Abstract
While heteroatom doping serves as a powerful strategy for devising novel polycyclic aromatic hydro-carbons(PAHs),the further fine-tuning of optoelectronic properties via the precisely altering of doping patterns remains a challenge.Herein,by changing the doping positions of heteroatoms in a diindenopy-rene skeleton,we report two isomeric boron,sulfur-embedded PAHs,named Anti-B2S2 and Syn-B2S2,as electron transporting semiconductors.Detailed structure-property relationship studies revealed that the varied heteroatom positions not only change their physicochemical properties,but also largely affect their solid-state packing modes and Lewis base-triggered photophysical responses.With their low-lying fron-tier molecular orbital levels,n-type characteristics with electron mobilities up to 1.5 × 10-3 cm2 V-1 s-1 were achieved in solution-processed organic field-effect transistors.Our work revealed the critical role of controlling heteroatom doping patterns for designing advanced PAHs.
基金项目
国家自然科学基金(22375059)
国家自然科学基金(22005133)
国家自然科学基金(51922039)
国家自然科学基金(52273174)
深圳市科技计划(RCJC20200714114434015)
Science and Technology Inno-vation Program of Hunan Province(2020RC5033)
国家重点研发计划(2020YFC1807302)
NETL
NSTL
万方数据