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  • A zwitterionic squaraine dye with a large Stokes shift for in vivo and site-selective protein sensing.

A zwitterionic squaraine dye with a large Stokes shift for in vivo and site-selective protein sensing.

Chemical communications (Cambridge, England) (2012-10-20)
Yongqian Xu, Qin Liu, Xiaopeng Li, Chrys Wesdemiotis, Yi Pang
ABSTRACT

A novel squaraine dye (SQ) exhibits improved fluorescence response toward protein detection by incorporation of a zwitterionic structure. With the aid of a dansylamide (DNSA) substituent, the new probe (DNSA-SQ) exhibits remarkable selectivity in binding to site I (a specific substructure in protein).

MATERIALS
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Product Description

Sigma-Aldrich
5-(Dimethylamino)-1-naphthalenesulfonamide, 99%