Functional Organic Dyes and Pigments
A special issue of Materials (ISSN 1996-1944).
Deadline for manuscript submissions: closed (15 July 2016) | Viewed by 9970
Special Issue Editors
Special Issue Information
Dear Colleagues,
Dyes and pigments are generally classified on the basis of their solubility. Pigments can be inorganic or organic, white, black or coloured materials that are insoluble in the medium in which they are applied. Dyes, on the other hand, are soluble and, as a consequence, lose their solid-state structural properties upon application. Given that both pigments and dyes are, in general, similar in terms of their chemical composition, it is in the nature of their physical properties that they are normally differentiated.
Organic dyes and pigments have been employed for centuries in the colouration and protection of antiquities. The discovery of Mauvine by Perkin in 1856 heralded the emergence of industrially produced colouration technologies, which have been developed and exploited over the last century, predominantly in areas such as textiles and coating effects. Historically, the “function” of dyes and pigments has focused on their interaction with light, specifically involving absorption and reflection processes.
More recently, a new class of materials, which have evolved from traditional colourants and which are described as “functional dyes and pigments”, has emerged with considerable impact. Owing to their extensive conjugated π-electron systems, many of these materials display unique electronic properties, particularly in the solid state, and as a consequence exhibit interesting optical and electronic behaviour. New technologies based on these materials involve novel interactions and the manipulation of light that encompass reversible photochemical and photophysical processes, involving absorption, emission, and energy transfer. Applications of these high performance conjugated systems are extensive and include imaging and modern printing technologies, such as electrophotography, thermal and ink-jet printing, and invisible imaging, such as optical data storage and security printing; display technologies, such as LCDs and OLEDs; electronic materials, such as organic semiconductors, OFETS, solar cell technologies, organic spintronics, electronic sensors, and molecular scale logic devices; diagnostics in the form of sensors based upon absorption and emission of light; biomedical application, such as photodynamic therapy; and non-linear optics and laser dyes.
There are many other technologies and applications involving functional dyes and pigments. The field is constantly expanding to embrace significant new areas of research and innovation in synthetic organic chemistry, solid-state chemistry, crystallography, photophysical and photochemical characterisation, application, device fabrication and theoretical modelling.
It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.
Dr. Callum McHugh
Dr. Jesus Calvo-Castro
Guest Editor
Manuscript Submission Information
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Keywords
- Dyes and Pigments
- Semiconductors and OFETS
- Fluorescence sensors
- Imaging technologies, OLEDS
- Dye sensitised solar cells
