LOCATION OF THE LOW-ENERGY AG-1 STATE IN A POLYTHIOPHENE OLIGOMER BY 2-PHOTON ABSORPTION-SPECTROSCOPY - ALPHA-SEXITHIENYL

被引：97

作者：

PERIASAMY, N ^{[1
]}

DANIELI, R ^{[1
]}

RUANI, G ^{[1
]}

ZAMBONI, R ^{[1
]}

TALIANI, C ^{[1
]}

机构：

[1] TATA INST FUNDAMENTAL RES, BOMBAY 400005, INDIA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.68.919

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The two-photon excitation spectrum in polycrystalline alpha-sexithienyl (T6) thin film has been investigated at 4.2 K in the spectral range between 910 and 1180 nm of the fundamental laser radiation. The intense two-photon absorption band at 18350 cm-1 is assigned to the 2(1)A(g) exciton band origin. The comparison of the one-photon and two-photon excitation spectra shows that the lowest "gerade" exciton level lies at 898 cm-1 above the lowest one-photon-allowed 1(1)B(u) exciton level.

引用

页码：919 / 922

页数：4

共 30 条

[1] THEORETICAL INVESTIGATION OF THE RELAXED GEOMETRY IN THE 1ST SINGLET BU EXCITED-STATE OF POLYACETYLENE OLIGOMERS
BREDAS, JL
TOUSSAINT, JM
[J]. JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (04) : 2624 - 2629
[2] CHARRA F, 1990, NATO ADV SCI I E-APP, V182, P409
[3] Craig D.P., 1968, EXCITONS MOL CRYSTAL
[4] Davydov A. S., 1971, THEORY MOL EXCITONS
[5] SPECTRUM OF CHI(3)(-3-OMEGA-OMEGA, OMEGA, OMEGA, OMEGA) IN POLYACETYLENE - AN APPLICATION OF THE FREE-ELECTRON LASER IN NONLINEAR OPTICAL SPECTROSCOPY
FANN, WS
BENSON, S
MADEY, JMJ
ETEMAD, S
BAKER, GL
KAJZAR, F
[J]. PHYSICAL REVIEW LETTERS, 1989, 62 (13) : 1492 - 1495
[6] FICHOU D, 1989, SPEC PUBL R SOC CHEM, V69, P176
[7] INFRARED PHOTOLUMINESCENCE AND THE 1AG STATE IN POLYACETYLENE
FITCHEN, DB
[J]. SYNTHETIC METALS, 1984, 9 (02) : 341 - 346
[8] CRYSTAL PACKING AND LATTICE ENERGIES OF POLYTHIENYLS - CALCULATIONS AND PREDICTIONS
GAVEZZOTTI, A
FILIPPINI, G
[J]. SYNTHETIC METALS, 1991, 40 (02) : 257 - 266
[9] HEEGER AJ, 1988, REV MOD PHYS, V60, P3
[10] HUDSON BS, 1982, EXCITED STATES, V6, P1

← 1 2 3 →