Electrochemiluminescence (ECL), an emission of light excited by electrochemical reactions, has drawn {attention|interest|focus|consideration} as tools across diverse fields, ranging from clinical {disease|illness} diagnosis to photo-/electro-catalysts {development|improvement}. Nonetheless, the ECL efficiency of most luminophores in aqueous {solutions|options} is low, which {significantly|considerably|substantially|drastically} hamper their broad applications; {thus|therefore|hence|as a result}, understanding the intrinsic {factors|elements|aspects|variables|components|things} for ECL efficiency is {highly|extremely|very|hugely} envisioned. Herein, taking emerging carbon nitride (CN) with {unique|distinctive|special|exclusive|exceptional|one of a kind} electronic structures and rigid 2D backbone as a model luminophore, we report that the orbital delocalization was a promising unifying {factor|aspect|element|issue} for its ECL efficiency. Behind the {complicated|complex|difficult} transformation of molecular structures {regarding|concerning|relating to|with regards to} cyano-terminal groups and triazine/heptazine basal frameworks, the orbital delocalization {of the|from the|in the|on the|with the|of your} as-prepared CN was {found|discovered|identified|located} {to be|to become} {generally|usually|typically|normally|commonly|frequently} {improved|enhanced} at an elevated condensation temperature. Such intrinsic evolution in electronic structure favored the electron injection in excitation and photon emission afterward in ECL of CN. {As a result|Consequently|Because of this}, the cathodic ECL efficiency of CN was remarkably {improved|enhanced} to {a new|a brand new} milestone of 170-fold {greater|higher} than benchmark Ru(bpy)3Cl2. 6-Formylnicotinonitrile structure 1083246-26-7 supplier PMID:23291014
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