Dichloromethane

N-(tert-Butoxycarbonyl)-ʟ-glutamic acid (Boc-ʟ-Glu) and 4-nitrocinnamic acid (4-NCA) were purchased from TCI. 1-Octadecylamine was bought from Alfa Aesar. 1-Hydroxybenzotriazole (HOBt) was purchased from dams-beta. Trans-2-nitrocinnamic acid (2-NCA), trans-3-nitrocinnamic acid (3-NCA) and (N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (EDC·HCl) were purchased from J&K. Dichloromethane, sodium bicarbonate (NaHCO₃) and hydrochloric (HCl) and were supplied by Beijing Chemical Regent Company (China). Ethanol, N,N-dimethylformamide and tetrahydrofuran were bought from Xilong Scientific. Milli-Q water (18.2 MΩ·cm) was used in all cases. All the chemicals and solvents were bought from commercial suppliers and used without further purification.

DSPE-mPEG₂₀₀₀-NH₂ was provided by Shanghai ToYong Bio. Tech. Inc. (Shanghai, China). Boc-γ-Glu (OtBu)-Cys (Trt)-Gly [Boc-γ-GSH] was from Nanjing TG peptide Biotechnology Co., LTD (Nanjing, China). Paclitaxel (PTX) was bought from Jiangsu Aikang Biomedical Research and Development Co. Ltd. (Nanjing, China). Trifluoroacetic acid (TFA) was purchased from Shanghai Macklin Biochemical Co., Ltd. (Shanghai, China). Dichloromethane (super dry solvent, with molecular sieves, water ≤ 30 ppm) was bought from J&K Scientific, Inc. (Beijing, China). Triisopropylsilane (97.5%) (Tis) was provided by J&K Scientific, Inc. (Beijing, China). 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDCI) was from Meryer (Shanghai) Chemical Technology Co., Ltd. (Shanghai, China). N-Hydroxy succinimide (NHS) was purchased from Shanghai Yuanye Bio-Technology Co., Ltd. (Shanghai, China). DiR iodide [1-1-dioctadecyl-3,3,3,3-tetramethlindotricarboc-yanine iodide] (DiR) was purchased from AAT BioQuest (Sunnyvale, CA, USA). Acetonitrile (HPLC grade) was from Fisher Scientific (Pittsburgh, PA, USA). Paclitaxel injection (PTX injection) was obtained from Beijing Union Pharmaceutical Factory (Beijing, China). Deionized water was used during the experiments.

Materials.Lead iodide (PbI₂ > 99.99%), Phenethylamine iodide (PEAI > 99.5%), were purchased from p-LED. Dichloromethane (DCM > 99.9%), Butyrolactone (GBL > 99.9%) were purchased from J&K Scientific. All the materials were used as received without further purification.
Synthesis of (PEA)₂PbI_4. The PbI₂ (2.305 g) and PEAI (2.480 g) was mixed in GBL (5 mL) by stirring at 50 °C for 2 h to produce a clear solution. The molar ratio for PbI₂: PEAI is 1:2. The solution was transferred to a small vial by the syringe with a molecular sieve, and then the small vial was placed into a larger container with methylene chloride (10 mL) as an anti-solvent. The larger container was sealed and allowed to stand at room temperature for 48 h. The Dichloromethane volatilized into the perovskite solution, and crystals were precipitated.
Device Characterization. All electrical characterizations of devices were carried out using a Keithley 2602 source meter in ambient conditions. For photocurrent measurement, the devices were illuminated with a fiber-coupled 532 nm and 460 nm laser, equipped with a focusing light system. The illumination power was measured by an optical power meter. The photo-response measurements were conducted with the aid of a light chopper to control the light on/off state.