Mechanism of organosilane self-assembled monolayer formation on silica studied by second-harmonic generation

被引:57
作者
Zhao, XL [1 ]
Kopelman, R [1 ]
机构
[1] UNIV MICHIGAN, DEPT CHEM, ANN ARBOR, MI 48109 USA
关键词
D O I
10.1021/jp9526657
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
Organosilane self-assembled monolayer (SAM) formation from solution on fused silica surfaces has been studied through the surface silanol group chemical reaction. The method is based on second-harmonic generation (SHG) efficiency as a function of pH. Direct experimental support is provided for the following organosilane SAM structure at the silica surface: (1) the organosilane SAM formation does not have any preference toward different surface sites; (2) during organosilane SAM formation process at the silica surface, most of the silica surface functional groups remain intact and therefore maintain their surface chemistry; (3) the silica surface is much rougher than the organosilane SAM on top of it and therefore provides more surface functional groups per unit area. This detailed understanding of the organosilane SAM formation may provide guidance for the proper application of SAM to various surface modification techniques, e.g., in microelectronic engineering or near-field optical chemical sensors.
引用
收藏
页码:11014 / 11018
页数:5
相关论文
共 28 条
[1]  
ADAMSON AW, 1990, PHYS CHEM SURFACES, pCH5
[2]   EVIDENCE FOR A UNIQUE CHAIN ORGANIZATION IN LONG-CHAIN SILANE MONOLAYERS DEPOSITED ON 2 WIDELY DIFFERENT SOLID SUBSTRATES [J].
ALLARA, DL ;
PARIKH, AN ;
RONDELEZ, F .
LANGMUIR, 1995, 11 (07) :2357-2360
[3]   EXCHANGE OF NA+ FOR SILANOLIC PROTONS OF SILICA [J].
ALLEN, LH ;
MATIJEVI.E ;
METIES, L .
JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1971, 33 (05) :1293-&
[4]   STABILITY OF COLLOIDAL SILICA .I. EFFECT OF SIMPLE ELECTROLYTES [J].
ALLEN, LH ;
MATIJEVI.E .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1969, 31 (03) :287-&
[5]   STABILITY OF COLLOIDAL SILICA .2. ION EXCHANGE [J].
ALLEN, LH ;
MATIJEVIC, E .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1970, 33 (03) :420-+
[6]   COVALENT BINDING OF PD CATALYSTS TO LIGATING SELF-ASSEMBLED MONOLAYER FILMS FOR SELECTIVE ELECTROLESS METAL-DEPOSITION [J].
DRESSICK, WJ ;
DULCEY, CS ;
GEORGER, JH ;
CALABRESE, GS ;
CALVERT, JM .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (01) :210-220
[7]   A MODEL FOR DETERMINING THE COMPOSITION OF LAYER STRUCTURED SAMPLES USING XPS ELECTRON TAKE-OFF ANGLE EXPERIMENTS [J].
HAZELL, LB ;
BROWN, IS ;
FREISINGER, F .
SURFACE AND INTERFACE ANALYSIS, 1986, 8 (01) :25-31
[8]  
HELLWARTH RW, 1977, PROG QUANT ELECTRON, V5, P1
[9]   PATTERNED SELF-ASSEMBLED MONOLAYERS AND MESOSCALE PHENOMENA [J].
KUMAR, A ;
ABBOTT, NL ;
KIM, E ;
BIEBUYCK, HA ;
WHITESIDES, GM .
ACCOUNTS OF CHEMICAL RESEARCH, 1995, 28 (05) :219-226
[10]   EFFECTS OF SURFACE HYDRATION ON THE DEPOSITION OF SILANE MONOLAYERS ON SILICA [J].
LEGRANGE, JD ;
MARKHAM, JL ;
KURKJIAN, CR .
LANGMUIR, 1993, 9 (07) :1749-1753