Next Article in Journal
Chlorine Anion Encapsulation by Molecular Capsules Based on Cucurbit[5]uril and Decamethylcucurbit[5]uril
Previous Article in Journal
A Simplified Procedure for Indole Alkaloid Extraction from Catharanthus roseus Combined with a Semi-synthetic Production Process for Vinblastine
Article Menu

Export Article

Open AccessArticle
Molecules 2007, 12(7), 1316-1324; doi:10.3390/12071316

Design and Synthesis of a Coumarin-based Acidichromic Colorant

Department of Chemistry and Center for Nanoscience and Technology, Tunghai University, 181, Taichung-Kang Rd. Sec.3, Taichung, Taiwan 407
*
Author to whom correspondence should be addressed.
Received: 6 June 2007 / Revised: 1 July 2007 / Accepted: 1 July 2007 / Published: 6 July 2007
View Full-Text   |   Download PDF [114 KB, uploaded 18 June 2014]   |  

Abstract

This paper describes the fine-tuning of the acidichromic properties of a coumarin-containing colorant 1 by incorporation of electron-donating and electron-withdrawing substituents on the coumarin moiety. Colorant 1 can undergo two distinct and reversible color changes under both strongly acidic and basic conditions, but not in the presence of gaseous ammonia. The results indicated that the bromo-substituted compound 5b changes from red to yellow when exposed to gaseous ammonia, both in solution and on polycarbonate film, suggesting that an electron-withdrawing group at the 7-position of the coumarin moiety made the enolic hydrogen on 5b more susceptible to deprotonation by a base than in the unsubstituted compound 1. View Full-Text
Keywords: Coumarin; triketone; acidichromism; gas sensor; acid-base sensor Coumarin; triketone; acidichromism; gas sensor; acid-base sensor
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Lin, S.-L.; Kuo, P.-Y.; Yang, D.-Y. Design and Synthesis of a Coumarin-based Acidichromic Colorant. Molecules 2007, 12, 1316-1324.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]

Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top