{"product_id":"products-4czipn-cas-1416881-52-1","title":"4CzIPN (Photocatalyst) | CAS 1416881-52-1 | ≥97%","description":"\u003cdiv style=\"margin-bottom: 28px;\"\u003e\n\u003cdiv style=\"background: #002147; padding: 10px 20px; margin-bottom: 0;\"\u003e  \u003ch3 style=\"margin: 0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 0.70em; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #fff;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 0.95em; border: 1px solid #e4e8f0; border-top: none; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eCAS Number\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003e1416881-52-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eEC \/ EINECS Number\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003e863-265-9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eMDL Number\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003eMFCD27939633\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eSMILES\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0; word-break: break-all;\"\u003eC1=CC=C2C(=C1)C3=CC=CC=C3N2C4=C(C(=C(C(=C4C#N)N5C6=CC=CC=C6C7=CC=CC=C75)N8C9=CC=CC=C9C1=CC=CC=C18)N1C2=CC=CC=C2C2=CC=CC=C21)C#N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eInChI\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0; word-break: break-all;\"\u003eInChI=1S\/C56H32N6\/c57-33-43-53(59-45-25-9-1-17-35(45)36-18-2-10-26-46(36)59)44(34-58)55(61-49-29-13-5-21-39(49)40-22-6-14-30-50(40)61)56(62-51-31-15-7-23-41(51)42-24-8-16-32-52(42)62)54(43)60-47-27-11-3-19-37(47)38-20-4-12-28-48(38)60\/h1-32H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eInChIKey\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0; word-break: break-all;\"\u003ePRWATGACIORDEL-UHFFFAOYSA-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003ePubChem CID\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003e102198498\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eMolecular Formula\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003eC₅₆H₃₂N₆\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eMolecular Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003e788.89 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eSolubility\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003eInsoluble in water. Soluble in dichloromethane and chloroform; sparingly soluble in most other organic solvents.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003ePurity\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003e≥97%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003ePhysical Form\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003eYellow to greenish-yellow crystalline powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eHS Code\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003e2933.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eShelf Life\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003eRetest period: 36 months from date of manufacture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 16px; font-weight: 600; color: #002147; width: 200px; border-bottom: 1px solid #e4e8f0; background: #f7f8fb; font-size: 0.95em; vertical-align: top;\"\u003eStorage Conditions\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 16px; color: #333; border-bottom: 1px solid #e4e8f0;\"\u003eStore tightly sealed at room temperature, protected from light. Photoactive material — store in the dark; refrigeration (2-8 °C) recommended for long-term storage.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin-bottom: 28px;\"\u003e\n\u003cdiv style=\"background: #002147; padding: 10px 20px; margin-bottom: 0;\"\u003e  \u003ch3 style=\"margin: 0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 0.70em; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #fff;\"\u003eProduct Description \u0026amp; Scientific Applications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px 20px; border: 1px solid #e4e8f0; border-top: none; font-family: Georgia, 'Times New Roman', serif; font-size: 0.95em; line-height: 1.65; color: #333;\"\u003e\n\u003cp\u003e\u003cstrong\u003e4CzIPN\u003c\/strong\u003e (2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile; 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene) is a metal-free organic photoredox catalyst built on a donor–acceptor architecture. Four electron-rich carbazole donors surround an electron-poor dicyanobenzene core, producing a small singlet–triplet energy gap (ΔEST \u0026lt; 0.1 eV) and thermally activated delayed fluorescence (TADF) with a long-lived emissive excited state. Under visible blue light, 4CzIPN participates in both oxidative and reductive quenching cycles, giving access to a broad redox window through its excited-state and radical-ion chemistry. A single organic chromophore can therefore replace ruthenium or iridium polypyridyl photocatalysts in many visible-light single-electron-transfer workflows. With reported photoluminescence quantum yields above 90% in suitable media and good thermal stability, 4CzIPN is a benchmark metal-free photoredox catalyst and a reference green TADF emitter, with additional use in energy-transfer and metallaphotoredox chemistry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVisible-light photoredox catalysis (single-electron transfer).