Based　on　10-methyl-10H-phenothiazine-5,5-dioxide　unit　as　an　acceptor　and　9,10-dihydro-9,9-dimethyl-acridine　(DMAC)　or　phenoxazine　(PXZ)　as　donors,　four　intramolecular　charge　transfer　(ICT)　compounds　were　designed　and　synthesized　by　Buchwald-Hartwig　cross　coupling　reactions.　Their　ground-state　geometries　were　optimized　with　density　functional　theory　(DFT)　at　B3LYP　level　and　vertical　transition　energies　were　calculated　using　the　optimal　Hartree-Fock　(HF)　exchange　method.　Resulting　compounds　were　characterized　by　fourier　transform　infrared　(FT-IR)　spectroscopy,　nuclear　magnetic　resonance　(NMR)　spectroscopy,　liquid　chromatography-mass　(LC-MS)　spectrometry　and　hybrid　quadrupole　time-of-flight　mass　spectrometry　(QTOF).　Their　photophysical　properties　were　systematically　investigated.　The　results　show　that　compound　2a　has　maximum　emission　wavelength　(λmax)　of　422　nm　in　toluene　and　its　oxygen-free　one　has　photoluminescence　quantum　yield　(PLQY)　of　0.367.　Theλmax　and　PLQY　for　1a　and　1b　are　455　nm,　0.083　and　511　nm,　0.098,　respectively.　Transient　photoluminescence　decay　curves　for　5　wt%　1a　and　1b　doped　in　PMMA　films　indicate　that　their　delayed　fluorescence　lifetimes　are　5.78　and　20.00　μs,　respectively.　According　to　the　time-resolved　fluorescence　and　phosphorescence　spectra　of　1a　and　1b　doped　in　PMMA　films　at　77　K,　their　energy　gaps　(ΔEST)　between　the　lowest　singlet　state　(S1)　and　the　lowest　triplet　excited　state　(T1)　are　determined　to　be　0.203　and　0.177　eV,　respectively,　which　are　consistent　with　the　theoretical　values　0.232　and　0.295　eV　calculated　with　time-dependent　density　functional　theory　(TD-DFT).　As　a　result,　1a　and　1b　are　expected　to　be　potential　thermally　activated　delayed　fluorescence　(TADF)　materials.　The　electrochemical　properties　of　the　four　compounds　in　dichloromethane　solution　were　determined　through　cyclic　voltammetry　using　TBAPF6　as　supporting　electrolyte　and　ferrocene　as　internal　standard.　The　HOMO　energy　levels　of　1a,　1b,　2a　and　2b　are　estimated　to　be　-5.369,　-5.111,　-5.412　and　-5.075　eV,　respectively.　The　thermal　properties　of　the　four　compounds　were　investigated　by　thermal　gravimetric　analysis　under　nitrogen　atmosphere　at　a　heating　rate　of　10℃·min-1　and　all　compounds　show　good　thermal　stability　with　decomposition　temperatures　above　420℃.　©　2016　Chinese　Chemical　Society　&　SIOC,　CAS.