Everything about N4

🧭 Start here: a 6-step reading path

1. Read the overview: N4A 5-minute orientation
2. Skim a recent paper: Long-range interactions driving neighboring Fe–N4 sites in Fenton-like reactions for sustainable water decontaminationInfluential work since 2022
3. Pick up a classic book: Nicomachean EthicsThe most-reprinted book on the subject
4. Read the landmark paper: Edge-Site Engineering of Atomically Dispersed Fe–N4 by Selective C–N Bond Cleavage for Enhanced Oxygen Reduction Reaction ActivitiesCited 810 times
5. Go sideways: N3A closely related topic
6. Go sideways: N7A closely related topic

🏆 Landmark papers (most cited)

• Edge-Site Engineering of Atomically Dispersed Fe–N4 by Selective C–N Bond Cleavage for Enhanced Oxygen Reduction Reaction Activities

  Rui Jiang, Li Li, Tian Sheng · 2018 · Journal of the American Chemical Society · 810 citations

• Chemical vapour deposition of Fe–N–C oxygen reduction catalysts with full utilization of dense Fe–N4 sites

  Li Jiao, Jingkun Li, Lynne LaRochelle Richard · 2021 · Nature Materials · 718 citations

• A pyridinic Fe-N4 macrocycle models the active sites in Fe/N-doped carbon electrocatalysts

  Travis Marshall-Roth, Nicole J. Libretto, Alexandra T. Wrobel · 2020 · Nature Communications · 571 citations

• Electronic Structure Engineering of Single‐Atom Ru Sites via Co–N4 Sites for Bifunctional pH‐Universal Water Splitting

  Chengli Rong, Xiangjian Shen, Yuan Wang · 2022 · Advanced Materials · 515 citations

• Atomically dispersed Pt–N4 sites as efficient and selective electrocatalysts for the chlorine evolution reaction

  Taejung Lim, Gwan Yeong Jung, Jae Hyung Kim · 2020 · Nature Communications · 325 citations

• A laboratory study of the reactions of N+, N2+, N3+, N4+, O+, O2+, and NO+ ions with several molecules at 300 K

  D. Smith, N. G. Adams, T. M. Miller · 1978 · The Journal of Chemical Physics · 299 citations

• Human NAT10 Is an ATP-dependent RNA Acetyltransferase Responsible for N4-Acetylcytidine Formation in 18 S Ribosomal RNA (rRNA)

  Satoshi Ito, Sayuri Horikawa, Tateki Suzuki · 2014 · Journal of Biological Chemistry · 292 citations

• Boosting defective carbon by anchoring well-defined atomically dispersed metal-N4 sites for ORR, OER, and Zn-air batteries

  Wenzheng Cheng, Pengfei Yuan, Zirui Lv · 2020 · Applied Catalysis B: Environmental · 277 citations

🆕 Influential since 2022

• Long-range interactions driving neighboring Fe–N4 sites in Fenton-like reactions for sustainable water decontamination

  Zelin Wu, Zhaokun Xiong, Bingkun Huang · 2024 · Nature Communications · 220 citations

• Robust Fe-N4-C6O2 single atom sites for efficient PMS activation and enhanced FeIV = O reactivity

  Tiantian Chen, Ganbing Zhang, Hongwei Sun · 2025 · Nature Communications · 190 citations

• N‐acetyltransferase 10 promotes colon cancer progression by inhibiting ferroptosis through N4‐acetylation and stabilization of ferroptosis suppressor protein 1 (FSP1) mRNA

  Xiao Zheng, Qi Wang, You Zhou · 2022 · Cancer Communications · 189 citations

• Self-carbon-thermal-reduction strategy for boosting the Fenton-like activity of single Fe-N4 sites by carbon-defect engineering

  Shengjie Wei, Yibing Sun, Yun-Ze Qiu · 2023 · Nature Communications · 180 citations

• CoNi nanoalloy-Co-N4 composite active sites embedded in hierarchical porous carbon as bi-functional catalysts for flexible Zn-air battery

  Yisi Liu, Zhicheng Chen, Zongxu Li · 2022 · Nano Energy · 180 citations

📚 Books worth reading

• Nicomachean EthicsAristotle · 1558
• Max ErnstMax Ernst, Werner Spies · 1956
• Cricket in Times SquareGeorge Selden · 1960
• The Life of NelsonRobert Southey · 1800
• The Enchanted WoodEnid Blyton · 1939
• All-of-a-Kind FamilySydney Taylor · 1951
• Canto generalPablo Neruda · 1943
• Getting to yesRoger Drummer Fisher, Bruce Patton · 1981

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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