Steric Switching for Thermally Activated Delayed Fluorescence by Controlling the Dihedral Angles between Donor and Acceptor in Organoboron Emitters.
Wu, Tien-Lin; Lo, Shih-Han; Chang, Yu-Che; Huang, Min-Jie; Cheng, Chien-Hong; ACS applied materials & interfaces 11 (2019) 10768–10776; doi:10.1021/acsami.8b21568

data_4514594
_publ_section_title
;
 Steric Switching for Thermally Activated Delayed Fluorescence by
 Controlling the Dihedral Angles between Donor and Acceptor in Organoboron
 Emitters.
;
_journal_issue                   11
_journal_name_full               'ACS applied materials &amp; interfaces'
_journal_page_first              10768
_journal_page_last               10776
_journal_paper_doi               10.1021/acsami.8b21568
_journal_volume                  11
_journal_year                    2019
_chemical_formula_moiety         'C57 H50 B N3'
_chemical_formula_sum            'C57 H50 B N3'
_chemical_formula_weight         787.81
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.757(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   42.226(7)
_cell_length_b                   10.2992(18)
_cell_length_c                   21.399(4)
_cell_measurement_reflns_used    7831
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      23.646
_cell_measurement_theta_min      2.417
_cell_volume                     8999(3)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'D8 Venture'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0793
_diffrn_reflns_av_sigmaI/netI    0.0787
_diffrn_reflns_limit_h_max       49
_diffrn_reflns_limit_h_min       -50
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            30444
_diffrn_reflns_theta_full        25.06
_diffrn_reflns_theta_max         25.06
_diffrn_reflns_theta_min         2.21
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  0.9973
_exptl_absorpt_correction_T_min  0.9848
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3344
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.197
_refine_diff_density_min         -0.247
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     547
_refine_ls_number_reflns         7913
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.1486
_refine_ls_R_factor_gt           0.0611
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0863P)^2^+2.0665P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1417
_refine_ls_wR_factor_ref         0.1940
_reflns_number_gt                3939
_reflns_number_total             7913
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            am8b21568_si_002.cif
_cod_data_source_block           d19112
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4514594