Production and photofragmentation of Au nanoparticles by 355 nm picosecond radiation

被引：6

作者：

Giorgetti, E. ^{[1
,2
]}

Giusti, A. ^{[4
]}

Giammanco, F. ^{[3
]}

Marsili, P. ^{[3
]}

机构：

[1] CNR, INSTM, Florence, Italy

[2] CNR, Ist Sistemi Complessi, Florence, Italy

[3] Univ Pisa, Dept Phys E Fermi, Pisa, Italy

[4] Univ Paris 11, Inst Chim Mol & Mat Orsay, F-91405 Orsay, France

来源：

OPTICS AND SPECTROSCOPY | 2009年 / 107卷 / 03期

关键词：

PULSE-LASER EXCITATION; GOLD NANOPARTICLES; IRRADIATION; DYNAMICS;

D O I：

10.1134/S0030400X09090288

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Fifth generation ethylendiamine-core poly(amidoamine) (PAMAM G5)-capped-gold-nanoparticles were prepared by ps laser ablation in water, by using the third harmonic of a ps Nd:YAG laser. Post-irradiation with the same wavelength causes efficient photofragmentation of the nanoparticles. We performed a comparison with analogous tests carried out with 532 nm ps pulses. We found that, while 532-nm-fragmentation is a 2-photon photoelectric process, 355-nm-fragmentation is linear.

引用

收藏

页码：474 / 479

页数：6

相关论文

共 9 条

[1] Preparation of gold colloids with UV irradiation using dendrimers as stabilizer [J].

Esumi, K ;

Suzuki, A ;

Aihara, N ;

Usui, K ;

Torigoe, K .

LANGMUIR, 1998, 14 (12) :3157-3159

[2] THEORY OF THE MULTIPHOTON PHOTOELECTRIC EFFECT - A STEPWISE EXCITATION PROCESS [J].

GEORGES, AT .

PHYSICAL REVIEW B, 1995, 51 (19) :13735-13738

[3] Multiphoton fragmentation of PAMAM G5-capped gold nanoparticles induced by picosecond laser irradiation at 532 nm [J].

Giusti, Anna ;

Giorgetti, Emilia ;

Laza, Simona ;

Marsili, Paolo ;

Giammanco, Francesco .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (41) :14984-14991

[4] Electron kinetics and emission for metal nanoparticles exposed to intense laser pulses -: art. no. 035424 [J].

Grua, P ;

Morreeuw, JP ;

Bercegol, H ;

Jonusauskas, G ;

Vallée, F .

PHYSICAL REVIEW B, 2003, 68 (03)

[5] Subpicosecond transient dynamics in gold nanoparticles encapsulated by a fluorophore-terminated monolayer [J].

Gu, T ;

Ye, T ;

Simon, JD ;

Whitesell, JK ;

Fox, MA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (08) :1765-1771

[6] Ultrafast electron relaxation dynamics in coupled metal nanoparticles in aggregates [J].

Jain, PK ;

Qian, W ;

El-Sayed, MA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (01) :136-142

[7]

Kreibig U., 1995, Optical properties of metal clusters, V25

[8] Ionization of gold nanoparticles in solution by pulse laser excitation as studied by mass spectrometric detection of gold cluster ions [J].

Shoji, Makoto ;

Miyajima, Ken ;

Mafune, Fumitaka .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (06) :1929-1932

[9] Thermionic emission of electrons from gold nanoparticles by nanosecond pulse-laser excitation of interband [J].

Yamada, Kunihiro ;

Miyajima, Ken ;

Mafune, Fumitaka .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (30) :11246-11251