Investigation of the molecular extraction process in single subpicoliter droplets using a near-infrared laser Raman trapping system

被引：26

作者：

Ajito, K ^{[1
]}

Morita, M ^{[1
]}

Torimitsu, K ^{[1
]}

机构：

[1] Nippon Telegraph & Telephone Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

来源：

ANALYTICAL CHEMISTRY | 2000年 / 72卷 / 19期

关键词：

D O I：

10.1021/ac0002994

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The near-infrared (NIR) laser Raman trapping system was applied to study liquid-liquid extraction in a single droplet in a subpicoliter range. The system trapped a single subpicoliter toluene droplet in water using the NIR laser beam and provided time-dependent optical images of the droplet during liquid-liquid extraction. The size of the trapped droplet gradually increased after p-nonylphenol solution was added in water. The Raman spectra of the droplet prove that the increase of the droplet size was caused by the absorption of p-nonylphenol from the water. The distribution coefficient of p-nonylphenol in the subpicoliter droplet was much higher than that in bulk solution.

引用

页码：4721 / 4725

页数：5

共 21 条

[1] Imaging and spectroscopic analysis of single microdroplets containing p-cresol using the near-infrared laser tweezers Raman microprobe system [J].

Ajito, K ;

Morita, M .

SURFACE SCIENCE, 1999, 427-28 :141-146

[2] Combined near-infrared Raman microprobe and laser trapping system: Application to the analysis of a single organic microdroplet in water [J].

Ajito, K .

APPLIED SPECTROSCOPY, 1998, 52 (03) :339-342

[3] Direct structural observation of liquid molecules in single picoliter microdroplets using near-infrared Raman microprobe spectroscopy combined with laser trapping and chemical-tomographic imaging techniques [J].

Ajito, K .

THIN SOLID FILMS, 1998, 331 (1-2) :181-188

[4] Three-Dimensional Molecular Imaging of p-Cresol in a Micro-Capillary Cell using Near-Infrared Raman Microprobe Chemical Tomography [J].

Ajito, Katsuhiro ;

Morita, Masao .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1998, 314 :191-196

[5] OBSERVATION OF A SINGLE-BEAM GRADIENT FORCE OPTICAL TRAP FOR DIELECTRIC PARTICLES [J].

ASHKIN, A ;

DZIEDZIC, JM ;

BJORKHOLM, JE ;

CHU, S .

OPTICS LETTERS, 1986, 11 (05) :288-290

[6] OPTICAL TRAPPING AND MANIPULATION OF SINGLE CELLS USING INFRARED-LASER BEAMS [J].

ASHKIN, A ;

DZIEDZIC, JM ;

YAMANE, T .

NATURE, 1987, 330 (6150) :769-771

[7] OPTICAL TRAPPING IN ANIMAL AND FUNGAL CELLS USING A TUNABLE, NEAR-INFRARED TITANIUM-SAPPHIRE LASER [J].

BERNS, MW ;

AIST, JR ;

WRIGHT, WH ;

LIANG, H .

EXPERIMENTAL CELL RESEARCH, 1992, 198 (02) :375-378

[8] Characterization of electrochemical responses in picoliter volumes [J].

Clark, RA ;

Ewing, AG .

ANALYTICAL CHEMISTRY, 1998, 70 (06) :1119-1125

[9] Raman vibrational evidence for the presence of conjugated regions in individual micron diameter polystyrene particles irradiated with visible radiation [J].

Crawford, KD ;

Hughes, KD .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (13) :2325-2328

[10] Raman investigation of photopolymerization reactions of single optically levitated microparticles [J].

Esen, C ;

Kaiser, T ;

Schweiger, G .

APPLIED SPECTROSCOPY, 1996, 50 (07) :823-828

← 1 2 3 →