230306-78-2Relevant academic research and scientific papers
Facile preparative redox chemistry of bis(4-dialkylaminophenyl)squaraine dyes
Griffiths, John,Park, Sooyoul
, p. 7669 - 7671 (2007/10/03)
Bis(4-dialkylaminophenyl)squaraine dyes are readily reduced in solution by borohydride to give alkali soluble leuco compounds, which exist in the 3-hydroxy-2,4-(4-dialkylaminophenyl)cyclobutenone tautomeric form. The leuco dyes can be oxidised rapidly back to the squaraine dye, thus providing a means of temporarily solubilising the squaraine dye in water. The leuco compounds undergo substitution reactions typical of vinylogous carboxylic acids.
Aggregation-induced linear and non-linear optical properties of four hydroxy-substituted analogues of 2,4-bis[4-(dibutylamino)phenyl]squaraine
Ashwell, Geoffrey J.,Williamson, Patricia C.,Green, Andrew,Bahra, Gurmit S.,Brown, Christopher R.
, p. 599 - 604 (2007/10/03)
Langmuir films of the title compound, 2,4-bis[4-(dibutylamino)phenyl]squaraine, Sq0, and its substituted analogues, Sq1 (monohydroxy) to Sq4 (tetrahydroxy), exhibit three well defined phases at the air-water interface: λmax 525-550 nm (H-aggreg
