Main Page
About Science
Faculty Deanship
Letter of Dean
Overview of Deanship
Vice Deans
Vice Dean
Letter of Vice-dean
Overview of Vice-deanship
Vice Dean for Graduate Studies
Letter of Vice Dean for Graduate Studies
Overview of Vice Dean of Postgraduate Studies
Research and Innovation Unit
Vice Dean for Development
Letter of Vice-dean of Development
Overview of Vice-dean of Development
Support Unit and Technical Support
Males Campus
Females Campus
Vice Dean for Girls Campus
Faculty Management
Letter of Managing Director-Boys Campus
Letter of Managing Director-Girls Campus
Overview of Management
Educational Affairs
Males Campus
Staff
Females Campus
Contact Us
Research
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Faculty of Sciences
Document Details
Document Type
:
Article In Journal
Document Title
:
Synthesis and absorption spectral properties of bis-methine dyes exemplified by 2,5-bis-arylidene-1-dicyanomethylene-cyclopentane
Synthesis and absorption spectral properties of bis-methine dyes exemplified by 2,5-bis-arylidene-1-dicyanomethylene-cyclopentane
Document Language
:
Arabic
Abstract
:
A range of methine dyes has been synthesized by condensation of highly electronegative active methylene compound dicyanomethylenecyclopentane derived from cyclopentanone with the formyl group of substituted benzaldehydes. The electronic absorption spectroscopic properties of the dyes were investigated. In general, substituents on the aromatic aldehyde moiety have a significant effect on the visible absorption maxima of the dyes; increasing the solvent polarity also had a pronounced effect on the absorption maxima.
Journal Name
:
JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN
Volume
:
26
Issue Number
:
1
Publishing Year
:
2004 AH
Added Date
:
Saturday, June 14, 2008
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
أ.د.عبد الله بن محمـد أحمـد عسيــــري
Asiri AM
Researcher
Back To Researches Page