Synthesis and Absorption Spectral Shifts of Novel Squarylium Dyes.
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- Koh Kwang-Nak
- Sensor Technology Research Center, Kyungpook National University
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- Hwang Seok-Hwan
- Department of Dyeing and Finishing, Kyungpook National University
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- Han Sun-Kyung
- Department of Dyeing and Finishing, Kyungpook National University
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- Kang Shin-Won
- Sensor Technology Research Center, Kyungpook National University
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- Kim Sung-Hoon
- Department of Dyeing and Finishing, Kyungpook National University
Bibliographic Information
- Other Title
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- Synthesis and Absorption Spectral Shift
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Abstract
Two kinds of new squarylium dyes have been prepared. Aminosquarylium dyes (ASQ) (6) have been prepared by condensation of aminosquarates (3) and 1-ethyl-2, 3, 3-trimethylindolenium iodide (5). New aminosquarylium dye 6a absorbed at a longer wavelength (18nm) than the corresponding squarylium dye (SQ) 7c.<br>A new class of dithiosquarylium dyes (DTSQ 8) has also been synthesized by the reaction of squarylium dye (SQ) with Lawesson's reagent or P4S10. The λmax of DTSQ dyes undergoes a bathochromic shift of about 25nm compared with corresponding SQ dyes.<br>The visible absorption spectra of ASQ and DTSQ dyes are well accounted for by PPP-MO calculations.
Journal
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- Sen'i Gakkaishi
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Sen'i Gakkaishi 54 (2), 72-76, 1998
The Society of Fiber Science and Technology, Japan
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Details
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- CRID
- 1390282679805141120
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- NII Article ID
- 130004206036
- 10002058917
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- NII Book ID
- AN00131651
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- ISSN
- 18842259
- 00379875
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- NDL BIB ID
- 4402968
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed