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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 6 — Jun. 1, 2009
  • pp: 521–523

Electrochemical, thermal, and photophysical properties of novel two-photon absorption chromophores

Ying Qian, Qinqin Zhang, Kang Meng, Wei Huang, Changgui Lü, and Yiping Cui  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 6, pp. 521-523 (2009)


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Abstract

Electrochemical, thermal, and photophysical properties of novel two- (BPODPA), four- (BBPOPA), and six-branch (TBPOA) triphenylamine chromophores are studied. The decomposition temperature of chromophores reaches 373-412 C. The electrochemical properties is explored by cyclic voltammetry. The ionization potential of chromophores is in the range of 5.14-5.18 eV. Excitation at 400 nm reveals emission peaks at 483-487 nm and the fluorescence quantum yields are 0.73-0.75 in CH2Cl2 Two-photon absorption (TPA) properties of chromophores are measured by nonlinear transmission method. The maximum TPA cross-section values are measured at 758 nm to be 20369 GM (1 GM=10^{-50} cm4s/photon) for TBPOA, 7024 GM for BBPOPA, and 1227 GM for BPODPA, respectively. When pumped with 800-nm laser irradiation, chromophores show strong two-photon excited blue-green fluorescence at 502-518 nm. These results provide a basis for understanding the electronic and optical properties of the conjugated multi-branch chromophore in terms of the underlying molecular and electronic structures.

© 2009 Chinese Optics Letters

OCIS Codes
(160.0160) Materials : Materials
(160.2540) Materials : Fluorescent and luminescent materials
(160.4330) Materials : Nonlinear optical materials
(160.4890) Materials : Organic materials
(190.4400) Nonlinear optics : Nonlinear optics, materials

Citation
Ying Qian, Qinqin Zhang, Kang Meng, Wei Huang, Changgui Lü, and Yiping Cui, "Electrochemical, thermal, and photophysical properties of novel two-photon absorption chromophores," Chin. Opt. Lett. 7, 521-523 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-6-521


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