Carbon dots with high fluorescence quantum yield: the fluorescence originates from organic fluorophores.
Shi, Lei; Yang, Jian Hai; Zeng, Hai Bo; Chen, Yong Mei; Yang, Sheng Chun; Wu, Chao; Zeng, Hao; Yoshihito, Osada; Zhang, Qiqing; Nanoscale 8 (2016) 14374–14378; doi:10.1039/c6nr00451b

data_1543626
_publ_section_title
;
 Carbon dots with high fluorescence quantum yield: the fluorescence
 originates from organic fluorophores.
;
_journal_issue                   30
_journal_name_full               Nanoscale
_journal_page_first              14374
_journal_page_last               14378
_journal_paper_doi               10.1039/c6nr00451b
_journal_volume                  8
_journal_year                    2016
_chemical_formula_sum            'C8 H7 N O3 S'
_chemical_formula_weight         197.21
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                96.689(7)
_cell_angle_beta                 97.921(8)
_cell_angle_gamma                102.152(8)
_cell_formula_units_Z            8
_cell_length_a                   8.082(4)
_cell_length_b                   11.900(6)
_cell_length_c                   18.387(9)
_cell_measurement_temperature    296(2)
_cell_volume                     1692.8(15)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0249
_diffrn_reflns_av_sigmaI/netI    0.0413
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14059
_diffrn_reflns_theta_full        24.94
_diffrn_reflns_theta_max         24.94
_diffrn_reflns_theta_min         1.13
_exptl_absorpt_coefficient_mu    0.352
_exptl_absorpt_correction_T_max  0.515
_exptl_absorpt_correction_T_min  0.300
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.548
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             816
_refine_diff_density_max         0.343
_refine_diff_density_min         -0.269
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     473
_refine_ls_number_reflns         5784
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0813
_refine_ls_R_factor_gt           0.0444
_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^)+(0.0486P)^2^+0.6166P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0962
_refine_ls_wR_factor_ref         0.1128
_reflns_number_gt                3792
_reflns_number_total             5784
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6nr00451b2.cif
_cod_data_source_block           1
_cod_depositor_comments
'Adding full bibliography for 1543626--1543627.cif.'
_cod_original_cell_volume        1692.8(14)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1543626