影像科学与光化学 ›› 1990, Vol. 8 ›› Issue (1): 64-67.DOI: 10.7517/j.issn.1674-0475.1990.01.64

• 研究简报 • 上一篇    下一篇

溶液中菁染料的状态对其在AgBr表面吸附效应的量热研究

宫永宽, 申洁如, 钟广学, 张祖训   

  1. 西北大学化学系 西安 710069
  • 收稿日期:1988-07-30 修回日期:1989-08-29 出版日期:1990-02-20 发布日期:1990-02-20
  • 通讯作者: 宫永宽

CALORIMETRY STUDY OF THE EFFECT OF AGGREGATION STATES OF A THIACARBOCYANINE DYE ON ITS ADSORPTION TO AgBr SURFACE

GONG YONG-KUAN, SHEN JIE-RU, ZHONG GUANG-XUE, ZHANG ZU-XUN   

  1. Chemistry Department, Northwest University, Xian 710069, P. R. China
  • Received:1988-07-30 Revised:1989-08-29 Online:1990-02-20 Published:1990-02-20

摘要: 用半导体精密量热计测得25±0.01℃时溴化银从DMF-H2O溶液中吸附噻碳菁染料(Ⅰ)的吸附热。发现由于溶液中染料聚集状态的不同导致吸附热明显不同,但吸附于溴化银表面的染料的聚集态则基本相同。

关键词: 菁染料, 聚集状态, 吸附热

Abstract: The states of aggregation of 3,3’-di-(y-sulfoporopyl)-9-ethyl-4,5,4’,5’-dibenzo-thiacarbo-cyanine (I) in DMF-H2O (15%DMF,v/v) solutions as well as on AgBr surface were studied by absorption and reflection spectra at room temperature.Adsorption heats of dye I on AgBr are obtioned calorimetrically from two solution of dye I in different aggregation states at 25±0.0001℃.The ΔH values (in kJ/mol dye) obtained are quite different.However,the reflection spectra and the isotherms at 25℃ showed almost the same adsorption state of dye I on AgBr.These results may give some information on the adsorption of dye I on AgBr surface.

Key words: Cyanine dye, Aggregation state, Adsorption heat