chromophores.
KW - chromophores
KW - conjugation
KW - heterocycles
KW - nonlinear optics
KW - structure-activity relationships
UR - http://www.scopus.com/inward/record.url?scp=84938206691&partnerID=8YFLogxK
U2 - 10.1002/asia.201500276
DO - 10.1002/asia.201500276
M3 - 期刊論文
AN - SCOPUS:84938206691
SN - 1861-4728
VL - 10
SP - 1640
EP - 1646
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
IS - 8
ER -