TABLE 1.

Triggers used to release drug payload.

Trigger type and references
pH change (Guo et al., 2010; Zheng et al., 2011; Nie et al., 2013, 2014; Wang et al., 2015a, 2016, Luo Z. et al., 2016; Rungrotmongkol and Poo-arporn, 2016; Min et al., 2017; Wang Y. et al., 2017, Wang Z. et al., 2017; Wolski et al., 2017b, 2018; Quan et al., 2017; Gao et al., 2019; Wu W. et al., 2019; Wu Z. et al., 2019; Maleki et al., 2020)
Optical (Lajunen et al., 2016, 2018; Massiot et al., 2017)
Magnetic (Panczyk et al., 2013; Yang C. et al., 2020; Zhang X. et al., 2020)
Thermal (Dhawan et al., 2004; Pérez-Sánchez et al., 2020)