An unprecedented roll-off ratio in high-performing red TADF OLED emitters featuring 2,3-indole-annulated naphthalene imide and auxiliary donors.
Grzelak, Magdalena; Kumar, Dharmendra; Kochman, Michał Andrzej; Morawiak, Maja; Wiosna-Sałyga, Gabriela; Kubas, Adam; Data, Przemysław; Lindner, Marcin; Chemical science 15 (2024) 8404–8413; doi:10.1039/d4sc01391c

data_1571528
_publ_section_title
;
 An unprecedented roll-off ratio in high-performing red TADF OLED emitters
 featuring 2,3-indole-annulated naphthalene imide and auxiliary donors.
;
_journal_issue                   22
_journal_name_full               'Chemical science'
_journal_page_first              8404
_journal_page_last               8413
_journal_paper_doi               10.1039/d4sc01391c
_journal_volume                  15
_journal_year                    2024
_chemical_formula_moiety         'C31 H27 Br N2 O2'
_chemical_formula_sum            'C31 H27 Br N2 O2'
_chemical_formula_weight         539.45
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2023-08-25 deposited with the CCDC.	2024-04-30 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 105.563(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.7396(4)
_cell_length_b                   26.8784(14)
_cell_length_c                   12.5740(6)
_cell_measurement_reflns_used    3678
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      68.30
_cell_measurement_theta_min      3.29
_cell_volume                     2519.8(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0604
_diffrn_reflns_av_unetI/netI     0.0416
_diffrn_reflns_Laue_measured_fraction_full 0.988
_diffrn_reflns_Laue_measured_fraction_max 0.985
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            26987
_diffrn_reflns_point_group_measured_fraction_full 0.988
_diffrn_reflns_point_group_measured_fraction_max 0.985
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.304
_diffrn_reflns_theta_min         3.288
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    2.470
_exptl_absorpt_correction_T_max  0.7020
_exptl_absorpt_correction_T_min  0.5380
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.287
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.154
_refine_diff_density_max         0.581
_refine_diff_density_min         -0.879
_refine_diff_density_rms         0.106
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.096
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     353
_refine_ls_number_reflns         4557
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.096
_refine_ls_R_factor_all          0.0944
_refine_ls_R_factor_gt           0.0757
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1313P)^2^+4.4704P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2273
_refine_ls_wR_factor_ref         0.2416
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3678
_reflns_number_total             4557
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc01391c2.cif
_cod_data_source_block           MMG0147_10B_A_0m
_cod_depositor_comments
'Adding full bibliography for 1571528--1571532.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1571528
_shelx_estimated_absorpt_t_min   0.535
_shelx_estimated_absorpt_t_max   0.702
_shelxl_version_number           2014-3
_shelx_res_checksum              45348