Monitoring of sweat pH play important roles in physiological health,
nutritional balance, psychological stress, and sports performance. The
combination of functional MOFs with phosphorescent material to acquire
the real-time physiological information, as well as the application of
dual mode anti-counterfeiting, have seldom been reported. Herein, we
reported MOF and phosphorescent dyes based multifunctional gel films
with H+ response and the related mechanism was studied
in detail. Upon induction of H+, the composite gel
film exhibited decreased fluorescent signal but enhanced room
temperature phosphorescence (RTP), which could be utilized for sweat pH
sensing through a dual-mode. Moreover, multifunctional gel films
exhibited a potential application in information encryption and
anti-counterfeiting by designing of stimulus responsive multiple
patterns. This research opens a new avenue for portable and non-invasive
sweat pH monitoring method, provides opportunities for effective
anti-counterfeiting, also offers new insights stimulus-responsive
multifunctional materials and their potential applications.
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