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Functional Organic Dye and Pigment

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Colorants".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 2893

Special Issue Editor


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Guest Editor
Division of Ulsan Chemical R&B, Korea Research Institute of Chemical Technology, Ulsan 681-802, Republic of Korea
Interests: functional dye and pigment; absorption/emission NIR materials at >1000 nm for bio-imaging; security materials; design and synthesis of colorant for LCD color filters and image sensors; pigment synergists for pigment inks; stimuli-responsive materials based on fluorescent material

Special Issue Information

Dear Colleagues,

Functional organic dyes and pigments are organic materials with a specific function that absorb or emit a specific wavelength. In general, organic dyes and pigments are classified according to their solubility in the medium in which they are applied; that is, dyes are soluble and pigments are insoluble. Although the physical properties of dyes and pigments are different, the chemical structures of their chromophores are generally similar.

Organic dyes and pigments have been industrially applied for as colorants in coatings, textiles,  plastics, any many more. Recently, functional organic dyes and pigments have demonstrated differences in the function as well as purpose of coloring, such as in the context of electrically, emission-, and stimulus-responsive properties, depending on the application. Moreover, with recent industrial development, the application range of organic and dyes has been considerably diversified via their π-conjugation systems and special properties such as, for example, through their electrical properties in solar cells, OLEDs, OTFTs, and electrical sensors; special wavelength absorption/emission, such as in UV stabilizers, NIR absorption/emission materials, colorants for LCD and image sensor color filters; and stimulus-responsive color change for physical/chemical sensing.

The purpose of this Special Issue is to highlight materials, measurement methods, and applications broadly related to “Functional Organic Dyes and Pigments”.

Dr. Young Il Park
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

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Published Papers (1 paper)

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Research

12 pages, 5232 KiB  
Article
Influence of Material Properties on the Damage-Reporting and Self-Healing Performance of a Mechanically Active Dynamic Network Polymer in Coating Applications
by Da Hae Son, Gi Young Kim, Ji-Eun Jeong, Sang-Ho Lee, Young Il Park, Hoyoul Kong, In Woo Cheong and Jin Chul Kim
Molecules 2021, 26(9), 2468; https://doi.org/10.3390/molecules26092468 - 23 Apr 2021
Cited by 9 | Viewed by 2273
Abstract
We conducted a detailed investigation of the influence of the material properties of dynamic polymer network coatings on their self-healing and damage-reporting performance. A series of reversible polyacrylate urethane networks containing the damage-reporting diarylbibenzofuranone unit were synthesized, and their material properties (e.g., indentation [...] Read more.
We conducted a detailed investigation of the influence of the material properties of dynamic polymer network coatings on their self-healing and damage-reporting performance. A series of reversible polyacrylate urethane networks containing the damage-reporting diarylbibenzofuranone unit were synthesized, and their material properties (e.g., indentation modulus, hardness modulus, and glass-transition temperature) were measured conducting nanoindentation and differential scanning calorimetry experiments. The damage-reporting and self-healing performances of the dynamic polymer network coatings exhibited opposite tendencies with respect to the material properties of the polymer network coatings. Soft polymer network coatings with low glass-transition temperature (~10 °C) and indentation hardness (20 MPa) exhibited better self-healing performance (almost 100%) but two times worse damage-reporting properties than hard polymer network coatings with high glass-transition temperature (35~50 °C) and indentation hardness (150~200 MPa). These features of the dynamic polymer network coatings are unique; they are not observed in elastomers, films, and hydrogels, whereby the polymer networks are bound to the substrate surface. Evidence indicates that controlling the polymer’s physical properties is a key factor in designing high-performance self-healing and damage-reporting polymer coatings based on mechanophores. Full article
(This article belongs to the Special Issue Functional Organic Dye and Pigment)
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