We　have　designed　and　prepared　a　novel　benzimidazole-based　fluorescent　molecule　through　the　construction　of　chlorine　bridges.　The　structure　of　the　molecule　was　authenticated　by　means　of　X-ray　crystallography　and　its　photophysical　properties　(absorption　and　fluorescence　spectra)　were　investigated.　Furthermore,　the　fluorescence　emission　of　the　molecule　was　rationalized　through　density　functional　theory　calculations,　which　showed　the　influence　of　the　bridging　chlorine　atoms　on　the　energy　levels　and　energy　gap.