Journal
CHEMICAL SOCIETY REVIEWS
Volume 41, Issue 23, Pages 7857-7889Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cs35211g
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Funding
- BMRC-NMRC [10/1/21/19/642]
- MOE [MOE2011-T2-2-130]
- A*STAR IMRE [IMRE/10-1P0509]
- National University of Singapore [R-143-000-486-133]
- MOE AcRF FRC [R-143-000-444-112]
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Low band gap (E-g < 1.5 eV) polycyclic hydrocarbons have become one of the most important types of materials for many applications, for example, as semiconductors in organic field effect transistors (OFETs), as light-harvesting dyes in organic solar cells and photodetectors, as near infrared (NIR) fluorescent probes in high resolution bio-imaging and bio-sensing, and as chromophores in non-linear optics. The benzenoid polycyclic hydrocarbons as nano-sized graphene fragments also serve as perfect model compounds to understand the fundamental structure-property relationship of graphene. The ground state of these molecules can be described as either a closed-shell or an open-shell structure on the basis of their molecular size and edge structure. In this review, a summary will be given on a series of low band gap polycyclic hydrocarbons about their synthesis, physical properties and material applications.
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