Dynamics of photoisomerisation and rotational relaxation of 3,3′-diethyloxadicarbocyanine iodide in room temperature ionic liquid and binary mixture of ionic liquid and water

被引：41

作者：

Chakrabarty, D ^{[1
]}

Chakraborty, A ^{[1
]}

Hazra, P ^{[1
]}

Seth, D ^{[1
]}

Sarkar, N ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 397卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2004.08.109

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：

The dynamics of photoisomerisation and rotational relaxation of 3,3'-diethyloxadicarbocyanine iodide (DODCI) in room temperature ionic liquid (IL) and binary mixture of IL and water are investigated using steady state and time resolved fluorescence spectroscopy. The photoisomerisation rate of DODCI is drastically retarded in room temperature IL 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) compared to isopolar solvent. The rotational relaxation time of the same dye is much slower in IL compared to the isopolar conventional solvent and become faster in presence of traces amount of water. The activation energy for photoisomerisation in different media (IL and IL-water) is also determined. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：216 / 221

页数：6

共 37 条

[1] How polar are room-temperature ionic liquids? [J].

Aki, SNVK ;

Brennecke, JF ;

Samanta, A .

CHEMICAL COMMUNICATIONS, 2001, (05) :413-414

[2] TEMPERATURE-DEPENDENCE OF FLUORESCENCE AND PHOTOISOMERIZATION IN SYMMETRICAL CARBOCYANINES - INFLUENCE OF MEDIUM VISCOSITY AND MOLECULAR-STRUCTURE [J].

ARAMENDIA, PF ;

NEGRI, RM ;

SANROMAN, E .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (12) :3165-3173

[3] Solvation dynamics of coumarin 153 in several classes of ionic liquids: cation dependence of the ultrafast component [J].

Arzhantsev, S ;

Ito, N ;

Heitz, M ;

Maroncelli, M .

CHEMICAL PHYSICS LETTERS, 2003, 381 (3-4) :278-286

[4] The cybotactic region surrounding fluorescent probes dissolved in 1-butyl-3-methylimidazolium hexafluorophosphate: Effects of temperature and added carbon dioxide [J].

Baker, SN ;

Baker, GA ;

Kane, MA ;

Bright, FV .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (39) :9663-9668

[5]

Carmichael AJ, 2000, J PHYS ORG CHEM, V13, P591, DOI 10.1002/1099-1395(200010)13:10<591::AID-POC305>3.0.CO

[6]

2-2

[7] Dynamics of solvent relaxation in room temperature ionic liquids [J].

Chakrabarty, D ;

Hazra, P ;

Chakraborty, A ;

Seth, D ;

Sarkar, N .

CHEMICAL PHYSICS LETTERS, 2003, 381 (5-6) :697-704

[8] Dynamic solvation in room-temperature ionic liquids [J].

Chowdhury, PK ;

Halder, M ;

Sanders, L ;

Calhoun, T ;

Anderson, JL ;

Armstrong, DW ;

Song, X ;

Petrich, JW .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (29) :10245-10255

[9] Photoisomerisation near a hydrophobic surface. Diethyloxadicarbocyanine iodide in a reverse micelle [J].

Datta, A ;

Mandal, D ;

Pal, SK ;

Bhattacharyya, K .

CHEMICAL PHYSICS LETTERS, 1997, 278 (1-3) :77-82

[10] On the structure and dynamics of ionic liquids [J].

Del Pópolo, MG ;

Voth, GA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (05) :1744-1752

← 1 2 3 4 →