Purity | Size | Price | VIP Price | USA Stock *0-1 Day | Global Stock *5-7 Days | Quantity | ||||||
{[ item.p_purity ]} | {[ item.pr_size ]} | Inquiry |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price) ]} |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} | Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate,item.pr_is_large_size_no_price) ]} | {[ item.pr_usastock ]} | in stock Inquiry - | {[ item.pr_chinastock ]} | {[ item.pr_remark ]} in stock Inquiry - | Login | Inquiry |
Please Login or Create an Account to: See VIP prices and availability
Qing Yun Li ; Leigh Anna Hunt ; Kalpani Hirunika Wijesinghe , et al. Adv. Energy Mater.,2023,13(2):2203102. DOI: 10.1002/aenm.202203102
More
Abstract: Strong photoinduced oxidants are important to organic synthesis and solar energy conversion, to chemical fuels or electric. For these applications, visible light absorption is important to solar energy conversion and long-lived excited states are needed to drive catalysis. With respect to these desirable qualities, a series of five 5,6-dicyano[2,1,3]benzothiadiazole (DCBT) dyes are examined as organic chromophores that can serve as strong photooxidants in catalytic systems. The series utilizes a DCBT core with aryl groups on the periphery with varying electron donation strengths relative to the core. The dyes are studied via both steady-state and transient absorption and emission studies. Additionally, computational analysis, voltammetry, crystallography, and absorption spectroelectrochemistry are also used to better understand the behavior of these dyes. Ultimately, a strong photooxidant is arrived at with an exceptionally long excited state lifetime for an organic chromophore of 16 μs. The long-lived excited state photosensitizer is well-suited for use in catalysis, and visible light driven photosensitized water oxidation is demonstrated using a water-soluble photosensitizer.
Purchased from AmBeed: 54512-79-7 ; 5798-75-4 ; 328-70-1 ; 586-76-5 ; 22385-77-9 ; 3109-63-5 ; 23783-42-8 ; 3375-31-3 ; 1122-58-3 ; 479094-62-7 ; 75-98-9 ; 51364-51-3 ; 538-75-0 ; 584-08-7 ; 1122-91-4 ; 123-30-8 ; 108-88-3 ; 109-77-3 ; 64-19-7 ; 603-35-0 ...More
CAS No. : | 584-08-7 | MDL No. : | MFCD00011382 |
Formula : | K2CO3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BWHMMNNQKKPAPP-UHFFFAOYSA-L |
M.W : | 138.21 | Pubchem ID : | 11430 |
Synonyms : |
|
Chemical Name : | Potassium carbonate |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P264-P270-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330-P501 | UN#: | N/A |
Hazard Statements: | H302-H315-H319 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With sodium cyanoborohydride; benzaldehyde; acetic acid In tetrahydrofuran; methanol | 3. 4-Benzyl-2-hydroxymethylpiperazine To a cooled (0° C.) and stirred solution of Intermediate 1 (22 g, 57 mmol), acetic acid (9.7 mL, 171 mmol) and sodium cyanoborohydride (7.16 g, 114 mmol) in methanol (440 mL) was added benzaldehyde (5.8 mL, 57 mmol). The cooling bath was removed and the mixture stirred at room temperature for 3 h. Saturated K2 CO3 solution (200 mL) was added and the mixture stirred for 15 min. The solvents were evaporated and the residue partitioned between CH2 Cl2 (2*400 mL) and water (500 mL). The combined organic layers were dried (Na2 SO4) and evaporated. The residue was chromatographed on silica gel, eluding with CH2 Cl2: MeOH (95:5) to afford an inseparable mixture of 4-benzylpiperazine-2-carboxylic acid methyl ester and the corresponding ethyl ester (5.33 g, 40percent), in a 7:1 ratio respectively. To a solution of the esters (5.33 g, 22.8 mmol) in THF (200 mL) was added LiAl H4 (22.8 mL of a 1.0M solution in ether) dropwise at -10° C. Stirring was continued at -10° C. for 2.5 h. After this time saturated Na2 SO4 solution (30 mL) was added and the cooling bath removed. Stirring was continued at room temperature for 10 min then the mixture was filtered and the filtrate evaporated. The residue was chromatographed on silica gel, eluding with CH2 Cl2:MeOH:NH3 (90:8:1-->60:8:1) to afford the title compound (3.7 g, 78percent) as a colourless oil. 1 H NMR (360 MHz, CDCl3) δ 1.89-1.95 (1H, m), 2.08-2.30 (3H, m), 2.68-2.71 (2H, m), 2.86-3.04 (3H, m), 3.45-3.60 (4H, m), 7.13-7.32 (5H, m). MS (ES+) 207 (M+1). |