Delocalizing electrons in water with light

被引：54

作者：

Son, DH ^{[1
]}

Kambhampati, P ^{[1
]}

Kee, TW ^{[1
]}

Barbara, PF ^{[1
]}

机构：

[1] Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2001年 / 105卷 / 36期

关键词：

D O I：

10.1021/jp012431p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Experimental information on the spatial extent of the putative p and conduction band states of the hydrated electron (e(eq)) has been obtained by monitoring and controlling the electron/hole spatial separation of a photogenerated eq/hole pair using a femtosecond laser pulse sequence. Optical excitation of e(eq) with two photons is observed to dramatically alter its spatial distribution and geminate recombination yield with the hole. One-photon excitation, in contrast, has no effect on the spatial distribution. The results strongly confirm theoretical predictions on the size and location of excited states of e(eq).

引用

收藏

页码：8269 / 8272

页数：4

相关论文

共 23 条

[11] A COMPARISON OF CLASSICAL AND QUANTUM ANALYSES OF ELECTRON LOCALIZATION SITES IN LIQUID WATER [J].

MOTAKABBIR, KA ;

SCHNITKER, J ;

ROSSKY, PJ .

JOURNAL OF CHEMICAL PHYSICS, 1992, 97 (03) :2055-2060

[12] THE ROLE OF SOLVENT INTRAMOLECULAR MODES IN EXCESS ELECTRON SOLVATION DYNAMICS [J].

MURPHREY, TH ;

ROSSKY, PJ .

JOURNAL OF CHEMICAL PHYSICS, 1993, 99 (01) :515-522

[13] Stochastic simulation of the electron radiolysis of water and aqueous solutions [J].

Pimblott, SM ;

LaVerne, JA .

JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (33) :5828-5838

[14] INDEPENDENT PAIRS MODELING OF THE KINETICS FOLLOWING THE PHOTOIONIZATION OF LIQUID WATER [J].

PIMBLOTT, SM .

JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (18) :6946-6951

[15] Evaluation of quantum transition rates from quantum-classical molecular dynamics simulations [J].

Prezhdo, OV ;

Rossky, PJ .

JOURNAL OF CHEMICAL PHYSICS, 1997, 107 (15) :5863-5878

[16] Solvent mode participation in the nonradiative relaxation of the hydrated electron [J].

Prezhdo, OV ;

Rossky, PJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (43) :17094-17102

[17] DYNAMICS OF CHEMICAL PROCESSES IN POLAR-SOLVENTS [J].

ROSSKY, PJ ;

SIMON, JD .

NATURE, 1994, 370 (6487) :263-269

[18] A-PRIORI CALCULATION OF THE OPTICAL-ABSORPTION SPECTRUM OF THE HYDRATED ELECTRON [J].

SCHNITKER, J ;

MOTAKABBIR, K ;

ROSSKY, PJ ;

FRIESNER, R .

PHYSICAL REVIEW LETTERS, 1988, 60 (05) :456-459

[19] Femtosecond solvation dynamics of the hydrated electron [J].

Silva, C ;

Walhout, PK ;

Yokoyama, K ;

Barbara, PF .

PHYSICAL REVIEW LETTERS, 1998, 80 (05) :1086-1089

[20] One-photon UV detrapping of the hydrated electron [J].

Son, DH ;

Kambhampati, P ;

Kee, TW ;

Barbara, PF .

CHEMICAL PHYSICS LETTERS, 2001, 342 (5-6) :571-577