Reversible thermo-stimulus solid-state fluorescence-colour/on-off switching and uses as sensitive fluorescent thermometers in different temperature ranges
Qiuhua Zhu; Weijie Yang; Sichao Zheng; Herman H. Y. Sung; Ian D. Williams; Shuwen Liu; Ben Zhong Tang; Journal of Materials Chemistry C 4 (2016) 7383–7386; doi:10.1039/C6TC01887D

data_7234904
_publ_section_title
;
 Reversible thermo-stimulus solid-state fluorescence-colour/on-off
 switching and uses as sensitive fluorescent thermometers in different
 temperature ranges
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              7383
_journal_page_last               7386
_journal_paper_doi               10.1039/C6TC01887D
_journal_volume                  4
_journal_year                    2016
_chemical_formula_sum            'C28 H28 N2 O4'
_chemical_formula_weight         456.52
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 110.134(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.65524(16)
_cell_length_b                   26.2814(3)
_cell_length_c                   9.90428(18)
_cell_measurement_reflns_used    327
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      67
_cell_measurement_theta_min      5.05
_cell_volume                     2359.66(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0229
_diffrn_reflns_av_sigmaI/netI    0.0228
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            12628
_diffrn_reflns_theta_full        67.00
_diffrn_reflns_theta_max         67.00
_diffrn_reflns_theta_min         5.05
_exptl_absorpt_coefficient_mu    0.695
_exptl_absorpt_correction_T_max  0.8852
_exptl_absorpt_correction_T_min  0.8622
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.285
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             968
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.188
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     327
_refine_ls_number_reflns         4205
_refine_ls_number_restraints     54
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0424
_refine_ls_R_factor_gt           0.0356
_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 w=1/[\s^2^(Fo^2^)+(0.0451P)^2^+0.4657P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0874
_refine_ls_wR_factor_ref         0.0912
_reflns_number_gt                3638
_reflns_number_total             4205
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            J-Mater-Chem-C-2016-4-7383.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the built-in table derived from the
CIF Core dictionary named 'cif_core.dic' version 2.4.5 last updated
on 2014-11-21.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7234904