Abstract: Pure organic blue fluorescent materials that can efficiently utilize triplet excitons are one of the urgent requirements for organic light-emitting diodes (OLEDs). In this work, two novel blue fluorescent materials QDC and DCQDC with hot exciton channels were constructed by using quinoxaline as the acceptor and connecting two or four carbazole donors. The excited states of the molecules were successfully regulated from the charge-transfer state to hybridized local and charge transfer excited state by the carbazole units connected at the 6- and 7-positions of the quinoxaline. QDC and DCQDC exhibited blue emissions with the maximum emission peaks (λ_em) at 435 and 480 nm in toluene solution, respectively. Furthermore, DCQDC possessed a higher luminescence efficiency (93%) than that of QDC (66%). DCQDC-based doped OLED device exhibits blue emission with an electroluminescence peak (λ_EL) at 474 nm, a maximum current efficiency (CE_max) of 3.6 cd/A and a maximum external quantum efficiency (EQE_max) of 1.81%.