The Molecular Junction Database (MJD) is a free, web-based, publicly accessible resource focused on molecular-scale electronics. The MJD aims to build and maintain a comprehensive, searchable index of the field, capturing molecular structures, junction characteristics, keywords, and related metadata from relevant studies across the scientific literature.

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At present, the molecular electronics literature comprises an estimated 2,000–2,500 publications spanning experimental single-molecule conductance measurements, large-area transport studies, and theoretical investigations. The rapid growth of the field over the past two decades has made it increasingly difficult for students and researchers to identify studies relevant to ongoing projects while remaining current with the broader literature landscape. The MJD was established to help address these challenges by providing a specialized, centralized, and continuously updated search platform.

 

Currently, the database supports paper-level searching across titles, abstracts, author names, journals, publication years, DOI information, open-access status, and excluded-category filters. The MJD project also encourages paper submissions from researchers in the field, together with community feedback aimed at improving the accuracy and completeness of search results through the reporting of errors and inconsistencies. Ongoing development efforts are focused on incorporating all previously published studies in the field (Phase 1), followed by the implementation of molecular structure and substructure searching through cheminformatics webtools (Phase 2).