In this work, we design and synthesize a new near-infrared (NIR) ratiometric fluorescent probe FD-H2S for the highly sensitive (DL 68.2 nM) detection of H2S with fast response (15 s), large emission shift (220 nm) and excellent enhancement (168-fold in ratiometric value). The probe could be applied for monitoring and imaging of exogenous or endogenous H2S in live MCF-7 cells and in live mice with the fastest response.

In this paper new pad-dry-bake finishing processes for silk fabric using epoxy resins were investigated. NaH^PO^ was employed as the buffer for the aikali produced in the course of processing in order to inhibit the yellowing of the fabric. Padding epoxy resin and a catalyst to the fabric in a separate bath renders the solution stable and helps to retain the natural luster and hydrophilicity of the silk. The processes in which epoxy resins, especially TEG and DEE, would provide significant modifications in resistance to light-yellowing and creaseproofing are examined and the 'water-spot' problem, which can occur with treated tussah silk fabric, was substantially eliminated.