Highly efficient blue thermally activated delayed fluorescent OLEDs with record-low driving voltages utilizing high triplet energy hosts with small singlet–triplet splittings
Zhang, Dongdong; Cai, Minghan; Bin, Zhengyang; Zhang, Yunge; Zhang, Deqiang; Duan, Lian; Chem. Sci. 7 (2016) 3355–; doi:10.1039/C5SC04755B

data_1542429
_publ_section_title
;
 Highly efficient blue thermally activated delayed fluorescent OLEDs with
 record-low driving voltages utilizing high triplet energy hosts with
 small singlet--triplet splittings
;
_journal_issue                   5
_journal_name_full               'Chem. Sci.'
_journal_page_first              3355
_journal_paper_doi               10.1039/C5SC04755B
_journal_volume                  7
_journal_year                    2016
_chemical_formula_moiety         'C31 H19 N3'
_chemical_formula_sum            'C31 H19 N3'
_chemical_formula_weight         433.49
_chemical_name_systematic        3,5-2CzBN
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-12-08 deposited with the CCDC.
2016-02-12 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 97.142(4)
_cell_angle_gamma                90.00
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_cell_length_b                   13.264(2)
_cell_length_c                   18.172(3)
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_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      20.37
_cell_measurement_theta_min      2.38
_cell_volume                     2196.4(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0534
_diffrn_reflns_av_sigmaI/netI    0.0716
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_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            15026
_diffrn_reflns_theta_full        28.00
_diffrn_reflns_theta_max         28.00
_diffrn_reflns_theta_min         2.26
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.876
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SMART'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.151
_refine_diff_density_min         -0.141
_refine_diff_density_rms         0.031
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         5283
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.1232
_refine_ls_R_factor_gt           0.0584
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0010P)^2^+0.2000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0888
_refine_ls_wR_factor_ref         0.1029
_reflns_number_gt                2805
_reflns_number_total             5283
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5sc04755b2.cif
_cod_data_source_block           czbn
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 1542427--1542429.cif.
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1542429