LASER-INDUCED POLYMERIZATION OF SUBMONOLAYER FORMALDEHYDE ON AG(111)

被引：29

作者：

FLECK, LE ^{[1
]}

FEEHERY, WF ^{[1
]}

PLUMMER, EW ^{[1
]}

YING, ZC ^{[1
]}

DAI, HL ^{[1
]}

机构：

[1] UNIV PENN,RES STRUCT MATTER LAB,PHILADELPHIA,PA 19104

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 22期

关键词：

D O I：

10.1021/j100175a003

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：

Formaldehyde (H2CO) physisorbed at submonolayer coverages on Ag(111) at 80 K is observed to polymerize upon irradiation with 355-nm laser pulses in a nonthermal process. Polymerization occurs over a wide coverage range-from greater than 1 monolayer to as low as 0.1 monolayer. Polymerization is most likely initiated by radicals generated from H2CO dissociation. In contrast to the monomer which desorbs at 110 K, the polymer remains stable on the surface up to 210 K.

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页码：8428 / 8430

页数：3

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共 24 条

[1] CALCULATIONS OF THE SURFACE-TEMPERATURE RISE AND DESORPTION TEMPERATURE IN LASER-INDUCED THERMAL-DESORPTION [J].

BURGESS, D ;

STAIR, PC ;

WEITZ, E .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1986, 4 (03) :1362-1366

[2] BIMOLECULAR PHOTOREACTION OF ADSORBATES - 2-HX-]H-2+X-2 (X=CL,BR) [J].

CHO, CC ;

POLANYI, JC ;

STANNERS, CD .

JOURNAL OF CHEMICAL PHYSICS, 1989, 90 (01) :598-600

[3] ELECTRONICALLY EXCITED PHOTODISSOCIATION AND DESORPTION OF ADSORBATES - CH2I2 ON AL2O3 AND AG SURFACES [J].

DOMEN, K ;

CHUANG, TJ .

PHYSICAL REVIEW LETTERS, 1987, 59 (13) :1484-1487

[4] OXYGEN ADSORPTION ON (111) FACE OF SILVER [J].

DWEYDARI, AW ;

MEE, CHB .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1973, 17 (01) :247-250

[5] PHOTOLYSIS OF CHEMISORBED DIOXYGEN ON PD(111) - DEPENDENCE ON PHOTON ENERGY [J].

HANLEY, L ;

GUO, XC ;

YATES, JT .

JOURNAL OF CHEMICAL PHYSICS, 1989, 91 (11) :7220-7227

[6] CROSS-SECTIONS AND NO PRODUCT STATE DISTRIBUTIONS RESULTING FROM SUBSTRATE MEDIATED PHOTODISSOCIATION OF NO2 ADSORBED ON PD(111) [J].

HASSELBRINK, E ;

JAKUBITH, S ;

NETTESHEIM, S ;

WOLF, M ;

CASSUTO, A ;

ERTL, G .

JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (05) :3154-3169

[7] THE DECOMPOSITION OF FORMALDEHYDE ON PT(111) - A TPD AND HREELS STUDY [J].

HENDERSON, MA ;

MITCHELL, GE ;

WHITE, JM .

SURFACE SCIENCE, 1987, 188 (1-2) :206-218

[8] CAN PULSED LASER EXCITATION OF SURFACES BE DESCRIBED BY A THERMAL-MODEL [J].

HICKS, JM ;

URBACH, LE ;

PLUMMER, EW ;

DAI, HL .

PHYSICAL REVIEW LETTERS, 1988, 61 (22) :2588-2591

[9] REACTIONS OF FORMIC-ACID AND FORMALDEHYDE ON RH(111) AND RH(111)-(2X2)O SURFACES [J].

HOUTMAN, C ;

BARTEAU, MA .

SURFACE SCIENCE, 1991, 248 (1-2) :57-76

[10] VIBRATIONAL SPECTRA OF TRIOXANE AND TRIOXANE-D6 [J].

KOBAYASH.M ;

IWAMOTO, R ;

TADOKORO, H .

JOURNAL OF CHEMICAL PHYSICS, 1966, 44 (03) :922-&