Metal-coordination synthesis of a natural injectable photoactive hydrogel with antibacterial and blood-aggregating functions for cancer thermotherapy and mild-heating wound repair† Kiyan Musaie,a Samin Abbaszadeh,b Vahideh Nosrati-Siahmazgi,a Mostafa Qahremani,a Shige Wang,c Mohammad Reza Eskandari,d Seyyed Vahid Niknezhad,e Fakhri Haghi,f Yulin Li, g Bo Xiao *h and Mohammad-Ali Shahbazi *aij Abstract Photothermal therapy (PTT) is a promising approach for treating cancer.