Hence, the application of the dendronization strategy holds the potential to convert TADF into efficient intrinsic RTP by enhancing both the kISC and kp achieved through the modulation of triplet energy levels and characteristics. To investigate the universality of this strategy, we conducted calculations on the excited states of various systems, including conjugated dendrimers TCBPAc and TCBPTZ, nonconjugated dendrimers HCBPAc and HCBPTZ, as well as TADF molecules BPAc and BPTZ (Supplementary Figs. 19-25). Our findings revealed that dendronization also leads to an increase in the ISC pathways, 𝜇 𝑇 1 →𝑆 0 , and SOC between T1 and S1/S0 states.