Department of Chemistry,Renmin University of China,Beijing,100872,P.R.China;
Engineering Research Center of Advanced Rare Earth Materials,Ministry of Education,Department of Chemistry,Tsinghua University,Beijing,100084,P.R.China;
CAS Key Laboratory of Colloid,Interface and Chemical Thermodynamics,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,P.R.China;
University of Chinese Academy of Sciences,Beijing,100049,P.R.China;
Photo-responsive DNA hydrogel; Azobenzene; Gel-sol transition; UV detection;