Molecular anchors in the solid state: Restriction of intramolecular rotation boosts emission efficiency of luminogen aggregates to unity
Zhao, Zujin; Lu, Ping; Lam, Jacky W. Y.; Wang, Zhiming; Chan, Carrie Y. K.; Sung, Herman H. Y.; Williams, Ian D.; Ma, Yuguang; Tang, Ben Zhong; Chemical Science 2 (2011) 672–; doi:10.1039/c0sc00521e

data_1515466
_publ_section_title
;
 Molecular anchors in the solid state: Restriction of intramolecular
 rotation boosts emission efficiency of luminogen aggregates to unity
;
_journal_issue                   4
_journal_name_full               'Chemical Science'
_journal_page_first              672
_journal_paper_doi               10.1039/c0sc00521e
_journal_volume                  2
_journal_year                    2011
_chemical_formula_sum            'C40 H28'
_chemical_formula_weight         508.62
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 94.720(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.2911(10)
_cell_length_b                   9.0613(5)
_cell_length_c                   18.1015(10)
_cell_measurement_reflns_used    1398
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      71.47
_cell_measurement_theta_min      2.44
_cell_volume                     2826.5(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.901
_diffrn_measured_fraction_theta_max 0.899
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.1003
_diffrn_reflns_av_sigmaI/netI    0.1951
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            7739
_diffrn_reflns_theta_full        66.50
_diffrn_reflns_theta_max         67.47
_diffrn_reflns_theta_min         4.90
_exptl_absorpt_coefficient_mu    0.511
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.79
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1072
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.205
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     356
_refine_ls_number_reflns         4572
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.1703
_refine_ls_R_factor_gt           0.0785
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
; calc
[0.00000+1.00000exp(1.20(sin\q/\l)^2^)]/
[\s^2^(Fo^2^)+0.0000+0.0000*P+(0.0130P)^2^+0.0000sin\q/\l]
where P = 0.33333Fo^2^ + 0.66667Fc^2^
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0949
_refine_ls_wR_factor_ref         0.1090
_reflns_number_gt                1840
_reflns_number_total             4572
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0sc00521e.txt
_cod_data_source_block           zhao31
_cod_depositor_comments
;
The following automatic conversions were performed:

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

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1515466