TY - JOUR
T1 - Two- and three-photon absorption properties of fan-shaped dendrons derived from 2,3,8-trifunctionalized indenoquinoxaline units
T2 - Synthesis and characterization
AU - Lin, Tzu Chau
AU - Chien, Wei
AU - Mazur, Leszek Mateusz
AU - Liu, Yi You
AU - Jakubowski, Konrad
AU - Matczyszyn, Katarzyna
AU - Samoc, Marek
AU - Amini, Rekfa Wika
N1 - Publisher Copyright:
© 2017 The Royal Society of Chemistry.
PY - 2017
Y1 - 2017
N2 - A model compound set that contains a series of fan-shaped chromophores using 2,3,8-trifunctionalized indenoquinoxaline units as the major building block of their π-framework was synthesized and characterized for their two- and three-photon absorption properties in the femtosecond regime based on two-photon-excited fluorescence and Z-scan techniques. The experimental results show that these dendritic fluorophores manifest strong and wide-dispersed two- and three-photon absorption bands within the near-infrared region, which indicates that 2,3,8-trifunctionalized indenoquinoxaline units are favorable building moieties for the construction of highly active multi-photon dyes. The maximum values of two- and three-photon absorption cross-sections for the largest dendron (i.e. compound D4) are ≈24800 GM and 6 × 10-78 cm6 s2, respectively. A nearly linear ascending relationship between π-structural expansion and nonlinear absorption is observed for these compounds, implying that the currently utilized structural arrangement does not exert deleterious or cooperative effects on the multi-photon absorption properties of this model system. In addition, a representative dendritic structure is selected to demonstrate efficient optical power-limiting against femtosecond laser pulses at 790 nm.
AB - A model compound set that contains a series of fan-shaped chromophores using 2,3,8-trifunctionalized indenoquinoxaline units as the major building block of their π-framework was synthesized and characterized for their two- and three-photon absorption properties in the femtosecond regime based on two-photon-excited fluorescence and Z-scan techniques. The experimental results show that these dendritic fluorophores manifest strong and wide-dispersed two- and three-photon absorption bands within the near-infrared region, which indicates that 2,3,8-trifunctionalized indenoquinoxaline units are favorable building moieties for the construction of highly active multi-photon dyes. The maximum values of two- and three-photon absorption cross-sections for the largest dendron (i.e. compound D4) are ≈24800 GM and 6 × 10-78 cm6 s2, respectively. A nearly linear ascending relationship between π-structural expansion and nonlinear absorption is observed for these compounds, implying that the currently utilized structural arrangement does not exert deleterious or cooperative effects on the multi-photon absorption properties of this model system. In addition, a representative dendritic structure is selected to demonstrate efficient optical power-limiting against femtosecond laser pulses at 790 nm.
UR - http://www.scopus.com/inward/record.url?scp=85027585534&partnerID=8YFLogxK
U2 - 10.1039/c7tc02584j
DO - 10.1039/c7tc02584j
M3 - 期刊論文
AN - SCOPUS:85027585534
SN - 2050-7534
VL - 5
SP - 8219
EP - 8232
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 32
ER -