You will be shown an abstract from a materials science research paper. Your task is to extract all synthesis operations described in the abstract into a structured JSON format. Your output should be a JSON array. Each entry in the array should be a JSON object describing a single synthesis operation. This object should have the following fields:

- "trigger": A verbal predicate indicating a synthesis operation. This should be a string extracted directly from the abstract.
- "arguments": An array of arguments specifying aspects of the synthesis operation. Each entry in the array should be a length-2 array formatted as [<argument_text>, <argument_type>]. The `argument_text` should be a string extracted directly from the abstract. The `argument_type` should be one of the following types: ["Recipe_Precursor", "Atmospheric_Material", "Participant_Material", "Recipe_Target", "Solvent_Material"].

For instance, suppose an excerpt from the abstract reads:

Tetraethoxysilane (TEOS, 98%) and cetyltrimethylammonium bromide (CTAB, 98%) were purchased from Fluka. The MTTZ-siloxy derivative (triethoxysilyl-propyl-5-mercapto-1-methyl-tetrazole) was synthesized as previously described [38].

This excerpt includes two operations, which could be annotated as follows.

[{"arguments": [["Tetraethoxysilane", "Recipe_Precursor"], ["cetyltrimethylammonium bromide", "Recipe_Precursor"]], "trigger": "purchased"}, {"arguments": [["MTTZ-siloxy derivative", "Recipe_Target"]], "trigger": "synthesized"}]

In your response, please include the JSON and no other text.

Abstract:
10.1016/j.poly.2011.06.009
Photoinduced electron transfer in pentacoordinated complex of zinc tetraphenylporphyrin and isoquinoline N-oxide. Crystal structure, spectroscopy and DFT studies
Tetraphenylporphine (TPP) was prepared from pyrrole and benzaldehyde in boiling propionic acid [22]. Pyrrole was obtained by the known method [23] using the thermal decomposition of diammonium salt of mucic acid which was prepared from mucic acid and NH4OH. Mucic acid was synthesized by galactose oxidation with HNO3 upon heating [24].
Zn-tetraphenylporphine (Zn-TPP) was synthesized according to known procedure [25] with some changes. Tetraphenylporphine (TPP) in CHCl3 was kept over PbO2 during 2 days to remove admixture of tetraphenylchlorine (2-10% of which can be formed at TPP synthesis) and a radical of unknown structure [26]. A mixture of 0.5 g (0.813 mmol) TPP, 0.25 g (1.14 mmol, 1.4-fold excess) of (CH3COO)2Zn*2H2O, 50 mL of chloroform and 250 mL of glacial acetic acid was boiled for 1 h (using of 7-fold excess of (CH3COO)2Zn leads to the final substance almost without the initial TPP). The resultant dark blue crystals of Zn-TPP were washed with acetic acid. Then the substance was chromatographed on an alumina column with chloroform. TLC was used (Silufol, chloroform-hexane 2:1) for Zn-TPP purity determination. Yield 0.43 g (77%).
To 34 mg (0.05 mM) of Zn-TPP dissolved in 15 mL of acetone, 1 mL of an acetone solution of isoquinoline N-oxide (7.3 mg, 0.05 mM) was added. The red-violet crystals appeared in 30 min, which were washed with acetone (1 mL, 2 times) and air dried. Yield 70% (29 mg).
[{"arguments": [["benzaldehyde", "Recipe_Precursor"], ["propionic acid", "Solvent_Material"], ["pyrrole", "Recipe_Precursor"], ["Tetraphenylporphine", "Recipe_Target"]], "trigger": "prepared"}, {"arguments": [["Pyrrole", "Recipe_Precursor"]], "trigger": "obtained"}, {"arguments": [["mucic acid", "Recipe_Precursor"]], "trigger": "thermal decomposition"}, {"arguments": [["mucic acid", "Recipe_Precursor"], ["NH4OH", "Recipe_Precursor"]], "trigger": "prepared"}, {"arguments": [["Mucic acid", "Recipe_Precursor"]], "trigger": "synthesized"}, {"arguments": [["HNO3", "Recipe_Precursor"]], "trigger": "galactose oxidation"}, {"arguments": [["Zn-tetraphenylporphine", "Recipe_Target"]], "trigger": "synthesized"}, {"arguments": [["Tetraphenylporphine", "Participant_Material"], ["CHCl3", "Solvent_Material"], ["PbO2", "Participant_Material"]], "trigger": "kept"}, {"arguments": [["tetraphenylchlorine", "Participant_Material"]], "trigger": "remove"}, {"arguments": [["TPP", "Participant_Material"]], "trigger": "formed"}, {"arguments": [["acetic acid", "Recipe_Precursor"], ["TPP", "Recipe_Precursor"], ["(CH3COO)2Zn*2H2O", "Recipe_Precursor"], ["chloroform", "Recipe_Precursor"]], "trigger": "boiled"}, {"arguments": [["acetic acid", "Participant_Material"], ["Zn-TPP", "Recipe_Target"]], "trigger": "washed"}, {"arguments": [["substance", "Participant_Material"], ["chloroform", "Participant_Material"]], "trigger": "chromatographed"}, {"arguments": [["Zn-TPP", "Recipe_Target"]], "trigger": "used"}, {"arguments": [["Zn-TPP", "Participant_Material"], ["acetone", "Solvent_Material"]], "trigger": "dissolved"}, {"arguments": [["crystals", "Participant_Material"]], "trigger": "appeared"}, {"arguments": [["acetone", "Participant_Material"]], "trigger": "washed"}, {"arguments": [["air", "Atmospheric_Material"]], "trigger": "dried"}, {"arguments": [["isoquinoline N-oxide", "Recipe_Precursor"]], "trigger": "added"}]