\u003c\/strong\u003e Under blue-light irradiation at low catalyst loading, 4CzIPN generates open-shell intermediates by single-electron transfer. Well-documented applications include decarboxylative couplings, acylations and radical cyclisations involving carboxylic acids, α-keto acids and aldehydes, Giese-type additions to electron-poor alkenes, and radical fluorination, trifluoromethylation and trifluoromethoxylation. The broad redox profile supports both oxidative and reductive quenching cycles in common polar organic solvents.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMetallaphotoredox (dual) catalysis.\u003c\/strong\u003e 4CzIPN is most strongly established in nickel dual-catalytic cross-coupling, where the photocatalyst supports radical generation and turnover of organometallic intermediates for C–C and C–heteroatom bond formation. It has also been used with copper and palladium co-catalysts for related radical and C–H functionalisation chemistry. Combined with cobaloxime catalysts it can sensitise hydrogen-evolution and dehydrogenative transformations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnergy-transfer photocatalysis.\u003c\/strong\u003e 4CzIPN can act as a triplet sensitiser, driving reactions through energy transfer rather than electron transfer, including reported [2+2] cycloadditions, E\/Z isomerisations and sensitisation of substrates that resist direct single-electron pathways.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTADF emitter and optoelectronic materials.\u003c\/strong\u003e As a donor–acceptor molecule with a small singlet–triplet gap and efficient reverse intersystem crossing, 4CzIPN is a reference green thermally activated delayed fluorescence emitter, studied as emissive and host material in organic light-emitting diode (OLED) research.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFurther applications.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrochemiluminescence (ECL):\u003c\/strong\u003e emissive TADF luminophore for annihilation- and co-reactant ECL, including aqueous ECL systems after polymer encapsulation, relevant to sensing-oriented ECL materials research.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriplet–triplet annihilation upconversion (TTA-UC):\u003c\/strong\u003e heavy-atom-free triplet sensitiser that, paired with an annihilator such as pyrene, converts lower-energy visible light into higher-energy emission, including visible-to-UV upconversion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePhotophysical and electrochemical reference data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGround-state potentials (vs SCE): E(PC•+\/PC) ≈ +1.49 V; E(PC\/PC•−) ≈ −1.24 V. Excited-state potentials (vs SCE): E(PC*\/PC•−) ≈ +1.35 to +1.43 V, corresponding to photo-oxidising ability; E(PC•+\/PC*) ≈ −1.18 V, corresponding to photo-reducing ability. Reported values vary with solvent and measurement method. Singlet–triplet gap ΔEST ≈ 0.08 eV; green emission λem ≈ 507 nm; photoluminescence quantum yield above 90% in degassed toluene.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin-bottom: 28px;\"\u003e\n\u003cdiv style=\"background: #002147; padding: 10px 20px; margin-bottom: 0;\"\u003e  \u003ch3 style=\"margin: 0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 0.70em; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #fff;\"\u003eShipping Destinations\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e4e8f0; border-top: none; padding: 12px 16px; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 0.95em;\"\u003e\u003cul style=\"margin: 0; padding: 0; list-style: none;\"\u003e\n\u003cli style=\"padding: 5px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"display: inline-block; width: 7px; height: 7px; background: #002147; border-radius: 50%; margin-right: 10px; vertical-align: middle;\"\u003e\u003c\/span\u003eEU \u0026amp; UK: Priority delivery, 2–5 business days.\u003c\/li\u003e\n\u003cli style=\"padding: 5px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"display: inline-block; width: 7px; height: 7px; background: #002147; border-radius: 50%; margin-right: 10px; vertical-align: middle;\"\u003e\u003c\/span\u003eUnited States (DDP): 3–7 business days, duties and taxes prepaid.\u003c\/li\u003e\n\u003cli style=\"padding: 5px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"display: inline-block; width: 7px; height: 7px; background: #002147; border-radius: 50%; margin-right: 10px; vertical-align: middle;\"\u003e\u003c\/span\u003eEFTA Countries (DDP): 3–7 business days, duties and taxes prepaid.\u003c\/li\u003e\n\u003cli style=\"padding: 5px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cspan style=\"display: inline-block; width: 7px; height: 7px; background: #002147; border-radius: 50%; margin-right: 10px; vertical-align: middle;\"\u003e\u003c\/span\u003eWorldwide: 7–14 business days, selected locations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"NorrChemica™","offers":[{"title":"100 mg","offer_id":53835122442577,"sku":"NOR-1416881521-100mg","price":21.9,"currency_code":"EUR","in_stock":true},{"title":"250 mg","offer_id":53835122475345,"sku":"NOR-1416881521-250mg","price":37.2,"currency_code":"EUR","in_stock":true},{"title":"1 g","offer_id":53818911293777,"sku":"NOR-1416881521-1g","price":98.2,"currency_code":"EUR","in_stock":true},{"title":"2 g","offer_id":53818911326545,"sku":"NOR-1416881521-2g","price":189.9,"currency_code":"EUR","in_stock":true},{"title":"5 g","offer_id":53818911359313,"sku":"NOR-1416881521-5g","price":349.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6357\/1793\/files\/4CzIPN_NORRCHEMICAMULTILISTING.png?v=1781398182","url":"https:\/\/www.norrchemica.com\/products\/products-4czipn-cas-1416881-52-1","provider":"NorrChemica","version":"1.0","type":"link"}