PICOSECOND OPTICAL SWITCHING BASED ON BIPHOTONIC EXCITATION OF AN ELECTRON DONOR-ACCEPTOR-DONOR MOLECULE

被引：411

作者：

ONEIL, MP ^{[1
]}

NIEMCZYK, MP ^{[1
]}

SVEC, WA ^{[1
]}

GOSZTOLA, D ^{[1
]}

GAINES, GL ^{[1
]}

WASIELEWSKI, MR ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439

来源：

SCIENCE | 1992年 / 257卷 / 5066期

关键词：

D O I：

10.1126/science.257.5066.63

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

An electron donor-acceptor-donor molecule consisting of two porphyrin donors rigidly attached to the two-electron acceptor N,N'-diphenyl-3,4,9,10-perylenebis(dicarboximide) acts as a light intensity-dependent molecular switch on a picosecond time scale. Excitation of the porphyrins within this molecule with subpicosecond laser pulses results in single or double reduction of the acceptor depending on the light intensity. The singly and doubly reduced electron acceptors absorb light strongly at 713 and 546 nanometers, respectively. Because these absorption changes are produced solely by electron transfers, this molecular switch effectively has no moving parts and switches significantly faster than photochromic molecules that must undergo changes in molecular structure.

引用

页码：63 / 65

页数：3

共 31 条

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