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Literature DB >> 26797795

Conformational Switching of π-Conjugated Junctions from Merocyanine to Cyanine States by Solvent Polarity.

Alhama Arjona-Esteban¹, Matthias Stolte¹, Frank Würthner².

Abstract

Directed by the solvent polarity, the prevalent conformation of a polymethine dye bearing a branched π-conjugated junction can be switched from a heptamethine donor-acceptor (DA) merocyanine-type π-conjugated system to a nonamethine DAD cyanine-type π-conjugated scaffold. Concomitantly the absorption maximum shifts from 585 nm in dichloromethane to 748 nm in methanol solution.

Entities: Chemical Species

Keywords: conformation analysis; cyanines; dyes/pigments; solvatochromism

Year: 2016 PMID： 26797795 DOI： 10.1002/anie.201510620

Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN： 1433-7851 Impact factor: 15.336

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Cited

4 in total

1. Sterically Shielded Heptamethine Cyanine Dyes for Bioconjugation and High Performance Near-Infrared Fluorescence Imaging.

Authors: Dong-Hao Li; Cynthia L Schreiber; Bradley D Smith
Journal: Angew Chem Int Ed Engl Date: 2020-05-11 Impact factor: 15.336

Conformational Switching of π-Conjugated Junctions from Merocyanine to Cyanine States by Solvent Polarity.

1. Sterically Shielded Heptamethine Cyanine Dyes for Bioconjugation and High Performance Near-Infrared Fluorescence Imaging.

Review 2. Productive Manipulation of Cyanine Dye π-Networks.

3. A Method of Calculating the Kamlet-Abboud-Taft Solvatochromic Parameters Using COSMO-RS.

4. Naphthalimide-Fused Dipyrrins: Tunable Halochromic Switches and Photothermal NIR-II Dyes.